<PAGE>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form 13F
Form 13F COVER PAGE
Report for the Calendar Year or Quarter Ended: March 31, 2000
Check here if Amendment |_|; Amendment Number: |_|
This Amendment (Check only one.): |_| is a restatement.
|X| adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name: Loomis Sayles & Company, L.P.
Address: One Financial Center
Boston MA 02110-2660
Form 13F File Number: 28-398
The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.
Person Signing this Report on Behalf of Reporting Manager:
Name: David Marino
Title: Trading Compliance Manager
Phone: (800) 343-2029, ext. 1195
Signature, Place, and Date of Signing:
/s/David Marino Boston MA May 8, 2000
- --------------- ---------
[Signature] [City, State] [Date]
/s/David Marino
Report Type (Check only one.):
|X| 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager
are reported in this report.)
|_| 13F NOTICE. (Check here if no holdings reported are in this report, and all
holdings are reported by other reporting manager(s).)
|_| 13F COMBINATION REPORT. (Check here if a portion of the holdings for this
reporting manager are reported in this report and a portion are reported by
other reporting manager(s).)
List of Other Managers Reporting for this Manager:
Form 13F File Number Name
28- ____________ ______________________________
<PAGE>
Form 13F SUMMARY PAGE
Report Summary:
Number of Other Included Managers: 6
Form 13F Information Table Entry Total: 1,574
Form 13F Information Table Value Total: $21,006,125
(thousands)
List of Other Included Managers:
Provide a numbered list of the name(s) and Form 13F file number(s) of all
institutional investment managers with respect to which this report is filed,
other than the manager filing this report.
No. Form 13F File Number Name
1. 28-5952 MetLife New England Holdings, Inc.
2. 28-3714 Metropolitan Life Insurance Company
3. 28-6808 Nvest Companies, L.P.
4. 28-2436 Strategic Investment Partners, Inc.
5. 28-2437 Strategic Investment Management
6. 28-2495 Strategic Investment Management, Int'l
<PAGE>
PG 1 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
AAR CORP COMMON 000361105 123 7,400 X 123 900 6,500
ADC TELECOMMUNICATIONS INC COMMON 000886101 18,482 343,045 X 123 227,770 600 114,675
AFLAC INC COMMON 001055102 1,858 40,778 X 123 24,900 15,878
AGCO CORP COMMON 001084102 1 100 X 123 100
AGL RESOURCES INC COMMON 001204106 6,674 363,200 X 123 301,700 8,400 53,100
AES CORPORATION COMMON 00130H105 9,475 120,321 X 123 58,025 6,100 56,196
AES CORP -WTS WTS 00130H113 3 22 X 123 22
AIM CONSTELLATION FUND MUT FND 001413202 66 1,432 X 123 1,432
AIM BLUE CHIP FD CL A MUT FND 001413871 80 1,437 X 123 1,437
AK STEEL HLDG CORP COMMON 001547108 20 1,900 X 123 1,900
AMFM INC COMMON 001693100 14,323 230,550 X 123 139,000 1,200 90,350
AMR CORP DEL COMMON 001765106 3,838 120,400 X 123 105,300 15,100
AT&T CORP COMMON 001957109 114,798 2,038,584 X 123 1,209,375 6,850 822,359
TELE-COM LIBERTY MEDIA GRP A COMMON 001957208 47,326 797,902 X 123 317,100 480,802
APP FIN VI CONV ZERO CPN CV BND 00202NAA3 4,800 387,504 X 123 322,920 32,292 32,292
APP FIN VII MAURITIUS 144A CVT CV BND 00202PAA8 20,779 1,544,347 X 123 1,247,246 171,014 126,087
AT&T CANADA INC COMMON 00207Q202 171 2,800 X 123 2,800
AXA FINANCIAL INC COMMON 002451102 678 18,900 X 123 17,500 1,400
ABBOTT LABS COMMON 002824100 15,565 442,338 X 123 170,978 271,360
ABERCROMBIE & FITCH CO CL A COMMON 002896207 41 2,542 X 123 142 2,400
ABGENIX INC COMMON 00339B107 14,931 108,100 X 123 79,300 8,950 19,850
ACCLAIM ENMNT INC COMMON 004325205 107 32,300 X 123 8,500 23,800
ACCREDO HEALTH INC COMMON 00437V104 16,864 509,100 X 123 463,500 45,600
ACETO CORP COMMON 004446100 34 3,745 X 123 3,745
ACNIELSON CORP COMMON 004833109 6,847 304,300 X 123 245,100 6,600 52,600
ACTEL CORP COMMON 004934105 13,108 367,300 X 123 295,400 8,500 63,400
ACTIVE VOICE CORP COMMON 004938106 418 28,800 X 123 28,800
ACX TECHNOLOGIES INC COMMON 005123104 203 49,100 X 123 49,100
ACXIOM CORP COMMON 005125109 27 800 X 123 800
ADAPTEC INC COMMON 00651F108 3,028 78,400 X 123 55,000 23,400
ADELPHIA BUSINESS SOLUTIONS COMMON 006847107 16,294 264,400 X 123 98,900 58,500 107,000
ADELPHIA COMMUNICATIONS CL A COMMON 006848105 13,813 281,900 X 123 226,200 4,800 50,900
ADOBE SYS COMMON 00724F101 22 200 X 123 200
ADVANCED DIGITAL INFO CORP COMMON 007525108 8,117 237,000 X 123 83,100 55,000 98,900
ADVANCED MARKETING SERVICES COMMON 00753T105 119 5,750 X 123 5,750
ADVANCED FIBRE COMM COMMON 00754A105 125 2,000 X 123 2,000
ADVO INC COMMON 007585102 11,590 463,600 X 123 377,800 12,200 73,600
ADVANTICA RESTAURANT GROUP COMMON 00758B109 12,562 8,374,861 X 123 7,299,922 764,762 310,177
AEROFLEX INC COMMON 007768104 27,784 561,300 X 123 518,000 43,300
ADVANCED MICRO COMMON 007903107 2,077 36,400 X 123 22,200 14,200
AEGON NV AMERICAN REG SHR COMMON 007924103 24 295 X 123 295
ADVANCED ENERGY INDS COMMON 007973100 38,587 756,600 X 123 551,400 62,800 142,400
ADVENT SOFTWARE INC COMMON 007974108 36,652 798,950 X 123 755,400 43,550
AETHER SYSTEMS INC COMMON 00808V105 1,016 5,600 X 123 5,000 600
AETNA INC COMMON 008117103 194 3,500 X 123 2,200 1,300
AETNA REAL ESTATE ASSOC COMMON 008171100 30 2,749 X 123 2,749
AFFILIATED MANAGERS GROUP COMMON 008252108 25,759 542,300 X 123 487,300 4,600 50,400
AFFYMETRIX INC COMMON 00826T108 623 4,200 X 123 4,000 200
AGILENT TECHNOLOGIES INC COMMON 00846U101 125 1,200 X 123 1,200
AIM VALUE FUND -B MUT FND 008879728 38 740 X 123 740
AIM INTL EQUITY FUND MUT FND 008882102 89 3,209 X 123 3,209
AIM INTL EQUITY FD -B MUT FND 008882508 53 1,990 X 123 1,990
AIR PRODS & CHEM COMMON 009158106 7,933 278,969 X 123 216,646 62,323
AIRGATE PCS INC COMMON 009367103 47,064 446,100 X 123 322,500 37,900 85,700
AIRONET WIRELESS COMM INC COMMON 00943A107 688 8,500 X 123 400 8,100
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 2 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
AKZO NOBEL N V SPON ADR ADR 010199305 9 200 X 123 200
ALBEMARLE CORP COMMON 012653101 830 40,000 X 123 40,000
ALBERTO CULVER CO CL A COMMON 013068200 4,729 216,200 X 123 170,200 7,200 38,800
ALBERTSONS INC COMMON 013104104 747 24,200 X 123 3,550 20,650
ALCAN ALUMINUM LTD COMMON 013716105 1,448 42,500 X 123 26,600 15,900
ALCOA INC COMMON 013817101 51,138 727,940 X 123 404,170 700 323,070
ALCATEL ALSTHOM SPON ADR ADR 013904305 53 1,222 X 123 1,222
ALICO INC COMMON 016230104 32 2,000 X 123 2,000
ALKERMES INC COMMON 01642T108 24,956 269,800 X 123 194,500 22,900 52,400
ALLEGIANCE TELECOM INC COMMON 01747T102 218 2,700 X 123 2,700
ALLERGAN INC COMMON 018490102 70 1,400 X 123 200 1,200
ALLERGAN SPECIALTY THERAPEUTIC COMMON 018494104 30 X 123 30
ALLIANCE CAPITAL MGMT HOLD COMMON 01855A101 33 800 X 123 800
ALLIANCE PREMIER GROWTH MUT FND 01877C200 19 503 X 123 503
ALLIANCE GROWTH FUND B MUT FND 01877F500 21 474 X 123 474
ALLIANCE TECHNOLOGY FUND B MUT FND 018780304 31 215 X 123 215
ALLIANT ENERGY CORP COMMON 018802108 15,795 518,940 X 123 422,940 9,200 86,800
ALLIANT TECHSYSTEMS INC COMMON 018804104 11,581 196,700 X 123 159,400 3,700 33,600
ALLIED RISER COMMUNICATIONS COMMON 019496108 13,935 401,000 X 123 153,200 88,500 159,300
ALLMERICA FINANCIAL CORP COMMON 019754100 61 1,188 X 123 1,188
ALLSCRIPTS INC COMMON 019886100 17,550 291,900 X 123 271,900 20,000
ALLSTATE CORP COMMON 020002101 54,608 2,293,255 X 123 1,303,364 2,300 987,591
ALLTEL CORP COMMON 020039103 508 8,037 X 123 1,600 6,437
ALLTRISTA CORP COMMON 020040101 12 547 X 123 547
ALTERA CORP COMMON 021441100 669 7,500 X 123 7,500
ALTERRA HEALTHCARE CORP COMMON 02146C104 52 12,900 X 123 12,900
ALZA CORP COMMON 022615108 11 300 X 123 300
AMAZON.COM INC COMMON 023135106 20 300 X 123 300
AMEREN CORPORATION COMMON 023608102 31 999 X 123 999
AMERICA ONLINE INC COMMON 02364J104 67,478 1,000,604 X 123 380,754 9,200 610,650
AMERICAN ELEC PWR COMMON 025537101 74 2,473 X 123 1,673 800
AMERICAN EXPRESS CO COMMON 025816109 8,293 55,682 X 123 17,200 38,482
AMERICAN GEN CORP COMMON 026351106 2,819 50,225 X 123 50,225
AMERICAN GREETINGS CORP CL A COMMON 026375105 15 800 X 123 800
AMERICAN HOME PRODS COMMON 026609107 17,462 324,872 X 123 141,006 3,400 180,466
AMERICAN INTL GRP COMMON 026874107 147,031 1,342,745 X 123 683,052 5,499 654,193
AMERICAN MGMT SYSTEM COMMON 027352103 7,611 173,725 X 123 95,175 78,550
AMERICAN MUTUAL FUNDS MUT FND 027681105 47 2,029 X 123 2,029
AMERICAN STATES WATER CO COMMON 029899101 8,604 289,200 X 123 239,800 6,100 43,300
AMERICAN TOWER CORP CL A COMMON 029912201 2,296 46,500 X 123 46,500
AMERICAN SUPERCONDUCTOR CORP COMMON 030111108 10,182 228,800 X 123 87,400 50,500 90,900
AMERICAN WATER WORKS INC COMMON 030411102 43 1,800 X 123 800 1,000
AMERICAN XTAL TECHNOLOGY INC COMMON 030514103 175 5,400 X 123 5,400
AMERICREDIT CORP COMMON 03060R101 10,732 657,900 X 123 551,100 15,900 90,900
AMERIKING INC COMMON 03071G102 18 1,750 X 123 1,750
AMERUS LIFE HOLDINGS INC A COMMON 030732101 535 29,500 X 123 22,700 6,800
AMES DEPT STORES INC COMMON 030789507 5 200 X 123 200
AMETEK INC COMMON 031100100 8 400 X 123 400
AMGEN INC COMMON 031162100 54,387 886,145 X 123 335,990 550,155
AMPHENOL CORP CL A COMMON 032095101 5,429 53,100 X 123 38,200 14,900
AMSOUTH BANCORP COMMON 032165102 135 9,009 X 123 9,009
ANADARKO PETE CORP COMMON 032511107 8,442 218,210 X 123 137,550 80,660
ANADIGICS INC COMMON 032515108 42,992 651,399 X 123 495,637 45,150 110,612
ANALOG DEVICES COMMON 032654105 40,178 499,105 X 123 332,105 2,500 164,500
ANAREN MICROWAVE INC COMMON 032744104 15,608 162,800 X 123 152,400 10,400
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 3 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
ANDERSONS INC COMMON 034164103 73 10,400 X 123 10,400
ANHEUSER BUSCH COMMON 035229103 78,778 1,265,516 X 123 772,135 10,100 483,281
ANICOM INC COMMON 035250109 24 4,000 X 123 4,000
ANTHRACITE CAPITAL INC COMMON 037023108 514 72,100 X 123 51,300 20,800
AON CORP COMMON 037389103 33,290 1,032,240 X 123 634,940 1,300 396,000
APACHE CORP COMMON 037411105 3,667 73,700 X 123 53,100 20,600
APARTMENT INVT & MGMT CO CL A COMMON 03748R101 8 200 X 123 200
APCO OIL CORP COMMON 037519105 2 X 123 2
APHTON CORP COMMON 03759P101 100 3,000 X 123 3,000
APPLE COMPUTER COMMON 037833100 64,429 474,395 X 123 292,805 400 181,190
APPLIED GRAPHICS TECHNOLOGIES COMMON 037937109 6 1,000 X 123 1,000
APPLIED DIGITAL SOLUTIONS COMMON 038188108 4 400 X 123 400
APPLIED MATERIALS COMMON 038222105 71,163 755,050 X 123 271,300 6,000 477,750
APPLIED POWER INC CL A COMMON 038225108 359 12,600 X 123 12,600
APPLIED MICRO CIRCUITS CORP COMMON 03822W109 23,050 153,600 X 123 116,600 37,000
APPLIED SCIENCE & TECHNOLOGY I COMMON 038236105 14,629 483,600 X 123 452,450 31,150
APROPOS TECHNOLOGY INC COMMON 038334108 13,124 354,700 X 123 343,000 11,700
APTARGROUP INC COMMON 038336103 28 1,052 X 123 1,052
ARCH CHEMICALS INC COMMON 03937R102 4 225 X 123 225
ARCHER-DANIELS-MIDLAND CO COMMON 039483102 7 700 X 123 700
ARCHSTONE COMMUNITIES TRUST COMMON 039581103 163 8,200 X 123 8,200
ARCTIC CAT INC COMMON 039670104 194 18,900 X 123 18,900
ARKANSAS BEST CONV PFD A CV PFD 040790206 15,579 1,055,070 X 123 864,593 93,969 96,509
ARROW ELECTRS COMMON 042735100 11 300 X 123 300
ARROWPOINT COMMUNICATIONS INC COMMON 042810101 1,185 10,000 X 123 9,500 500
ART TECHNOLOGY GROUP COMMON 04289L107 2,391 36,400 X 123 34,800 1,600
ARTHROCARE CORP COMMON 043136100 17,928 194,875 X 123 72,100 43,550 79,225
ASIAINFO HOLDINGS INC COMMON 04518A104 151 2,500 X 123 2,500
ASPEN TECHNOLOGY INC COMMON 045327103 19,731 488,700 X 123 235,100 81,700 171,900
ASSOCIATED BANC CORP COMMON 045487105 4,104 137,376 X 123 124,725 12,651
ASSOCIATED ESTATES REALTY CP COMMON 045604105 6,036 748,600 X 123 503,700 65,500 179,400
AT HOME CORP COMMON 045919107 7 200 X 123 200
ASSOCIATES FIRST CAPITAL COMMON 046008108 3,152 147,464 X 123 23,960 800 122,704
ATHBASCA OIL SANDS TRUST MUT FND 046903100 17 1,000 X 123 1,000
ATLANTIC RICHFIELD COMMON 048825103 49,272 579,674 X 123 393,310 4,400 181,964
ATLAS AIR INC COMMON 049164106 7,071 258,300 X 123 216,900 6,000 35,400
ATMEL CORP COMMON 049513104 3,103 60,100 X 123 59,100 1,000
ATWOOD OCEANICS INC COMMON 050095108 48,534 731,900 X 123 530,100 59,900 141,900
AURORA BIOSCIENCES CORP COMMON 051920106 10,018 245,100 X 123 182,500 19,750 42,850
AUTOLIV INC COMMON 052800109 228 7,606 X 123 2,249 5,357
AUTOMATIC DATA PROC COMMON 053015103 7,267 150,619 X 123 28,561 122,058
AUTOZONE INC COMMON 053332102 5,124 184,632 X 123 124,282 60,350
AVALONBAY COMMUNITIES INC COMMON 053484101 13,771 376,000 X 123 304,600 6,900 64,500
AVENUE A INC COMMON 053566105 5 150 X 123 150
AVERY DENNISON CORP COMMON 053611109 73 1,200 X 123 200 1,000
AVNET INC COMMON 053807103 2,709 43,000 X 123 33,600 9,400
AVON PRODS COMMON 054303102 670 22,900 X 123 7,200 15,700
AXENT TECHNOLOGIES INC COMMON 05459C108 352 18,700 X 123 15,500 3,200
BB&T CORP COMMON 054937107 17 600 X 123 600
BJ SERVICES CO COMMON 055482103 3,129 42,350 X 123 35,200 7,150
BP AMOCO PLC SPON ADR ADR 055622104 38,794 728,517 X 123 237,968 150 490,399
BMC SOFTWARE INC COMMON 055921100 591 11,978 X 123 7,718 4,260
BAKER HUGHES INC COMMON 057224107 68,059 2,249,880 X 123 1,372,580 2,400 874,900
BAKER HUGHES INC CONV ZERO NT CV BND 057224AH0 164,824 4,114,843 X 123 3,939,361 175,482
BAKER J INC COMMON 057232100 2,551 364,400 X 123 267,300 18,200 78,900
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 4 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
BALCOR PENSION INVS VII COMMON 057677700 40 X 123 40
BALL CORPORATION COMMON 058498106 190 5,500 X 123 5,500
BALTIMORE TECHNOLOGIES ADR ADR 059284109 64 445 X 123 445
BANKAMERICA CORP COMMON 060505104 3,694 70,446 X 123 27,243 43,203
BANK OF NEW YORK COMMON 064057102 17,265 415,406 X 123 322,986 92,420
BANK ONE CORP COMMON 06423A103 5,172 149,918 X 123 57,530 92,388
BANTA CORP COMMON 066821109 599 32,600 X 123 16,350 16,250
BARD C R COMMON 067383109 174 4,500 X 123 1,600 2,900
BARRICK GOLD CORP COMMON 067901108 24 1,500 X 123 1,500
BASSETT FURNITURE INDS COMMON 070203104 24 1,750 X 123 1,750
BAUSCH & LOMB COMMON 071707103 104 2,000 X 123 1,600 400
BAXTER INTL COMMON 071813109 53,424 852,230 X 123 514,550 1,200 336,480
BAY VIEW CAPITAL CORP COMMON 07262L101 62 8,200 X 123 8,200
BEA SYSTEMS INC COMMON 073325102 132 1,800 X 123 1,300 500
BEAR STEARNS COS INC COMMON 073902108 5,917 129,679 X 123 57,478 72,201
BECKMAN COULTER INC COMMON 075811109 15,835 246,700 X 123 199,200 5,400 42,100
BECKTON DICKINSON & CO COMMON 075887109 11 400 X 123 400
BED BATH & BEYOND INC COMMON 075896100 2,725 69,200 X 123 69,200
BELL ATLANTIC CORP COMMON 077853109 17,029 278,595 X 123 186,778 700 91,117
BELL ATLANTIC FIN EURO CONV BE CV BND 0778599A6 61,087 10,701,798 X 123 10,265,608 178,037 258,154
BELL SPORTS CORP CONV SUB DEB CV BND 077903AA0 6,946 146,005 X 123 119,405 22,845 3,755
BELLSOUTH CORP COMMON 079860102 208,037 4,438,118 X 123 2,425,001 47,740 1,965,377
BELLWETHER EXPLORATION CO COMMON 079895207 14 2,000 X 123 2,000
BELO A H CORP COM SER A COMMON 080555105 502 28,100 X 123 17,700 10,400
BEMIS CO COMMON 081437105 243 6,600 X 123 4,700 1,900
BEN & JERRYS HOMEMADE CL A COMMON 081465106 3 100 X 123 100
BERKSHIRE HATHAWAY INC CL A COMMON 084670108 5,720 100 X 123 100
BERKSHIRE HATHAWAY INC CL B COMMON 084670207 2,726 1,498 X 123 365 1,133
BEST BUY COMPANY COMMON 086516101 34 400 X 123 400
BESTFOODS COMMON 08658U101 1,684 35,972 X 123 18,568 17,404
BETHLEHEM STEEL CONV PFD SER B CV PFD 087509501 44,975 4,137,682 X 123 3,555,828 420,753 161,101
BEVERLY ENTERPRISES INC COMMON 087851309 65 17,600 X 123 17,600
BIOGEN INC COMMON 090597105 26,802 383,575 X 123 213,800 1,600 168,175
BIOMET INC COMMON 090613100 9,416 258,850 X 123 181,300 77,550
BIOPURE CORP COMMON 09065H105 21,034 631,400 X 123 591,050 40,350
BIOVAIL CORP INTL COMMON 09067J109 3,903 88,200 X 123 59,700 28,500
BIOMIRA INC COMMON 09161R106 20 2,000 X 123 2,000
BLACK & DECKER CORP COMMON 091797100 58,709 1,562,970 X 123 1,029,561 22,400 511,009
BLACK HILLS CORP COMMON 092113109 43 1,950 X 123 1,950
BOEING CO COMMON 097023105 46,959 1,241,900 X 123 793,540 26,050 422,310
BOISE CASCADE COMMON 097383103 268 7,700 X 123 2,200 5,500
BOLDER TECHNOLOGIES CORP COMMON 097519102 10 1,100 X 123 1,100
BONE CARE INTL COMMON 098072101 5 300 X 123 300
BORDERS GROUP INC COMMON 099709107 1,174 68,300 X 123 10,700 57,600
BOSTON PROPERTIES INC COMMON 101121101 6 200 X 123 200
BOSTON SCIENTIFIC CORP COMMON 101137107 17 800 X 123 800
BOWATER INC COMMON 102183100 12,447 233,200 X 123 162,300 70,900
BRADLEES INC WTS WTS 104499116 19 10,962 X 123 10,962
BRADY CORP CL A COMMON 104674106 94 3,000 X 123 3,000
BRANDYWINE RLTY TRUST COMMON 105368203 1,171 68,400 X 123 44,700 23,700
BREAKAWAY SOLUTIONS INC COMMON 106372105 8,081 177,600 X 123 63,400 39,600 74,600
BRIGGS & STRATTON COMMON 109043109 118 2,872 X 123 325 2,547
BRINKER INTERNATIONAL INC COMMON 109641100 377 12,700 X 123 12,700
BRISTOL MYRS SQUIBB COMMON 110122108 103,930 1,791,890 X 123 1,003,599 16,200 772,091
BRITISH TELE FINAL INSTMT ADR ADR 111021408 301 1,600 X 123 1,000 600
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 5 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
BROADBAND TECH SUB CONV NTS CV BND 111309AC4 50,097 2,156,678 X 123 1,807,835 212,753 136,090
BROADCOM CORP CL A COMMON 111320107 316 1,300 X 123 800 500
BROADWING INC COMMON 111620100 4,589 123,407 X 123 82,093 41,314
BROCADE COMMUNICATIONS SYSTEM COMMON 111621108 24,135 134,600 X 123 60,600 800 73,200
BUILDERS TRANSPORT SUB ZERO CO CV BND 120084AA6 8 253,855 X 123 183,157 22,541 48,156
BUILDERS TRANSPORT SUB DEB CV CV BND 120084AB4 11 242,172 X 123 182,569 54,304 5,298
BURLINGTON COAT FACTORY WRHS COMMON 121579106 354 20,600 X 123 4,300 16,300
BURLINGTON INDS INC COMMON 121693105 137 31,400 X 123 8,300 23,100
BURLINGTON NORTHN SANTA FE COMMON 12189T104 4,869 214,005 X 123 159,050 54,955
BURLINGTON RESOURCES INC COMMON 122014103 1,624 43,897 X 123 26,400 17,497
BURNS INTERNATIONAL SERVICES COMMON 122374101 9,938 946,500 X 123 786,800 22,700 137,000
BURR BROWN CORP COMMON 122574106 1,359 25,000 X 123 19,500 5,500
CBS CORPORATION COMMON 12490K107 112,527 1,987,230 X 123 1,003,330 25,000 958,900
C.COR.NET CORP COMMON 125010108 35,927 733,200 X 123 389,500 112,100 231,600
C-CUBE MICROSYSTEMS INC COMMON 125015107 393 5,400 X 123 300 5,100
CEC ENTERTAINMENT INC COMMON 125137109 11,953 440,650 X 123 354,500 10,950 75,200
CGM CAP DEV FD MUT FND 125322107 778 28,557 X 123 3,892 24,665
CGM REALTY FUND MUT FND 125325407 188 16,684 X 123 16,684
C.H. ROBINSON WORLDWIDE COMMON 12541W100 7 200 X 123 200
CIGNA CORP COMMON 125509109 36,393 480,430 X 123 332,955 800 146,675
CIT GROUP INC CL A COMMON 125577106 37,563 1,926,317 X 123 1,077,530 2,100 846,687
CK WITCO CORP COMMON 12562C108 462 45,325 X 123 24,850 20,475
CMG INFORMATION SERVICES INC COMMON 125750109 974 8,600 X 123 8,000 600
CML GRP INC EURO CONV 144A CV BND 125820AB6 5 316,051 X 123 285,183 28,939 1,929
CMS ENERGY CORP COMMON 125896100 98 5,400 X 123 1,425 3,975
CNA SURETY CORP COMMON 12612L108 5,915 424,400 X 123 344,900 9,500 70,000
CNF TRANSPORTATION INC COMMON 12612W104 35,594 1,282,680 X 123 874,205 24,400 384,075
CSX CORP COMMON 126408103 222 9,449 X 123 6,300 3,149
CTS CORP COMMON 126501105 13,110 230,000 X 123 190,100 5,900 34,000
CUNO INC COMMON 126583103 11,764 433,700 X 123 348,900 10,700 74,100
CVS CORP COMMON 126650100 18,554 493,950 X 123 342,950 151,000
CABLETRON SYS COMMON 126920107 162 5,500 X 123 5,500
CABOT OIL & GAS -CL A COMMON 127097103 11 600 X 123 600
CADENCE DESIGN SYS INC COMMON 127387108 5,537 268,450 X 123 211,700 56,750
CALDWELL & ORKIN MKT OPP FD MUT FND 128819307 131 6,980 X 123 6,980
CALIPER TECHNOLOGIES CORP COMMON 130876105 801 9,900 X 123 6,800 3,100
CALPINE CORP COMMON 131347106 33,558 357,000 X 123 205,025 1,200 150,775
CAMBREX CORP COMMON 132011107 6,299 144,800 X 123 107,900 5,700 31,200
CAMDEN PPTY TR CONV PFD $2.25 CV PFD 133131201 1,036 35,959 X 123 30,954 5,005
CAMPBELL SOUP COMMON 134429109 49 1,600 X 123 1,600
CANADIAN NATIONAL RAILWAY CO COMMON 136375102 27 1,024 X 123 16 1,008
CAPITAL AUTOMOTIVE REIT COMMON 139733109 796 66,300 X 123 43,600 22,700
CAPITAL ONE FINL CORP COMMON 14040H105 1,877 39,158 X 123 32,358 6,800
AMERICAN FDS CAPITAL WORLD GRW MUT FND 140543109 142 4,630 X 123 4,630
CARAUSTAR INDS INC COMMON 140909102 223 15,800 X 123 13,300 2,500
CARDINAL HEALTH INC COMMON 14149Y108 28,772 627,173 X 123 463,250 950 162,973
CAREMARK RX INC COMMON 141705103 14 X 123 14
CARLISLE COS INC COMMON 142339100 168 4,200 X 123 4,200
CARNIVAL CORP CL A COMMON 143658102 20,327 819,240 X 123 441,105 1,600 376,535
CAROLINA PWR & LT COMMON 144141108 68 2,087 X 123 2,087
CARPENTER TECHNOLOGY CORP COMMON 144285103 3 150 X 123 150
CARTER WALLACE INC COMMON 146285101 202 10,800 X 123 10,800
CARTER WALLACE INC CL B COMMON 146285200 221 13,800 X 123 13,800
CASEYS GENERAL STORES INC COMMON 147528103 4,513 415,000 X 123 293,300 23,000 98,700
CATERPILLAR COMMON 149123101 5,144 130,443 X 123 30,725 99,718
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 6 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
CELERITEK INC COMMON 150926103 14,054 222,200 X 123 208,000 14,200
CELGENE CORP COMMON 151020104 4,630 46,500 X 123 17,400 10,400 18,700
CENDANT CORP COMMON 151313103 684 36,962 X 123 1,400 35,562
CENDANT CORP CVT PFD 7.5% CV PFD 151313301 9 312 X 123 312
CENTEX CORP COMMON 152312104 36 1,500 X 123 1,500
CENTOCOR INC SUB DEB CONV CV BND 152342AE1 11,948 219,748 X 123 167,982 28,420 23,345
CENTRAL & SW COMMON 152357109 158 9,250 X 123 600 8,650
CENTURA BANKS COMMON 15640T100 5 100 X 123 100
CENTURY TELEPHONE ENTERPRISE COMMON 156700106 25,414 684,551 X 123 421,300 263,251
CERIDIAN CORP COMMON 15677T106 9,827 512,150 X 123 395,200 27,200 89,750
CERPROBE CORP COMMON 156787103 6,053 405,200 X 123 309,000 20,500 75,700
CHARLES RIVER ASSOCIATES INC COMMON 159852102 1,883 96,900 X 123 75,400 4,500 17,000
CHARTER ONE FIN INC COMMON 160903100 3,817 181,784 X 123 105,238 76,546
CHARMING SHOPPES COMMON 161133103 5,816 1,022,600 X 123 850,400 23,000 149,200
CHARTER COMMUNICATIONS INC A COMMON 16117M107 23 1,600 X 123 550 550 500
CHASE MANHATTAN CORP (NEW) COMMON 16161A108 147,184 1,688,136 X 123 824,942 7,400 855,794
CHEAP TICKETS INC COMMON 162672109 5,660 400,700 X 123 328,000 9,500 63,200
CHECKERS DRIVE IN RESTAURANT W WTS 162809115 44 X 123 44
CHEESECAKE FACTORY COMMON 163072101 21 500 X 123 500
CHEMED CORP COMMON 163596109 30 1,000 X 123 1,000
CHESAPEAKE CORP COMMON 165159104 3,533 119,500 X 123 95,600 2,600 21,300
CHESAPEAKE ENERGY CORP COMMON 165167107 9,084 2,795,100 X 123 2,392,650 150,225 252,225
CHESAPEAKE ENERGY CONV PFD 7% CV PFD 165167305 22,447 4,335,225 X 123 3,669,042 176,258 489,925
CHEVRON CORP COMMON 166751107 27,347 295,844 X 123 160,823 135,021
CHIQUITA BRANDS CONV PFD CV PFD 170032403 100 15,790 X 123 11,842 3,947
CHITTENDEN CORP COMMON 170228100 8,122 273,600 X 123 223,000 5,800 44,800
CHOICEPOINT INC COMMON 170388102 15 400 X 123 400
CHUBB CORP COMMON 171232101 23,513 348,014 X 123 230,750 500 116,764
CIBER INC COMMON 17163B102 8,087 394,500 X 123 331,900 8,900 53,700
CIENA CORP COMMON 171779101 6,874 54,500 X 123 30,700 1,100 22,700
CINCINNATI FINANCIAL CORP COMMON 172062101 56 1,500 X 123 1,500
CINERGY CORP COMMON 172474108 6 300 X 123 300
CIRCUIT CITY STORES-CIRCUIT GP COMMON 172737108 3,598 59,100 X 123 55,800 3,300
CIRRUS LOGIC INC SUB CONV 144A CV BND 172755AA8 1,545 69,161 X 123 42,322 26,838
CIRRUS LOGIC INC SUB NTS CV BND 172755AC4 67,236 3,009,422 X 123 2,637,812 325,159 46,451
CISCO SYSTEMS INC COMMON 17275R102 289,755 3,747,846 X 123 1,549,776 42,400 2,155,670
CINTAS CORP COMMON 172908105 2,122 54,150 X 123 54,150
CITIGROUP INC COMMON 172967101 257,620 4,302,633 X 123 2,396,617 11,750 1,894,266
CITIZENS BANKING COR MICH COMMON 174420109 150 7,715 X 123 11 7,704
CITIZENS UTILITIES CO CL B COMMON 177342201 28 1,700 X 123 1,700
CITRIX SYSTEMS INC COMMON 177376100 331 5,000 X 123 5,000
CITY NATIONAL CORP COMMON 178566105 15,618 463,620 X 123 376,300 8,900 78,420
CLAYTON HOMES INC COMMON 184190106 7 650 X 123 25 625
CLEAR CHANNEL COMMUNICATIONS COMMON 184502102 863 12,500 X 123 6,100 6,400
CLOROX CO COMMON 189054109 10 300 X 123 300
COASTAL CORP COMMON 190441105 71,868 1,562,358 X 123 905,135 3,100 654,123
COCA-COLA COMMON 191216100 17,408 370,867 X 123 108,150 262,717
COCA-COLA ENTERPRISES COMMON 191219104 11 500 X 123 500
COLGATE PALMOLIVE COMMON 194162103 8,457 150,020 X 123 36,158 113,862
COLONIAL BANCGROUP INC COMMON 195493309 298 27,700 X 123 5,300 22,400
COLUMBIA ENERGY GROUP COMMON 197648108 73,902 1,247,295 X 123 732,772 1,500 513,023
COLUMBIA HCA HEALTHCARE CORP COMMON 197677107 34 1,352 X 123 700 652
COMAIR HLDGS INC COMMON 199789108 277 11,800 X 123 11,800
COMCAST CORP CL A COMMON 200300101 1,844 44,700 X 123 11,900 32,800
COMCAST CORP CL A SPL COMMON 200300200 5,157 118,890 X 123 30,600 88,290
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 7 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
COMERICA INC COMMON 200340107 44,165 1,054,695 X 123 471,770 582,925
COMMERCE BANCORP INC N J COMMON 200519106 12,786 345,555 X 123 282,015 6,595 56,945
COMMERCE ONE INC COMMON 200693109 75 500 X 123 500
COMMERCIAL FEDERAL CORP COMMON 201647104 8,292 498,773 X 123 389,598 12,200 96,975
COMMSCOPE INC COMMON 203372107 7,950 174,000 X 123 151,200 22,800
COMMUNITY FIRST BANKSHARES COMMON 203902101 474 29,600 X 123 22,300 7,300
COMPAQ COMPUTER COMMON 204493100 143,169 5,302,557 X 123 3,453,280 42,125 1,807,152
COMPLETE BUSINESS SOLUTIONS COMMON 20452F107 12,295 549,500 X 123 445,900 10,400 93,200
COMPUCOM SYSTEMS INC COMMON 204780100 5 1,000 X 123 1,000
COMPUCREDIT CORP COMMON 20478N100 18 500 X 123 500
COMPUTER ASSOCIATES INTL COMMON 204912109 5,118 86,463 X 123 52,399 34,064
COMPUSA INC COMMON 204932107 175 17,400 X 123 4,400 13,000
COMPUTER SCIENCE CORP COMMON 205363104 49,353 623,735 X 123 430,255 1,000 192,480
COMPUTERIZED THERMAL IMAGING COMMON 20557C108 68 5,000 X 123 5,000
COMPUWARE CORP COMMON 205638109 67,418 3,200,835 X 123 2,070,285 6,800 1,123,750
COMVERSE TECHNOLOGY INC COMMON 205862402 2,268 12,000 X 123 6,000 900 5,100
CONAGRA INC COMMON 205887102 477 26,300 X 123 13,400 12,900
CONCENTRIC NETWORK CORP COMMON 20589R107 13,431 244,200 X 123 72,100 60,400 111,700
CONCORD EFS INC COMMON 206197105 7,552 329,262 X 123 151,200 200 177,862
CONECTIV INC COMMON 206829103 44 2,540 X 123 2,540
CONEXANT SYSTEMS INC COMMON 207142100 4,630 65,210 X 123 37,600 27,610
CONMED CORP COMMON 207410101 18,667 744,800 X 123 612,475 17,300 115,025
CONOCO INC CL A COMMON 208251306 71,307 2,895,719 X 123 1,405,485 3,100 1,487,134
CONOCO INC CL B COMMON 208251405 16,605 647,983 X 123 369,925 614 277,445
CONSECO INC COMMON 208464107 590 51,600 X 123 51,600
CONSOLIDATED EDISON INC COMMON 209115104 535 18,380 X 123 5,450 12,930
CONSOLIDATED STORES COMMON 210149100 83 7,300 X 123 7,300
CONSTELLATION ENERGY GROUP COMMON 210371100 20,338 638,067 X 123 436,580 1,000 200,487
CONTINENTAL AIRLINES CL B COMMON 210795308 12 300 X 123 300
CONVERGYS CORP COMMON 212485106 3,095 80,000 X 123 55,400 24,600
COOPER CAMERON CORP COMMON 216640102 21,153 316,300 X 123 209,600 4,800 101,900
COOPER INDS INC COMMON 216669101 14 400 X 123 400
COOPER TIRE COMMON 216831107 58 4,650 X 123 4,650
COORS (ADOLPH) CL B COMMON 217016104 3,448 71,830 X 123 52,500 19,330
COORSTEK INC COMMON 217020106 3,897 96,825 X 123 77,000 5,300 14,525
COPPER MOUNTAIN NETWORKS COMMON 217510106 787 9,600 X 123 8,400 1,200
CORDANT TECHNOLOGIES INC COMMON 218412104 1,589 28,100 X 123 19,100 9,000
CORN PRODUCTS INTERNATIONAL COMMON 219023108 10,752 446,846 X 123 366,346 11,200 69,300
CORNING INC COMMON 219350105 74,920 386,185 X 123 120,150 3,300 262,735
CORORATE EXECUTIVE BOARD CO COMMON 21988R102 9,749 192,100 X 123 74,700 38,700 78,700
CORTECH INC COMMON 22051J308 2 200 X 123 200
COST PLUS INC CALIFORNIA COMMON 221485105 19,243 569,100 X 123 527,100 42,000
COSTCO WHOLESALE CORP COMMON 22160K105 39,658 754,500 X 123 277,500 477,000
COSTAR GROUP INC COMMON 22160N109 5,089 138,000 X 123 122,100 15,900
COUNTRYWIDE CR INDS INC COMMON 222372104 21,725 797,250 X 123 743,050 34,900 19,300
COVAD COMMUNICATIONS GROUP COMMON 222814204 1,116 15,400 X 123 15,400
COVANCE INC COMMON 222816100 7,193 669,124 X 123 556,200 15,600 97,324
COX COMMUNICATIONS INC -CL A COMMON 224044107 119 2,447 X 123 2,447
CRANE CO COMMON 224399105 3,559 151,050 X 123 129,250 21,800
CRAY RESEARCH SUB DEB CONV CV BND 225224AA2 9,970 216,649 X 123 184,186 19,873 12,590
CREDENCE SYSTEMS CORP COMMON 225302108 29,192 233,300 X 123 97,300 47,600 88,400
CREE INC COMMON 225447101 48,751 431,900 X 123 319,300 38,000 74,600
CRESCENT REAL ESTATE EQUITIES COMMON 225756105 14 800 X 123 800
CRITICAL PATH INC COMMON 22674V100 1,122 13,200 X 123 13,200
CROSS TIMBERS OIL CO COMMON 227573102 810 62,000 X 123 31,400 30,600
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 8 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
CROSSROADS SYSTEMS INC COMMON 22765D100 13,908 134,700 X 123 130,200 4,500
CROWN CORK & SEAL CO INC COMMON 228255105 48 3,000 X 123 3,000
CYPRESS SEMICONDUCTOR COMMON 232806109 48,431 988,380 X 123 641,180 600 346,600
CYPRESS SEMICONDUCTOR SUB CONV CV BND 232806AE9 7,109 118,919 X 123 102,162 11,351 5,405
CYTEC INDS COMMON 232820100 16,276 531,466 X 123 439,600 11,700 80,166
CYTOGEN CORP COMMON 232824102 250 28,800 X 123 28,800
CYTYC CORP COMMON 232946103 34,311 711,100 X 123 662,000 49,100
DII GROUP INC COMMON 232949107 9 80 X 123 80
DQE INC COMMON 23329J104 9,430 207,250 X 123 97,950 150 109,150
D.R. HORTON INC COMMON 23331A109 9,187 703,300 X 123 586,000 17,200 100,100
DSP GROUP INC COMMON 23332B106 13,959 211,500 X 123 174,100 7,200 30,200
DTE ENERGY CO COMMON 233331107 44 1,500 X 123 1,500
DVI INC COMMON 233343102 3,407 239,100 X 123 188,800 4,700 45,600
DAILY MAIL & GENERAL TST NV COMMON 2338099A2 59 3,000 X 123 3,000
DAISYTEK INTL CORP COMMON 234053106 775 49,000 X 123 32,600 16,400
DALLAS SEMICONDUCTOR CORP COMMON 235204104 13,582 372,100 X 123 301,800 7,700 62,600
DANA CORP COMMON 235811106 11,226 398,266 X 123 224,200 174,066
DANAHER CORP COMMON 235851102 1,729 33,906 X 123 11,245 22,661
DANKA BUSINESS SYS CVT SUB NTS CV BND 236277AB5 690 34,334 X 123 22,317 12,017
DARDEN RESTAURANTS INC COMMON 237194105 351 19,700 X 123 4,300 15,400
DATA DIMENSIONS INC COMMON 237654207 6 1,480 X 123 1,480
DAVIS NY VENTURE FUND B MUT FND 239080203 8 254 X 123 254
DAVOX CORP COMMON 239208101 9,780 365,600 X 123 306,000 8,900 50,700
DE BEERS CONS MINES ADR ADR 240253302 11 500 X 123 500
DEAN FOODS COMMON 242361103 75 2,800 X 123 2,800
MORGAN STANLEY DEAN WITTER SEL MUT FND 24241X833 9 828 X 123 828
DECORA INDS INC COMMON 243593308 1 300 X 123 300
DEERE & CO COMMON 244199105 9,721 255,810 X 123 163,350 92,460
DELAWARE GRP TAX FREE USA FD MUT FND 245909106 45 4,202 X 123 4,202
DELHAIZE AMERICA INC COMMON 246688105 X 123
DELL COMPUTER COMMON 247025109 38,977 722,640 X 123 394,895 327,745
DELPHI AUTO SYSTEMS COMMON 247126105 4,016 250,998 X 123 157,978 93,020
DELTA AIRLINES COMMON 247361108 75 1,400 X 123 1,400
DELUXE CORP COMMON 248019101 15,518 585,600 X 123 467,000 10,300 108,300
DENTSPLY INTERNATIONAL INC COMMON 249030107 136 4,800 X 123 4,800
DEVELOPERS DIVERS REALTY COMMON 251591103 8,647 623,200 X 123 376,850 6,450 239,900
DEVON ENERGY CORP COMMON 25179M103 3,360 69,180 X 123 48,500 20,680
DEXTER CORP COMMON 252165105 10,642 200,800 X 123 160,200 4,600 36,000
DIAGO PLC SPON ADR ADR 25243Q205 126 3,800 X 123 3,800
DIAL CORP NEW COMMON 25247D101 157 11,400 X 123 11,400
DIAMOND OFFSHORE DRILLING COMMON 25271C102 176 4,400 X 123 1,400 3,000
DIAMOND OFFSHORE SUB CNV NTS CV BND 25271CAA0 19,750 427,789 X 123 411,739 16,050
DIEBOLD INC COMMON 253651103 12,232 444,800 X 123 360,900 7,500 76,400
DIGI INTERNATIONAL INC COMMON 253798102 48 5,221 X 123 5,221
DIGITAL LIGHTWAVE INC COMMON 253855100 17,653 283,300 X 123 105,700 63,000 114,600
DIGITAL INSIGHT COMMON 25385P106 20,490 399,800 X 123 288,075 33,100 78,625
DILLARD'S INC CL A COMMON 254067101 82 5,000 X 123 5,000
DIME BANCORP COMMON 25429Q102 7,929 428,600 X 123 349,100 8,800 70,700
DIONEX CORP COMMON 254546104 5,734 174,100 X 123 143,500 4,600 26,000
THE WALT DISNEY CO COMMON 254687106 115,506 2,800,156 X 123 1,425,174 18,200 1,356,782
DITEC COMMUNICATIONS COMMON 25500M103 45,936 433,100 X 123 314,100 35,100 83,900
DIVERSINET CORP COMMON 25536K204 1,557 87,100 X 123 29,750 20,300 37,050
DIXIE GROUP INC SUB DEB CONV CV BND 255519AA8 2,102 98,913 X 123 80,528 6,863 11,522
DOCUMENTUM INC COMMON 256159104 38,766 497,000 X 123 467,600 29,400
DOMINION RESOURCES BLACK WARRI COMMON 25746Q108 95 8,000 X 123 8,000
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 9 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
DOMINION RES INC VA COMMON 25746U109 466 12,113 X 123 3,748 8,365
DONNELLEY RR&SONS COMMON 257867101 729 34,808 X 123 4,900 29,908
DOUBLECLICK INC COMMON 258609304 56 600 X 123 400 200
DOVER CORP COMMON 260003108 3,413 71,300 X 123 33,300 38,000
DOW CHEM COMMON 260543103 51,442 451,248 X 123 272,250 3,050 175,948
DOW JONES & CO INC COMMON 260561105 101 1,400 X 123 600 800
DREYFUS INTL STOCK INDEX FUND MUT FND 26200Q303 101 6,107 X 123 6,107
DSL.NET INC COMMON 262506108 4,596 208,300 X 123 174,600 4,800 28,900
DUPONT E I COMMON 263534109 19,127 361,309 X 123 188,975 14,400 157,934
DUFF & PHELPS CREDIT RATING COMMON 26432F109 20 200 X 123 200
DUKE ENERGY CORP COMMON 264399106 867 16,512 X 123 7,200 9,312
DUN & BRADSTREET COMMON 26483B106 43,902 1,533,710 X 123 828,210 1,300 704,200
DUNES HOTELS & CASINOS INC COMMON 265440107 25 X 123 25
DURA AUTOMOTIVE SYSTEMS INC COMMON 265903104 6 320 X 123 320
DUPONT PHOTOMASKS INC COMMON 26613X101 9,185 158,540 X 123 129,600 3,000 25,940
DURA PHARNACEUTICALS INC COMMON 26632S109 170 13,800 X 123 7,800 6,000
DURA PHARMACEUTICALS CVT NTS CV BND 26632SAA7 106,062 2,598,007 X 123 2,267,583 260,018 70,406
DYNEGY INC COMMON 26816Q101 2,326 37,080 X 123 26,792 10,288
ECI TELECOM COMMON 268258100 1,164 37,100 X 123 37,100
EMC CORP COMMON 268648102 195,897 1,554,741 X 123 736,225 9,400 809,116
ENSCO INTL INC COMMON 26874Q100 5,487 151,900 X 123 129,200 22,700
EOG RESOURCES INC COMMON 26875P101 40 1,900 X 123 1,900
EVI INC CONV PFD 5% CV PFD 268939402 38,563 500,812 X 123 463,312 6,250 31,250
ESCO ELECTRONICS COMMON 269030102 2 144 X 123 144
ETEC SYSTEMS INC COMMON 26922C103 548 4,400 X 123 4,400
E TEK DYNAMICS INC COMMON 269240107 2,447 10,400 X 123 10,400
EARTHGRAINS CO COMMON 270319106 389 26,144 X 123 19,100 7,044
EARTHLINK INC COMMON 270321102 10 500 X 123 500
EASTERN UTILITIES ASSOCIATES COMMON 277173100 147 4,700 X 123 4,700
EASTMAN CHEMICAL CO COMMON 277432100 25 543 X 123 281 262
EASTMAN KODAK COMMON 277461109 3,512 64,670 X 123 35,720 28,950
EATON CORP COMMON 278058102 87,432 1,120,924 X 123 624,416 1,100 495,408
ECHELON CORP COMMON 27874N105 98 1,500 X 123 1,500
ECOLAB INC COMMON 278865100 396 10,784 X 123 10,784
ECONNECT INC COMMON 27889S107 39 3,800 X 123 3,800
EDISON INTERNATIONAL COMMON 281020107 4,469 269,800 X 123 106,690 163,110
EDO CORP SUB DEB CONV CV BND 281347AB0 16,672 1,010,465 X 123 890,009 61,364 59,092
J D EDWARDS & CO COMMON 281667105 11,863 364,300 X 123 293,600 6,600 64,100
EINSTEIN/NOAH BAGEL SUB DEB CV CV BND 282577AC9 16,068 1,890,352 X 123 1,622,117 194,118 74,118
EL PASO ENERGY CORP COMMON 283905107 27,019 669,208 X 123 461,328 900 206,980
ELAN CORP PLC SPONS ADR ADR 284131208 823 17,326 X 123 17,326
ELECTRIC FUEL CORP COMMON 284871100 18 1,500 X 123 1,500
ELECTRONIC ARTS INC COMMON 285512109 961 13,500 X 123 9,800 3,700
ELECTRONIC DATA SYSTEMS CORP COMMON 285661104 5,783 90,100 X 123 90,100
EMBRATEL PARTICIPACOES ADR ADR 29081N100 102 4,000 X 123 4,000
EMERSON ELEC COMMON 291011104 53,627 1,009,448 X 123 540,005 1,100 468,343
EMMIS BROADCASTING CORP CL A COMMON 291525103 37,051 796,800 X 123 745,800 51,000
EMPRESAS ICA SOC SUB DEB CONV CV BND 292448AC1 47,831 2,487,700 X 123 2,134,154 198,040 155,506
ENDESA SPONSORED ADR ADR 29258N107 403 17,200 X 123 17,200
ENDOSONICS CORP COMMON 29264K105 8,589 1,360,600 X 123 1,125,400 31,400 203,800
ENERGY FACTORS SUB DEB CONV CV BND 292667AB8 42 2,020 X 123 2,020
ENERGY EAST CORP COMMON 29266M109 2,572 129,800 X 123 97,600 32,200
ENGLEHARD CORP COMMON 292845104 70 4,596 X 123 4,596
ENNIS BUSINESS FORM COMMON 293389102 1,660 229,000 X 123 164,800 11,100 53,100
ENRON CORP COMMON 293561106 81,530 1,088,880 X 123 474,830 7,700 606,350
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 10 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
ENTERGY CORP NEW COMMON 29364G103 83 4,100 X 123 1,000 3,100
EQUIFAX INC COMMON 294429105 519 20,550 X 123 9,400 11,150
EQUITY OFFICE PROPERTIES TR COMMON 294741103 1,837 73,100 X 123 52,800 20,300
EQUITY RESIDENTIAL PROPS TR COMMON 29476L107 1,419 35,300 X 123 24,800 10,500
EQUITY RESIDTL CVT PFD G 7.25% CV PFD 29476L859 6,029 130,281 X 123 124,092 2,347 3,841
LM ERICSSON ADR 294821400 70 750 X 123 100 650
ESPEED INC CL A COMMON 296643109 9,454 180,500 X 123 145,100 3,600 31,800
ETHYL CORP COMMON 297659104 459 150,000 X 123 150,000
NOKIA OYJ COMMON 29849EUR2 292 1,380 X 123 480 900
LOXLEY PUBLIC CO EURO CONV CV BND 2987009J6 17,425 3,738,733 X 123 3,483,623 18,667 236,444
ADVANCE AGRO PUB EURO CONV CV BND 2987009L1 13,174 4,365,402 X 123 3,540,823 791,527 33,053
BANPU PUBLIC CO EURO CONV CV BND 2987009M9 32,906 1,072,247 X 123 934,424 16,658 121,165
TOTAL ACCESS COMMUN EURO CONV CV BND 2987009U1 12,910 1,085,714 X 123 950,000 88,095 47,619
SSANGYONG OIL REFNG SUB CONV CV BND 2987010A2 11,376 2,414,535 X 123 1,939,909 180,956 293,670
THERMO TERRATECH EURO CONV CV BND 2987010H7 13,833 1,011,634 X 123 964,464 47,170
SAMSUNG DISPLAY DEVICES CONV CV BND 2987010Z7 3,985 350,658 X 123 315,391 35,267
CE CONSUMER ELECTRONIC COMMON 298701194 60 300 X 123 300
BURNS PHILP EURO CONV CV BND 2987020Q5 19,221 9,782,528 X 123 9,202,325 45,806 534,398
SIAM COMMERCIAL BK EURO CONV CV BND 2987020R3 8,793 1,878,728 X 123 1,506,640 142,891 229,197
FEDERAL RLTY INVS TR CONV EURO CV BND 2987021Q4 22,012 3,554,838 X 123 3,415,950 138,888
FMC CORP EURO CONV CV BND 2987021Z4 4,880 1,876,030 X 123 1,876,030
MBI FINANCE LTD EURO CONV CV BND 2987022N0 7,814 2,310,061 X 123 2,310,061
CML GROUP CONV EURO CV BND 2987023T6 9 565,787 X 123 479,933 56,914 28,940
SAPPI FINANCE EURO CONV CV BND 2987024I9 33,562 8,289,976 X 123 6,515,437 827,319 947,220
FLI CAPITAL C I REG EURO CONV CV BND 2987027A3 6,893 14,031,431 X 123 14,031,431
BANGKOK BANK PUB EURO CONV CV BND 2987027D7 63,575 12,851,248 X 123 11,172,327 563,304 1,115,617
OGDEN SUB DEB CONV EURO CV BND 298703018 28,016 789,029 X 123 764,013 25,016
SIAM COMMERCIAL BANK FOR REG COMMON 2987038G7 168 197,000 X 123 197,000
SAMSUNG ELECTRON EURO CONV CV BND 2987039B7 91,227 1,175,349 X 123 962,988 176,967 35,393
THERMEDICS INC CONV ZERO CPN CV BND 2987042N6 1,536 67,165 X 123 56,455 10,710
TELEKOM MALAYSIA EURO CVT CV BND 2987043F2 10,054 9,029,546 X 123 8,374,340 655,205
STB CAYMAN CAPITAL LTD CVT CV BND 2987043P0 6,396 1,478,375,971 X 123 1,478,375,971
APP FIN VII MAURIUS EURO CONV CV BND 2987043V7 43,231 3,175,519 X 123 2,965,952 26,196 183,371
SIAM COMMERCIAL BANK WTS WTS 298705146 116 429,000 X 123 150,000 150,000 129,000
SOFTBANK CORP COMMON 298705310 268 300 X 123 100 200
PT INDAH KIAT PULP & PAPER COMMON 29871A136 3,905 11,823,000 X 123 3,169,000 8,654,000
TOTAL ACCESS COMMUNICATION COMMON 29871A151 1,651 516,000 X 123 256,000 260,000
DATATEC LIMITED COMMON 29871A540 445 25,099 X 123 25,099
REGENT PACIFIC GROUP LTD COMMON 29871A557 47 150,000 X 123 150,000
TRANS COSMOS COMMON 29871A664 141 500 X 123 500
COLT TELECOM GROUP PLC COMMON 29871A748 175 3,600 X 123 3,600
ORIX CORP COMMON 29871A771 139 960 X 123 960
PACIFIC CENTURY CYBERWORKS COMMON 29871A797 167 71,500 X 123 10,500 61,000
KPNQWEST NV COMMON 29871A813 172 3,240 X 123 970 2,270
LEGEND HOLDINGS LTD COMMON 29871A946 127 80,000 X 123 80,000
PACE MICRO TECHNOLOGY PLC COMMON 29871A953 69 4,600 X 123 4,600
SCOOT.COM PLC COMMON 29871A961 212 58,000 X 123 27,000 31,000
ADVA AG OPTICAL NETWORKING COMMON 29871A995 316 500 X 123 250 250
LOGICA PLC COMMON 29871B126 135 4,000 X 123 4,000
CMG PLC COMMON 29871B167 68 800 X 123 800
AVEX INC COMMON 29871B928 76 400 X 123 400
SAUSAGE SOFTWARE LTD COMMON 29871B985 65 17,800 X 123 17,800
UNITED PAN EUROPE COMMUNICATIO COMMON 29871EUR3 196 4,200 X 123 1,200 3,000
EXAR CORP COMMON 300645108 31,595 441,500 X 123 417,450 24,050
EXCHANGE APPLICATIONS INC COMMON 300867108 36,193 683,900 X 123 640,800 43,100
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 11 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
EXIDE CORP 144A CVT SUB NTS P/ CV BND 302051AF4 95,671 2,087,670 X 123 1,908,495 126,477 52,699
EXODUS COMMUNICATIONS INC COMMON 302088109 5,016 35,700 X 123 28,400 900 6,400
EXPONENT INC COMMON 30214U102 55 5,000 X 123 5,000
EXXON MOBIL CORP COMMON 30231G102 247,135 3,170,938 X 123 1,816,295 18,075 1,336,568
FPA PARAMOUNT FUND MUT FND 302546106 54 6,783 X 123 6,783
FPA PERENNIAL FUND MUT FND 302548102 114 5,199 X 123 5,199
FPL GROUP INC COMMON 302571104 2,983 64,759 X 123 37,100 27,659
FAIRMARKET INC COMMON 305158107 10,367 455,700 X 123 426,600 29,100
FAMILY DOLLAR STORES INC COMMON 307000109 7,986 383,700 X 123 326,300 57,400
FARGO ELECTRONICS COMMON 30744P102 5,750 476,700 X 123 396,700 12,100 67,900
FARMER BROS CO COMMON 307675108 18 100 X 123 100
FEDERAL HM LN MTG COMMON 313400301 35,828 810,808 X 123 600,552 24,725 185,531
FEDERAL NATL MTG COMMON 313586109 103,787 1,834,909 X 123 973,580 1,400 859,929
FEDERAL REALTY INVS TRUST COMMON 313747206 81 4,200 X 123 4,200
FEDERAL SIGNAL CORP COMMON 313855108 735 40,700 X 123 24,800 15,900
FEDERATED DEPT STORES COMMON 31410H101 102,181 2,418,495 X 123 1,422,445 2,100 993,950
FEDERATED INVESTORS INC CL-B COMMON 314211103 18,362 672,300 X 123 539,400 13,400 119,500
FEDEX CORP COMMON 31428X106 160 4,130 X 123 600 3,530
FERRO CORP COMMON 315405100 10,333 580,100 X 123 481,400 12,900 85,800
FIDELITY ADVISOR EQUITY GR FD MUT FND 315805200 409 5,303 X 123 5,303
FIDELITY ADVISOR GROWTH OPP FD MUT FN 315807206 307 6,634 X 123 6,634
FIDELITY INTL GR & INC FD MUT FND 315910208 50 1,647 X 123 1,647
FIDELITY DIVERSIFIED INTL FD MUT FND 315910802 51 1,975 X 123 1,975
FIDELITY U S EQUITY INDEX MUT FND 315911206 118 2,217 X 123 2,217
FIDELITY SPART TOTAL MKT IDX MUT FND 315911404 1,351 34,104 X 123 5,797 28,307
FIDELITY SPART MARKET INDEX MUT FND 315912204 584 5,661 X 123 3,983 1,679
FIDELTIY EQUITY INC II FD MUT FND 316145101 42 1,555 X 123 1,555
FIDELITY SELECT DEVEL COMM FD MUT FND 316390566 113 1,412 X 123 1,412
FIDELITY SEL SOFTWARE & CMPTRS MUT FND 316390822 83 820 X 123 820
FIDELITY SELECT ELECTRS MUT FND 316390863 136 1,078 X 123 1,078
FIDELITY SELECT COMPUTERS MUT FND 316390871 93 712 X 123 712
FIELDCREST CANNON SUB DEB CONV CV BND 316549AB0 2,723 267,572 X 123 225,877 38,870 2,825
FIFTH THIRD BANCORP COMMON 316773100 1,956 31,042 X 123 400 30,642
FILENET CORP COMMON 316869106 11,025 370,600 X 123 304,600 8,600 57,400
FINOVA GROUP INC COMMON 317928109 27,146 1,614,624 X 123 858,984 1,400 754,240
FIRST COMMONWEALTH FINL CORP COMMON 319829107 32 3,728 X 123 3,728
FIRST DATA CORP COMMON 319963104 90,565 2,040,901 X 123 1,159,101 2,350 879,450
FIRST MIDWEST BANCORP INC COMMON 320867104 10,539 434,600 X 123 363,300 10,450 60,850
FIRST NATL BANCORP ILL COMMON 320920101 1,075 13,440 X 123 13,440
FST HLTH GRP COMMON 320960107 996 31,500 X 123 19,300 12,200
FIRST SECURITY CORP DEL COMMON 336294103 156 13,000 X 123 13,000
FIRST TENN NATL COR COMMON 337162101 1,275 62,754 X 123 20,500 42,254
FIRST TR INSD MUN BDS UT 39S COMMON 33733W484 1 5 X 123 5
FIRST TR INSD MUN BDS UT 169 MUT FND 33734U594 19 20 X 123 20
FIRST UNION CORP COMMON 337358105 399 10,713 X 123 7,854 2,859
FIRST VIRGINIA BKS COMMON 337477103 101 2,700 X 123 450 2,250
FIRSTAR CORP (NEW) COMMON 33763V109 8,881 387,203 X 123 10,600 376,603
FISERV INC COMMON 337738108 5,924 159,305 X 123 57,150 102,155
FIRSTENERGY COMMON 337932107 6 300 X 123 300
FLEET BOSTON FINL CORP COMMON 339030108 165,241 4,527,151 X 123 2,656,107 3,000 1,868,044
FLORIDA PROGRESS COMMON 341109106 46 1,000 X 123 500 500
FLUOR CORP COMMON 343861100 316 10,200 X 123 10,200
FORD MOTOR CO COMMON 345370100 1,132 24,638 X 123 6,100 18,538
FOREST LABS COMMON 345838106 608 7,200 X 123 4,000 3,200
FORRESTER RESEARCH COMMON 346563109 16,942 312,300 X 123 106,850 62,850 142,600
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 12 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
FORT JAMES CORP COMMON 347471104 3,648 165,800 X 123 113,000 52,800
FOSSIL INC COMMON 349882100 12,858 548,600 X 123 453,800 14,100 80,700
FOUNDATION HEALTH SYSTEMS CL A COMMON 350404109 74 9,200 X 123 1,100 8,100
FOUNDRY NETWORKS INC COMMON 35063R100 4,485 31,200 X 123 10,000 800 20,400
FOX ENTERTAINMENT GRP COMMON 35138T107 6 200 X 123 200
FRANKLIN (AGE) HI INC CL I MUT FND 353538101 2 966 X 123 966
FRANKLIN RESOURCES COMMON 354613101 59 1,750 X 123 400 1,350
FRANKLIN NATURAL RES FD A MUT FND 354713604 55 3,449 X 123 3,449
FRANKLIN SMALLCAP GROWTH MUT FND 354713802 46 930 X 123 930
FRED'S INC COMMON 356108100 159 10,400 X 123 5,400 5,000
FREEMARKETS INC COMMON 356602102 12 100 X 123 100
FREESHOP.COM COMMON 356873109 7,704 395,100 X 123 368,450 26,650
FRESENIUS MEDICAL CARE ADR ADR 358029106 31 1,258 X 123 1,258
FRIEDMAN BILLING RAMSEY CL A COMMON 358433100 38 3,500 X 123 1,500 2,000
FRISCO BAY INDS LTD COMMON 358751105 7 1,000 X 123 1,000
FURNITURE BRANDS INTL INC COMMON 360921100 11,464 609,400 X 123 496,700 11,300 101,400
GATX CORP COMMON 361448103 20,999 552,600 X 123 455,300 10,400 86,900
GTE CORP COMMON 362320103 183,954 2,590,898 X 123 1,448,896 2,500 1,139,502
GT GROUP TELECOM INC CL B COMMON 362359408 230 11,000 X 123 11,000
GABELLI EQUITY TRUST MUT FND 362397101 21 X 123 21
GABELLI GLOBAL MUTIMEDIA TR MUT FND 36239Q109 2 X 123 2
GABELLI UTILITY TRUST Closed E 36240A101 1 X 123 1
GADZOOKS INC COMMON 362553109 7,790 359,200 X 123 325,950 33,250
GALLAGHER A J COMMON 363576109 13,166 405,100 X 123 325,500 8,400 71,200
GANNETT CO COMMON 364730101 55,713 791,663 X 123 555,743 7,600 228,320
GAP INC COMMON 364760108 36,234 727,400 X 123 287,100 440,300
GARDNER DENVER INC COMMON 365558105 4,133 219,700 X 123 168,500 11,900 39,300
GARTNER GROUP INC CL A COMMON 366651107 1,148 72,900 X 123 46,500 26,400
GARTNER GROUP INC CL B COMMON 366651206 14 X 123 14
GATEWAY INC COMMON 367626108 2,000 37,700 X 123 22,100 15,600
GAYLORD CONTAINER CORP CL A COMMON 368145108 375 58,900 X 123 45,100 13,800
GENCORP INC COMMON 368682100 59 7,600 X 123 900 6,700
GENE LOGIC INC COMMON 368689105 6,701 159,300 X 123 148,400 600 10,300
GENENTECH INC COMMON 368710406 30,841 202,900 X 123 77,800 3,800 121,300
GENERAL COMMUNICATION CL A COMMON 369385109 81 15,000 X 123 15,000
GEN DYNAMICS COMMON 369550108 2,567 51,600 X 123 37,200 14,400
GENERAL ELECTRIC COMMON 369604103 232,730 1,495,452 X 123 658,073 6,912 830,467
GEN MILLS COMMON 370334104 3,957 109,352 X 123 31,800 77,552
GENERAL MOTORS CORP COMMON 370442105 145,743 1,757,313 X 123 1,029,765 9,700 717,848
GEN MOTORS CL H COMMON 370442832 12,380 99,440 X 123 95,540 3,900
GENESCO INC COMMON 371532102 2,179 166,000 X 123 121,500 3,800 40,700
GENTEX CORP COMMON 371901109 1,312 35,400 X 123 22,400 13,000
GENUINE PARTS COMMON 372460105 153 6,394 X 123 225 6,169
GENZYME CORP -GENL DIVISION COMMON 372917104 115 2,300 X 123 2,300
GENZYME CORP TISSUE REPAIR COMMON 372917401 60 X 123 60
GENZYME -MOLECULAR ONCOLOGY COMMON 372917500 4 248 X 123 248
GENZYME SURGICAL PRODUCTS COMMON 372917609 5 411 X 123 411
GEORGIA PAC COMMON 373298108 51,613 1,304,584 X 123 729,670 1,300 573,614
GEORGIA-PACIFIC (TIMBER GRP) COMMON 373298702 10,123 395,032 X 123 170,900 250 223,882
GEOWORKS CORP DE COMMON 373692102 19,213 539,300 X 123 521,350 17,950
GIANT CEMENT HLD INC COMMON 374450104 311 10,100 X 123 10,100
GILEAD SCIENCES INC COMMON 375558103 8,175 129,000 X 123 106,300 2,600 20,100
GILLETTE CO COMMON 375766102 10,401 275,976 X 123 138,530 137,446
GLAXO WELLCOME PLC ADR ADR 37733W105 1,794 31,300 X 123 14,300 17,000
GLOBAL INDUSTRIES LTD COMMON 379336100 211 14,400 X 123 14,400
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 13 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
GLOBAL MARINE INC COMMON 379352404 9 350 X 123 350
GLOBIX CORP COMMON 37957F101 1,079 28,300 X 123 26,300 2,000
GLYCOMED INC SUB DEB CONV CV BND 380002AA3 23,640 968,141 X 123 718,330 216,818 32,994
GOLDEN WEST FINL COMMON 381317106 9 300 X 123 300
GOLDMAN SACHS GROUP COMMON 38141G104 5,408 51,379 X 123 25,757 3,800 21,822
GOVTS SECS INC FD GNMA F MUT FND 383743598 1 48,169 X 123 48,169
W R GRACE & CO COMMON 38388F108 3,751 291,325 X 123 77,700 213,625
GRADCO SYSTEMS INC COMMON 384111100 94 X 123 94
GRAINGER W W COMMON 384802104 456 8,400 X 123 5,000 3,400
GREAT LAKES CHEM COMMON 390568103 11,686 343,700 X 123 270,200 6,900 66,600
GREER STATE BANK SC COMMON 397505108 26 1,000 X 123 1,000
GROUP 1 SOFTWARE COMMON 39943Y103 1 36 X 123 36
GRUPO TELEVISA SA SPON ADR ADR 40049J206 262 3,850 X 123 1,150 2,700
GUCCI GROUP COMMON 401566104 18 200 X 123 200
GUIDANT CORP COMMON 401698105 33,776 573,690 X 123 210,598 363,092
GULF CANADA RES LTD -ORD COMMON 40218L305 22 6,000 X 123 6,000
GULFMARK OFFSHORE INC COMMON 402629109 566 27,336 X 123 27,336
HMT TECHNOLOGY SUB CONV NTS CV BND 403917AD9 7,723 747,495 X 123 666,443 68,421 12,632
H & Q HEALTHCARE INVESTORS FD Closed E 404052102 320 11,960 X 123 11,960
HCC INSURANCE HLDG COMMON 404132102 168 12,700 X 123 12,700
HEALTH & RETIREMENT PROP TR COMMON 40426W101 90 10,400 X 123 10,000 400
HADCO CORP COMMON 404681108 18,522 285,500 X 123 231,100 7,200 47,200
HALLIBURTON CO COMMON 406216101 22,550 548,340 X 123 406,490 30,100 111,750
HAMILTON BANCORP INC COMMON 407013101 164 10,500 X 123 2,700 7,800
JOHN HANCOCK REGIONAL BANK MUT FND 409905205 66 1,807 X 123 1,807
JOHN HANCOCK FINANCIAL IND B MUT FND 409905601 24 1,478 X 123 1,478
JOHN HANCOCK FINANCIAL SVCS COMMON 41014S106 2,003 110,900 X 123 80,000 30,900
HANNAFORD BROTHERS CO COMMON 410550107 236 3,200 X 123 300 2,900
HARBOR FEDERAL BANCORP INC COMMON 41151A108 9 660 X 123 660
HARCOURT GENERAL COMMON 41163G101 9 230 X 123 230
HARLAND JOHN H CO COMMON 412693103 458 33,900 X 123 20,100 13,800
HARLEY DAVIDSON COMMON 412822108 3,723 46,900 X 123 35,100 11,800
HARMAN INTL COMMON 413086109 13,338 222,300 X 123 180,300 5,200 36,800
HARNISCHFEGER INDS COMMON 413345109 4 7,000 X 123 7,000
HARRAH'S ENTERTAINMENT INC COMMON 413619107 36 1,950 X 123 450 1,500
OAKMARK INTL FUND MUT FND 413838202 496 33,803 X 123 33,803
HARRIS CORP COMMON 413875105 5,400 156,250 X 123 40,700 115,550
HARSCO CORP COMMON 415864107 14,544 502,600 X 123 402,900 9,600 90,100
HARTE HANKS INC COMMON 416196103 13,284 585,500 X 123 468,300 14,000 103,200
HARTFORD FINANCIAL SVCS GRP COMMON 416515104 1,018 19,308 X 123 2,008 17,300
THE HARTFORD CAPITAL APPRC B MUT FND 416645505 88 2,488 X 123 2,488
HASBRO INC COMMON 418056107 78,105 4,680,460 X 123 2,957,893 64,900 1,657,667
HEALTH CARE PPTYS INV COMMON 421915109 4,301 169,100 X 123 101,500 1,000 66,600
HEALTHSOUTH CORP COMMON 421924101 5,183 911,234 X 123 907,100 4,134
HEALTHSOUTH CORP SUB CONV DEB CV BND 421924AF8 72,286 2,546,680 X 123 2,441,560 75,085 30,034
HEALTH MGMT ASSOC COMMON 421933102 13,147 922,600 X 123 751,300 19,600 151,700
HEALTHCARE REALTY TRUST INC COMMON 421946104 1,063 63,462 X 123 41,014 22,448
HEINZ H J COMMON 423074103 535 15,350 X 123 3,750 11,600
HELLER FINANCIAL INC COMMON 423328103 11,116 483,300 X 123 399,300 9,400 74,600
HERSHEY FOODS CORP COMMON 427866108 249 5,100 X 123 200 4,900
HERTZ CORP CL A COMMON 428040109 2,224 65,300 X 123 41,600 23,700
HEWLETT PACKARD COMMON 428236103 103,303 777,443 X 123 436,091 3,000 338,352
HEXCEL SUB DEB CONV CV BND 428290AA8 10,671 542,739 X 123 469,172 67,545 6,022
HEXCEL CORP SUB CONV NTS CV BND 428291AA6 17,832 1,708,918 X 123 1,470,145 197,660 41,113
HI/FN INC COMMON 428358105 13,878 213,300 X 123 199,700 13,600
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 14 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
HIBERNIA CORP LA CL A COMMON 428656102 21 2,000 X 123 2,000
HILTON HOTELS CVT SUB NTS CV BND 432848AL3 12,249 725,907 X 123 636,804 89,103
HINES HORTICULTURE INC COMMON 433245107 5 600 X 123 600
HISPANIC BROADCASTING CORP COMMON 43357B104 3,307 29,200 X 123 29,200
HOME DEPOT COMMON 437076102 92,537 1,434,683 X 123 661,911 772,772
HON INDUSTRIES COMMON 438092108 4,105 159,400 X 123 142,300 17,100
HONEYWELL INTERNATIONAL INC COMMON 438516106 20,130 382,072 X 123 292,219 19,200 70,653
HOUGHTON MIFFLIN CO COMMON 441560109 12,676 298,700 X 123 252,100 6,700 39,900
HOUSEHOLD INTL INC COMMON 441815107 4,381 117,427 X 123 51,698 612 65,117
HUBBELL INC CL B COMMON 443510201 373 13,612 X 123 13,612
HUDSON UNITED BANCORP COMMON 444165104 12,069 556,509 X 123 445,110 10,918 100,481
HUMAN GENOME CVTS 144A W/RTS CV BND 444903AG3 8,487 63,014 X 123 51,598 8,676 2,740
HUNTINGTON BANCSHARES COMMON 446150104 1,251 55,915 X 123 27,535 28,380
HUSSMANN INTERNATIONAL INC COMMON 448110106 464 36,550 X 123 21,350 15,200
HUTCHINSON TECH COMMON 448407106 416 23,600 X 123 17,000 6,600
HUTCHINSON TECH CONV CV BND 448407AC0 11,918 493,822 X 123 410,049 60,846 22,927
HUTTIG BUILDING PRODUCTS COMMON 448451104 11 2,387 X 123 679 1,708
HVIDE MARINE INC COMMON 44851M109 78,587 5,987,600 X 123 5,442,214 382,930 162,456
HVIDE MARINE INC WTS A WTS 44851M117 114 56,945 X 123 51,423 4,029 1,493
HVIDE MARINE 144A WTS 6/30/07 WTS 44851M125 705 156,777 X 123 140,538 11,994 4,245
HYPERION SOLUTIONS CORP COMMON 44914M104 10,377 319,300 X 123 261,300 7,000 51,000
IBP INC COMMON 449223106 709 45,000 X 123 23,300 21,700
ICOS CORP COMMON 449295104 343 9,500 X 123 500 9,000
IDEC PHARMACEUTICALS CORP COMMON 449370105 9,491 96,600 X 123 42,600 21,300 32,700
IMC GLOBAL INC COMMON 449669100 8,726 594,100 X 123 496,200 14,700 83,200
IMCO RECYCLING INC COMMON 449681105 372 33,600 X 123 22,100 11,500
IMS HEALTH INC COMMON 449934108 3,225 190,401 X 123 74,600 115,801
I-STAT CORP COMMON 450312103 8 500 X 123 500
ITC DELTACOM INC COMMON 45031T104 66,612 1,869,800 X 123 1,379,125 131,650 359,025
ITI TECHNOLOGIES INC COMMON 450564109 161 5,400 X 123 5,400
ITLA CAPITAL CORP COMMON 450565106 45 3,500 X 123 3,500
IDACORP INC COMMON 451107106 177 5,100 X 123 5,100
IDEXX LABORATORIES INC COMMON 45168D104 5,117 219,500 X 123 187,200 4,800 27,500
ILEX ONCOLOGY INC COMMON 451923106 75 1,788 X 123 1,788
ILLINOIS TOOL WORKS INC COMMON 452308109 10,072 182,303 X 123 88,102 94,202
IMATION CORP COMMON 45245A107 43 1,623 X 123 29 1,594
IMCLONE SYSTEMS COMMON 45245W109 3,921 51,000 X 123 19,500 11,400 20,100
IMMUNEX CORP COMMON 452528102 95 1,500 X 123 900 600
IMPERIAL BANCORP COMMON 452556103 21,089 680,300 X 123 257,700 150,800 271,800
IMPERIAL CREDIT INDUSTRIES COMMON 452729106 230 51,100 X 123 11,500 39,600
IMPSAT FIBER NETWORKS INC COMMON 45321T103 148 5,300 X 123 5,300
INCO LTD CVT DEBS CV BND 453258AH8 5,882 178,825 X 123 175,165 3,660
INFORMIX CORP COMMON 456779107 17,168 1,013,600 X 123 811,900 20,200 181,500
INFOSYS TECHNOLOGIES ADR ADR 456788108 145 750 X 123 750
INFOSPACE.COM INC COMMON 45678T102 189 1,300 X 123 1,300
INGERSOLL RAND CO COMMON 456866102 7,445 168,251 X 123 152,800 15,451
INFORMATION RESOURCES INC COMMON 456905108 4,266 533,200 X 123 433,500 12,400 87,300
INGRAM MICRO INC SUB CONV DEB CV BND 457153AB0 9,765 154,410 X 123 140,386 9,067 4,956
INKTOMI CORP COMMON 457277101 7,936 40,700 X 123 39,900 800
INTEGRAL SYSTEMS INC MD COMMON 45810H107 72 1,600 X 123 1,600
INTEGRATED DEVICE TECH INC COMMON 458118106 12,514 315,800 X 123 261,100 8,100 46,600
INTEGRATED PROCESS EQUIP CONV CV BND 45812KAD0 2,088 64,102 X 123 64,102
INTEGRATED SYSTEMS INC COMMON 45812M104 398 10,500 X 123 500 10,000
INTEGRATED SILICON SOLUTION COMMON 45812P107 19,229 656,000 X 123 613,900 42,100
INTEL CORP COMMON 458140100 341,059 2,585,007 X 123 1,205,820 17,300 1,361,887
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 15 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
INTER-TEL INC COMMON 458372109 5,940 217,000 X 123 174,500 4,700 37,800
INTERFACE SYS INC COMMON 458667102 210 3,162 X 123 3,162
INTERIM SERVICES INC COMMON 45868P100 598 32,200 X 123 29,500 2,700
INTERMEDIA COMMUNICATIONS COMMON 458801107 12,704 262,950 X 123 213,400 5,000 44,550
IBM COMMON 459200101 184,368 1,562,442 X 123 1,003,490 10,500 548,452
INTL FLAV & FRAG COMMON 459506101 1,622 46,250 X 123 29,900 16,350
INTL MULTIFOODS CORP COMMON 460043102 4,839 361,800 X 123 287,600 8,000 66,200
INTL PAPER COMMON 460146103 4,465 104,436 X 123 71,600 32,836
INTERNATIONAL RECTIFIER CORP COMMON 460254105 10,603 278,100 X 123 218,400 5,500 54,200
INTERNET CAPITAL GROUP INC COMMON 46059C106 117 1,300 X 123 1,300
INTERNET HOLDRS TRUST COMMON 46059W102 17 100 X 123 100
INERPUBLIC GROUP COS INC COMMON 460690100 19 400 X 123 400
INTRANET SOLUTIONS COMMON 460939309 3,809 82,800 X 123 68,200 2,100 12,500
INTEVAC INC SUB CONV NTS CV BND 461148AC2 5,799 556,799 X 123 463,709 48,485 44,606
AMERICAN FDS IVEST CO OF AMER MUT FND 461308108 826 24,971 X 123 24,971
INVESTMENT TECHNOLOGY GROUP COMMON 46145F105 9,503 269,600 X 123 224,100 6,000 39,500
INVITROGEN CORP COMMON 46185R100 4,529 78,000 X 123 27,200 18,100 32,700
INVESTORS FINANCIAL SVCS CORP COMMON 461915100 512 8,700 X 123 8,700
I2 TECHNOLOGIES INC COMMON 465754109 14,215 116,400 X 123 40,100 800 75,500
IVEX PACKAGING CORP COMMON 465855104 104 13,700 X 123 13,700
MACKENZIE IVY INTL FD CL A MUT FND 465903102 107 2,347 X 123 2,347
JDN REALTY CORP COMMON 465917102 8 750 X 123 750
JDS UNIPHASE CORP COMMON 46612J101 99,615 826,254 X 123 311,750 6,000 508,504
JACOBSON'S STORE SUB CONV DEB CV BND 469834AC9 4,152 186,243 X 123 179,815 6,429
JANUS FUND MUT FND 471023101 136 2,805 X 123 2,805
JANUS WORLDWIDE FUND MUT FND 471023309 911 10,664 X 123 10,664
JANUS GLOBAL TECHNOLOGY FUND MUT FND 471023663 212 5,753 X 123 5,753
JAZZTEL PLC ADR ADR 47214R152 113 1,400 X 123 1,400
JEFFERSON PILOT COMMON 475070108 13 200 X 123 200
JOHNSON & JOHNSON COMMON 478160104 12,316 175,311 X 123 48,530 126,781
JOHNSON CONTROLS COMMON 478366107 3,892 72,000 X 123 71,700 300
JONES APPAREL GROUP INC COMMON 480074103 2,660 84,102 X 123 83,700 402
JOSTENS COMMON 481088102 351 14,400 X 123 1,500 12,900
JUNIPER NETWORKS COMMON 48203R104 132 500 X 123 500
KLA-TENCOR CORPORATION COMMON 482480100 3,286 39,000 X 123 37,200 1,800
KMART CORP COMMON 482584109 33 3,400 X 123 1,300 2,100
KAMAN CORP SUB DEB CONV CV BND 483548AC7 1,498 74,572 X 123 74,572
KANA COMMUNICATIONS INC COMMON 483600102 54 800 X 123 800
KANSAS CITY PWR & LT COMMON 485134100 223 7,700 X 123 2,000 5,700
KANSAS CITY SOUTHN INDS INC COMMON 485170104 516 6,000 X 123 6,000
KAYNE ANDERSON SM-MID CAP MUT FND 486607203 45 2,937 X 123 2,937
KAYNE INTL RISING DVDS FD MUT FND 486607302 104 5,617 X 123 5,617
KEANE INC COMMON 486665102 101 4,000 X 123 4,000
KELLOGG CO COMMON 487836108 21 800 X 123 600 200
UNITS KEMPER TE INSD INCM #A-9 MUT FND 488902362 9 50 X 123 50
KENT ELECTRONIC SUB DEB CONV CV BND 490553AA2 99,958 2,273,980 X 123 2,095,298 114,074 64,608
KERR MCGEE COMMON 492386107 5,701 98,712 X 123 59,632 39,080
KEY ENERGY GROUP COMMON 492914106 3,782 327,100 X 123 238,300 88,800
KEY ENERGY SVCS CVT SUB NTS CV BND 492914AF3 50,131 1,744,855 X 123 1,466,882 237,143 40,831
KEYCORP (NEW) COMMON 493267108 39,995 2,104,987 X 123 1,266,624 2,500 835,863
KEYNOTE SYSTEMS INC COMMON 493308100 7,219 70,600 X 123 28,700 14,000 27,900
KEYSPAN ENERGY COMMON 49337W100 72 2,608 X 123 2,608
KIMBERLY CLARK COMMON 494368103 143,777 2,564,579 X 123 1,518,491 12,100 1,033,988
KING PHARMACEUTICALS INC COMMON 495582108 21 676 X 123 676
KMART FIN CONV PFD 7.75% CV PFD 498778208 2,467 190,998 X 123 129,999 60,999
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 16 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
KNIGHT RIDDER INC COMMON 499040103 31 600 X 123 600
KNIGHT TRIMARK GROUP INC CL A COMMON 499068104 2,208 43,300 X 123 30,200 13,100
KOHLS CORP COMMON 500255104 42,780 417,370 X 123 140,600 3,600 273,170
PHILIPS ELECTRONICS -NY SHR COMMON 500472204 104,899 612,327 X 123 427,667 756 183,904
KOPIN CORP COMMON 500600101 29,542 429,700 X 123 402,500 27,200
KOS PHARMACEUTICALS INC COMMON 500648100 71 5,000 X 123 5,000
KROGER COMMON 501044101 40,548 2,308,764 X 123 1,285,454 37,800 985,510
KULICKE & SOFA INDUSTRIES COMMON 501242101 32,089 500,900 X 123 383,200 34,200 83,500
KYOCERA CORP SPONS ADR ADR 501556203 78 472 X 123 462 10
LG&E ENERGY CORP COMMON 501917108 38 1,670 X 123 1,670
LSI LOGIC COMMON 502161102 6,841 94,200 X 123 70,100 24,100
LTX CORP COMMON 502392103 31,211 690,700 X 123 647,000 43,700
LADD FURNITURE INC COMMON 505739201 58 3,500 X 123 3,500
LAFARGE CORP COMMON 505862102 97 4,100 X 123 4,100
LAGUNA HILLS UTIL CO COMMON 507205102 43 2,000 X 123 2,000
LAM RESEARCH SUB CONV DEB CV BND 512807AC2 57,610 1,211,019 X 123 1,102,427 84,673 23,919
LANIER WORLDWIDE COMMON 51589L105 258 125,140 X 123 23,100 102,040
LASON INC COMMON 51808R107 23 3,470 X 123 3,470
LATIN AMERICA INVESTMENT FD Closed E 518279104 172 12,700 X 123 12,700
LEAP WIRELESS INTL INC COMMON 521863100 94 949 X 123 74 875
LEGGETT & PLATT INC COMMON 524660107 5,601 260,500 X 123 164,650 300 95,550
LEGG MASON INC COMMON 524901105 4 100 X 123 100
LEHMAN BROS HOLDING INC COMMON 524908100 7,159 73,800 X 123 66,500 7,300
LENNAR CONV ZERO CPN CV BND 526057AA2 14,075 412,308 X 123 397,456 12,377 2,475
LEVEL 3 COMMUNICATIONS INC COMMON 52729N100 21 200 X 123 200
LEXMARK INTL GRP INC CL A COMMON 529771107 54,774 517,960 X 123 272,250 1,400 244,310
LIBERTY FINANCIAL COS COMMON 530512102 357 18,000 X 123 10,200 7,800
LIBERTY PPTY TRUST COMMON 531172104 14,430 602,800 X 123 484,900 11,900 106,000
LIFEPOINT HOSPITALS COMMON 53219L109 1 34 X 123 34
LIGHTPATH TECHNOLOGIES INC CL COMMON 532257102 13,614 301,700 X 123 282,400 19,300
LILLY ELI COMMON 532457108 12,335 196,968 X 123 85,003 2,160 109,805
LILLY INDS INC CL A COMMON 532491107 47 3,800 X 123 3,800
LIMITED INC COMMON 532716107 1,881 44,648 X 123 29,448 15,200
LINCARE HLDG COMMON 532791100 630 22,200 X 123 11,500 10,700
LINCOLN ELECTRIC HOLDINGS COMMON 533900106 225 9,300 X 123 8,500 800
LINCOLN NATL CONV SEC FD Closed E 534183108 2 100 X 123 100
LINCOLN NATL CORP COMMON 534187109 1,732 51,700 X 123 41,900 9,800
LINEAR TECHNOLOGY CORP COMMON 535678106 16,597 301,760 X 123 199,710 600 101,450
LITTON INDS INC COMMON 538021106 51,594 1,167,605 X 123 706,900 1,000 459,705
LIZ CLAIBORNE COMMON 539320101 19,452 424,600 X 123 332,200 8,800 83,600
L90 INC COMMON 539441105 7,602 400,100 X 123 333,000 10,100 57,000
LOCAL FINANCIAL CORP COMMON 539553107 648 75,700 X 123 54,300 21,400
LOCKHEED MARTIN CORP COMMON 539830109 10,834 530,100 X 123 494,900 35,200
LOEWS CORP COMMON 540424108 10 200 X 123 200
LOEWS CORP SUB CONV NTS CV BND 540424AL2 336,744 5,793,195 X 123 5,513,895 20,757 258,542
LOMAS FINL CORP COMMON 541535100 4,267 X 123 4,267
LONE STAR TECHNOLOGIES COMMON 542312103 33 700 X 123 700
LONGVIEW FIBRE COMMON 543213102 295 20,000 X 123 20,000
LS GROWTH FUND I MUT FN 543487102 8,542 560,857 X 123 144,423 416,434
LS CORE VALUE FUND I MUT FN 543487201 28,434 1,946,167 X 123 222,158 1,724,010
LS SMALL CAP VALUE FUND I MUT FN 543487300 74,562 3,849,349 X 123 1,919,157 1,930,192
LS INTL EQUITY FUND I MUT FN 543487409 96,990 4,343,490 X 123 1,999,919 2,343,571
LS GLOBAL TECHNOLOGY FD I MUT FND 543487540 653 46,360 X 123 16,397 29,964
LS AGGRESSIVE GROWTH FD RETAIL MUT FN 543487631 12 277 X 123 277
LS AGGRESSIVE GROWTH FD I MUT FN 543487797 8,260 184,131 X 123 32,687 151,445
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 17 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
LS MID CAP VALUE FUND I MUT FN 543487813 3,209 268,057 X 123 11,328 256,729
LS SMALL CAP GROWTH FUND I MUT FN 543487854 27,523 920,497 X 123 356,390 309 563,798
LS WORLDWIDE FUND I MUT FN 543487870 8,131 542,066 X 123 542,066
LS CORE GROWTH FUND-LSIT MUT FN 543495402 26,534 2,436,573 X 123 2,436,573
LS SMALL COMPANY VALUE FD-LSIT MUT FN 543495881 44,607 4,176,658 X 123 4,176,658
LOWES COS COMMON 548661107 2,265 38,796 X 123 500 38,296
LUCENT TECHNOLOGIES INC COMMON 549463107 51,148 835,070 X 123 415,907 500 418,663
LUNAR CORP COMMON 550362107 4 300 X 123 300
MBIA INC COMMON 55262C100 52 1,000 X 123 1,000
MBNA CORP COMMON 55262L100 63 2,465 X 123 1,500 965
MBL INTL FINANCE BERMUDA CONV CV BND 55262XAA2 12,790 524,105 X 123 524,105
MCN ENERGY GROUP INC COMMON 55267J100 9,888 395,500 X 123 343,900 51,600
MDC COMMUNICATIONS COMMON 55267W309 81 7,000 X 123 1,000 6,000
MCI WORLDCOM INC COMMON 55268B106 159,278 3,515,097 X 123 2,052,108 16,700 1,446,289
MDU RESOURCES GROUP INC COMMON 552690109 163 7,875 X 123 7,875
MGIC INVT CORP WIS COMMON 552848103 635 14,560 X 123 200 14,360
MACROVISION CORP COMMON 555904101 97,967 1,137,500 X 123 837,400 93,000 207,100
MACROMEDIA INC COMMON 556100105 23,752 263,000 X 123 118,000 51,900 93,100
MAGELLAN HEALTH SVCS COMMON 559079108 1,976 410,700 X 123 300,400 20,300 90,000
MANDALAY RESORT GROUP COMMON 562567107 8 500 X 123 500
MANOR CARE INC COMMON 564055101 9,288 688,000 X 123 670,000 18,000
MANPOWER INC COMMON 56418H100 15,311 431,302 X 123 344,000 8,000 79,302
MAPICS INC COMMON 564910107 4,670 293,000 X 123 240,400 16,400 36,200
MANUGISTICS GROUP INC COMMON 565011103 7,502 147,100 X 123 128,700 3,500 14,900
MARCUS CORP COMMON 566330106 605 46,775 X 123 46,775
MARINE DRILLING CO INC COMMON 568240204 54,044 1,969,700 X 123 1,403,000 173,600 393,100
MARSH & MCLENNAN COMMON 571748102 33,243 301,351 X 123 172,199 300 128,852
MARSHALL & ILSLEY COMMON 571834100 4,276 74,046 X 123 28,900 1,000 44,146
MARRIOTT INTERNATIONAL COMMON 571903202 268 8,500 X 123 6,700 1,800
MARTIN MARIETTA MATERIALS COMMON 573284106 166 3,500 X 123 1,000 2,500
MASCO CORP COMMON 574599106 32,994 1,609,472 X 123 1,043,092 43,900 522,480
MASCOTECH INC COMMON 574670105 14 1,155 X 123 1,155
MASCOTECH SUB DEB CONV CV BND 574670AB1 70,980 2,377,422 X 123 2,122,583 227,420 27,419
MASSMUTUAL CORP INV Closed E 576292106 6 300 X 123 300
MATRIX ONE INC COMMON 57685P304 6,362 159,300 X 123 57,900 36,200 65,200
MATSUSHITA ELEC INDL LTD ADR ADR 576879209 64 210 X 123 210
MATTEL INC COMMON 577081102 4,830 460,047 X 123 428,800 31,247
MAXTOR CORP SUB DEB CONV CV BND 577729AA4 55,700 1,989,275 X 123 1,742,050 188,125 59,100
MAXIM INTEGRATED PRODUCTS COMMON 57772K101 227 3,200 X 123 2,200 1,000
MAXWELL TECHNOLOGIES INC COMMON 577767106 19 1,400 X 123 1,400
MAY DEPT STORES CO COMMON 577778103 234 8,200 X 123 700 7,500
MAVERICK TUBE CORP COMMON 577914104 10,610 327,100 X 123 262,900 7,700 56,500
MCDONALDS COMMON 580135101 88,632 2,371,419 X 123 1,481,450 25,900 864,069
MCGRAW HILL COS INC COMMON 580645109 6,035 132,639 X 123 42,825 89,814
MCKESSON HBOC INC COMMON 58155Q103 61 2,900 X 123 900 2,000
MEAD CORP COMMON 582834107 112 3,200 X 123 3,200
MEDIAONE GROUP INC COMMON 58440J104 74,357 917,992 X 123 520,984 900 396,108
MEDIA 100 INC COMMON 58440W105 18,055 517,700 X 123 484,700 33,000
MEDICAL CARE INT SUB DEB CONV CV BND 584505AC5 30,397 524,540 X 123 444,619 70,443 9,478
MEDICIS PHARMACEUTICAL -CL A COMMON 584690309 13,340 333,500 X 123 266,800 6,100 60,600
MEDIMMUNE INC COMMON 584699102 14,191 81,500 X 123 53,000 25,500 3,000
MEDITRUST CORP COMMON 58501T306 5 2,922 X 123 2,922
MEDTRONIC INC COMMON 585055106 99,908 1,942,312 X 123 905,238 7,600 1,029,474
MELLON FINANCIAL CORP COMMON 58551A108 1,064 35,780 X 123 21,380 14,400
THE MENS WEARHOUSE COMMON 587118100 15,781 532,700 X 123 445,900 10,800 76,000
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 18 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
MERCK & CO COMMON 589331107 110,555 1,779,563 X 123 1,065,654 16,225 697,684
MERCURY INTERACTIVE CORP COMMON 589405109 42,137 531,700 X 123 357,300 68,400 106,000
MERIDIAN DIAGNOSTICS INC COMMON 589602101 3,080 357,100 X 123 266,300 18,000 72,800
MERISTAR HOSPITALITY CORP COMMON 58984Y103 9,281 532,235 X 123 439,171 10,253 82,811
MERRILL LYNCH EUROFUND CL B MUT FND 589922103 107 8,271 X 123 8,271
MERRILL LYNCH GLOBAL B MUT FND 589939206 189 13,545 X 123 13,545
MERRILL LYNCH & CO COMMON 590188108 62,895 599,000 X 123 247,900 4,500 346,600
MESA AIR GROUP COMMON 590479101 159 25,400 X 123 3,400 22,000
MERRILL LYNCH PACIFIC FUND-B MUT FND 590906202 94 3,061 X 123 3,061
META GROUP INC COMMON 591002100 464 17,800 X 123 17,800
METAL MANAGEMENT INC COMMON 591097100 7 3,000 X 123 3,000
METALS USA INC COMMON 591324108 26 4,000 X 123 4,000
METROMEDIA FIBER NETWORK -A COMMON 591689104 7,430 76,800 X 123 74,100 1,500 1,200
MICHAEL FOODS INC NEW COMMON 594079105 16,971 808,150 X 123 652,750 17,900 137,500
MICHAELS STORES INC COMMON 594087108 6,398 157,000 X 123 122,400 3,100 31,500
MICROSOFT CORP COMMON 594918104 176,600 1,662,119 X 123 820,156 16,492 825,471
MICROCHIP TECHNOLOGY INC COMMON 595017104 7,548 114,800 X 123 98,300 16,500
MICRON TECHNOLOGY COMMON 595112103 668 5,300 X 123 5,300
MIDAS INC COMMON 595626102 7 298 X 123 66 232
MID AMERICA BANCORP COMMON 595915109 217 8,361 X 123 8,361
MIDWEST EXPRESS HLDGS COMMON 597911106 173 6,750 X 123 6,750
MILACRON INC COMMON 598709103 9,613 665,850 X 123 550,550 15,100 100,200
MILLENNIUM PHARMACEUTICALS COMMON 599902103 701 5,400 X 123 5,200 200
MILLER (HERMAN) INC COMMON 600544100 384 13,700 X 123 5,900 7,800
MILLIPORE CORP COMMON 601073109 119 2,100 X 123 1,300 800
MINIMED INC COMMON 60365K108 14,426 111,400 X 123 79,600 26,100 5,700
MINNESOTA MNG & MFG COMMON 604059105 59,910 676,474 X 123 362,007 700 313,767
MIRAGE RESORTS INC COMMON 60462E104 24 1,250 X 123 1,250
MODIS PROFESSIONAL SVCS COMMON 607830106 6,712 542,400 X 123 445,500 14,400 82,500
MOLEX INC CL A COMMON 608554200 918 20,689 X 123 20,689
MONACO COACH CORP COMMON 60886R103 2,934 154,400 X 123 112,100 8,900 33,400
MONSANTO CO COMMON 611662107 57,587 1,118,190 X 123 725,360 1,800 391,030
MONTANA POWER CO COMMON 612085100 2,427 37,924 X 123 37,900 24
MONY GROUP INC COMMON 615337102 22 683 X 123 683
MORAN ENERGY SUB DEB CONV CV BND 616457AC1 3,154 206,670 X 123 158,210 48,461
MORGAN JP & CO COMMON 616880100 15,261 115,830 X 123 102,750 13,080
MORGAN ST DEAN WITTER DISCOV COMMON 617446448 219,938 2,653,847 X 123 1,444,035 5,200 1,204,612
MSDW QUAL MUNI INV TR Closed E 61745P668 26 2,000 X 123 2,000
MORRISON MANAGEMENT SPECIALIST COMMON 618459101 10,634 383,216 X 123 276,350 17,800 89,066
MOTHERS WORK INC COMMON 619903107 22 1,828 X 123 1,769 59
MOTOROLA INC COMMON 620076109 72,277 495,047 X 123 271,189 500 223,358
MUNDER NET NET FUND CL B MUT FND 626124317 80 940 X 123 940
MIT FD UNIT CTF SER 7 CALIF COMMON 626233134 2 15 X 123 15
MYLAN LABS COMMON 628530107 30 1,100 X 123 1,100
MYRIAD GENETICS INC COMMON 62855J104 3,766 62,500 X 123 51,700 1,700 9,100
NABI INC SUB CONV NTS CV BND 628716AB8 23,884 2,132,501 X 123 1,814,786 169,643 148,071
NBTY INC COMMON 628782104 14,810 1,082,000 X 123 989,650 92,350
NCR CORP COMMON 62886E108 3 68 X 123 68
NHC COMMUNICATIONS INC COMMON 628937104 91 11,000 X 123 11,000
NPC INTL COMMON 629360306 114 15,000 X 123 2,200 12,800
NABISCO GROUP HLDGS COMMON 62952P102 316 26,200 X 123 4,500 21,700
NABORS INDS INC COMMON 629568106 27,731 714,482 X 123 465,782 1,200 247,500
NASDAQ-100 SHARES COMMON 631100104 88 800 X 123 800
NATIONAL AUTO CREDIT INC COMMON 632900106 5 4,637 X 123 4,637
NATIONAL CITY CORP COMMON 635405103 978 47,416 X 123 17,296 30,120
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 19 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
NATIONAL COMPUTER SYS INC COMMON 635519101 14,129 278,400 X 123 224,200 5,700 48,500
NATIONAL DISCOUNT BROKERS COMMON 635646102 14,615 296,000 X 123 277,150 18,850
NATIONAL HEALTH REALTY INC COMMON 635905102 4 500 X 123 500
NATIONAL HEALTHCARE CORP COMMON 635906100 3 500 X 123 500
NATIONAL HEALTHCARE INVS INC COMMON 63633D104 6 500 X 123 500
NATIONAL INSTRUMENTS CORP COMMON 636518102 5,299 112,900 X 123 93,300 2,900 16,700
NATIONAL SEMICONDUCTOR CORP COMMON 637640103 2,831 46,600 X 123 34,100 12,500
NATL SVC INDS COMMON 637657107 7,361 349,500 X 123 293,200 8,100 48,200
NAVISITE INC COMMON 63935M109 767 6,300 X 123 6,300
NAVIGANT CONSULTING GROUP COMMON 63935N107 44 4,000 X 123 4,000
NEIMAN MARCUS GRP CL A COMMON 640204202 1,171 42,119 X 123 33,289 8,830
NEIMAN MARCUS GRP CL B COMMON 640204301 11 400 X 123 400
NEMATRON CORP COMMON 640441101 3 1,054 X 123 1,054
NETWORKS ASSOCIATES INC COMMON 640938106 202 6,249 X 123 1,249 5,000
NESTLE S ASPONS ADR FOR REG ADR 641069406 18 200 X 123 200
NET2PHONE INC COMMON 64108N106 1,224 20,700 X 123 20,700
NETCREATIONS INC COMMON 64110N102 20,217 475,700 X 123 442,900 32,800
NETEGRITY INC COMMON 64110P107 32,353 472,300 X 123 351,500 35,200 85,600
NETOPTIX CORP COMMON 64116F103 26,776 155,900 X 123 146,000 9,900
NETRATINGS INC COMMON 64116M108 3,077 123,400 X 123 103,400 3,000 17,000
NETWORK APPLIANCE INC COMMON 64120L104 2,036 24,600 X 123 22,400 2,200
NEUBERGER BERMAN INC COMMON 641234109 70 2,500 X 123 2,500
NEW CENTURY ENERGIES INC COMMON 64352U103 72 2,401 X 123 2,401
NEW GERMANY FUND MUT FND 644465106 4 267 X 123 267
NEW JERSEY RESOURCES COMMON 646025106 10,341 241,900 X 123 184,000 5,200 52,700
NEW YORK TIMES CL A COMMON 650111107 30,387 707,700 X 123 251,500 456,200
NEWELL RUBBERMAID INC COMMON 651229106 11,226 452,448 X 123 231,375 221,073
NEWFIELD EXPLORATION CO COMMON 651290108 17,093 484,900 X 123 390,700 8,700 85,500
NEWMONT MNG COMMON 651639106 7,539 336,005 X 123 273,835 62,170
NEWPORT CORP COMMON 651824104 33,386 247,300 X 123 231,800 15,500
NEWPORT NEWS SHIPBUILDING COMMON 652228107 12,196 403,164 X 123 321,700 10,800 70,664
NEWS CORP LTD SPONS ADR ADR 652487703 117 2,080 X 123 2,080
NEXTEL COMMUNICATIONS CL A COMMON 65332V103 53,722 362,375 X 123 133,500 5,500 223,375
NEXTEL PARTNERS INC -A COMMON 65333F107 9 300 X 123 300
NIAGARA MOHAWK HOLDINGS INC COMMON 653520106 5,160 382,200 X 123 294,100 88,100
NICHOLAS LTD EDITION INC MUT FND 653738104 1,900 80,079 X 123 80,079
NICHOLAS FUND II INC MUT FND 653740100 755 21,224 X 123 21,224
NIKE INC CL B COMMON 654106103 16 400 X 123 400
NOKIA CORP SPON ADR A ADR 654902204 1,310 5,900 X 123 3,100 2,800
NOBLE DRILLING COMMON 655042109 5,917 143,004 X 123 123,822 19,182
NORAM ENERGY SUB CONV CV BND 655419AC3 5,933 89,274 X 123 79,488 9,786
NORDSON CORP COMMON 655663102 313 6,800 X 123 6,800
NORFOLK SOUTHN CORP COMMON 655844108 1,181 82,865 X 123 41,548 41,317
NORTEL NETWORKS CORP COMMON 656569100 114,708 909,480 X 123 430,590 5,900 472,990
NORTHEAST OPTIC NETWORK COMMON 664334109 16,346 193,300 X 123 176,950 16,350
NORTHEAST UTILITIES COMMON 664397106 716 33,300 X 123 33,300
NORTHERN TECHNOLOGY FUND MUT FND 665162798 670 10,177 X 123 10,177
NORTHN STS PWR MINN COMMON 665772109 209 10,500 X 123 10,500
NORTHERN TR CORP COMMON 665859104 69,214 1,024,450 X 123 499,350 525,100
NORTHROP GRUMMAN CORP COMMON 666807102 7,055 133,261 X 123 45,150 88,111
NOVA CORP/GEORGIA COMMON 669784100 1,442 49,500 X 123 32,600 16,900
NOVACARE COMMON 669930109 1,000 X 123 1,000
NOVELL INC COMMON 670006105 11 400 X 123 400
NOVELLUS SYSTEMS INC COMMON 670008101 2,722 48,500 X 123 46,500 1,600 400
NSTAR COMMON 67019E107 16,313 388,400 X 123 325,300 7,500 55,600
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 20 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
NUCOR CORP COMMON 670346105 1,435 28,700 X 123 18,400 10,300
NUVEEN INSD QUALITY MUNI FD Closed E 67062N103 47 3,500 X 123 3,500
NVEST L.P COMMON 67065F107 41 2,500 X 123 2,500
NVIDIA CORP COMMON 67066G104 16,001 189,400 X 123 148,700 40,700
NVEST BALANCED FD CL Y MUT FND 67067Q408 8,983 807,789 X 123 807,789
NVEST GROWTH & INCOME FD A MUT FND 67067S107 80 5,247 X 123 5,247
OGE ENERGY CORP COMMON 670837103 38 2,000 X 123 2,000
OM GROUP INC COMMON 670872100 14,373 315,900 X 123 256,100 7,100 52,700
NUVEEN MICH QUALITY INC MUNI MUT FND 670979103 118 9,100 X 123 9,100
OCCIDENTAL PETE COMMON 674599105 122 5,900 X 123 900 5,000
OFFICE DEPOT COMMON 676220106 1,466 126,825 X 123 94,975 31,850
OGDEN CORP SUB DEB CONV CV BND 676346AC3 1,441 43,505 X 123 43,505
OGDEN CORP SUB DEB CONV EURO CV BND 676346AD1 774 21,784 X 123 21,784
OHIO CASUALTY CORP COMMON 677240103 1,478 82,696 X 123 82,696
OLIN COMMON 680665205 12,068 679,900 X 123 531,100 16,500 132,300
OMNICARE CVT CV BND 681904AD0 33,928 1,165,704 X 123 1,115,930 44,723 5,051
OMNICOM GROUP COMMON 681919106 96,903 1,035,011 X 123 474,975 7,200 552,836
OMNOVA SOLUTIONS INC COMMON 682129101 43 7,600 X 123 900 6,700
ONEMAIN.COM INC COMMON 68267P109 12 1,100 X 123 1,100
OPENTV CORP COMMON 683799100 124 1,050 X 123 1,050
OPPENHEIMER MAIN ST GR & INC MUT FND 68380D801 56 1,309 X 123 1,309
ORACLE CORP COMMON 68389X105 56,832 728,030 X 123 316,910 10,900 400,220
OPPENHEIMER GLOBAL FD CL A MUT FND 683924104 32 457 X 123 457
ORBITAL SCIENCES CORP COMMON 685564106 122 8,100 X 123 8,100
ORGANOGENESISINC COMMON 685906109 48 4,000 X 123 4,000
ORTEL CORP COMMON 68749W102 15,184 80,900 X 123 78,200 2,700
OASHKOSH TRUCK CORP COMMON 688239201 12,630 406,600 X 123 339,300 9,900 57,400
OWENS CORNING CAP LLC CONV PFD CV PFD 690733209 29,832 972,509 X 123 905,475 31,948 35,086
OWENS-ILLINOIS INC COMMON 690768403 6,624 392,510 X 123 112,300 280,210
OWENS-ILLINOIS 4.75% CVT PFD CV PFD 690768502 5,269 184,790 X 123 154,419 18,982 11,389
P-COM INC COMMON 693262107 9,755 527,300 X 123 413,600 8,100 105,600
PECO ENERGY CO COMMON 693304107 3,643 98,800 X 123 98,300 500
P G & E CORP COMMON 69331C108 130 6,203 X 123 800 5,403
PE CORP -PE BIOSYSTEMS COMMON 69332S102 27,985 290,000 X 123 105,300 184,700
PE CORP -CELERA GENOMICS COMMON 69332S201 37 400 X 123 400
P F CHANGS CHINA BISTRO INC COMMON 69333Y108 17 500 X 123 500
PIMCO INNOVATION FD CL B MUT FND 693389439 81 1,022 X 123 1,022
PIMCO ADVISORS HOLDINGS LP COMMON 69338P102 131 3,423 X 123 3,423
PIMCO HIGH YIELD FUND C MUT FND 693390353 95 9,325 X 123 9,325
PMC SIERRA INC COMMON 69344F106 25,196 123,700 X 123 57,500 1,000 65,200
THE PMI GROUP COMMON 69344M101 2,234 47,100 X 123 33,500 13,600
PNC FINANCIAL SEVICES COMMON 693475105 95,974 2,129,790 X 123 1,179,380 2,200 948,210
PPG INDS COMMON 693506107 562 10,750 X 123 8,550 2,200
PPL CORPORATION COMMON 69351T106 21 1,000 X 123 1,000
PRI AUTOMATION INC COMMON 69357H106 37,207 608,700 X 123 406,900 63,800 138,000
PAC-WEST TELECOMM INC COMMON 69371Y101 3 100 X 123 100
PACIFIC GULF PROPERTIES INC COMMON 694396102 8,109 413,200 X 123 331,500 9,300 72,400
PACIFIC SUNWEAR OF CALIFORNIA COMMON 694873100 20,775 539,600 X 123 193,900 112,800 232,900
PACTIV CORP COMMON 695257105 2,075 238,895 X 123 56,300 182,595
PAINE WEBBER GRP INC COMMON 695629105 1,926 43,775 X 123 13,325 30,450
PW EQUITY PTNRS LTD L MUT FND 69574C104 12 1,000 X 123 1,000
PW EQUITY PTNRS LTD 2 MUT FND 69574C203 14 57,000 X 123 7,000 50,000
PAINEWEBBER GEODYNE ENERGY IIE MUT FND 695923862 8 500 X 123 500
PW GEODYNE ENERGY PTNR 11C MUT FND 695923888 14 750 X 123 750
PAIRGAIN TECH INC COMMON 695934109 23,387 1,251,500 X 123 1,007,200 25,900 218,400
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 21 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
PALL CORP COMMON 696429307 812 36,200 X 123 20,700 15,500
PALM INC COMMON 696642107 188 4,200 X 123 3,400 800
PARAMETRIC TECH CORP COMMON 699173100 3,237 153,700 X 123 112,000 41,700
PAREXEL INTERNATIONAL CORP COMMON 699462107 182 19,300 X 123 19,300
PARK ELECTROCHEM SUB DEB CONV CV BND 700416AB6 37,883 1,069,000 X 123 919,550 117,213 32,237
PARK PLACE ENTERTAINMENT COMMON 700690100 2,340 202,400 X 123 151,500 50,900
PARKER HANNIFIN COMMON 701094104 2,871 69,500 X 123 50,200 19,300
PARTICIPATING DEV FD 86 LP MUT FND 702117102 2 200 X 123 200
PATHOGENESIS CORP COMMON 70321E104 8,470 372,300 X 123 312,100 8,800 51,400
PATTERSON ENERGY INC COMMON 703414102 47,514 1,496,500 X 123 1,336,200 8,000 152,300
PAYCHEX INC COMMON 704326107 225 4,300 X 123 300 4,000
PEGASUS COMMUNICATIONS CORP COMMON 705904100 1,309 9,300 X 123 9,300
PENN TRAFFIC CO WTS EXP 6/7 5 WTS 707832119 58 45,124 X 123 45,124
PENN TRAFFIC CO COMMON 707832200 1,019 148,195 X 123 148,195
PENNEY JC CO INC COMMON 708160106 36 2,400 X 123 500 1,900
PENTAIR INC COMMON 709631105 13,691 369,410 X 123 295,900 6,700 66,810
PENTEGRA DENTAL GROUP COMMON 709637102 31 20,600 X 123 2,300 18,300
PEOPLES ENERGY CORP COMMON 711030106 28 1,033 X 123 1,033
PEPSI BOTTLING GROUP INC COMMON 713409100 11,146 557,300 X 123 486,100 71,200
PEPSICO INC COMMON 713448108 11,805 338,484 X 123 86,110 16,700 235,674
PER SE TECHNOLOGIES INC COMMON 713569309 4,451 757,544 X 123 604,593 17,167 135,784
PEREGRINE SYSTEMS INC COMMON 71366Q101 3,179 47,400 X 123 47,400
PERICOM SEMICONDUCTOR CORP COMMON 713831105 13,319 373,200 X 123 349,200 24,000
PHARMACYCLICS INC COMMON 716933106 16,057 288,350 X 123 264,850 23,500
PHARMACIA & UPJOHN INC COMMON 716941109 55,159 927,046 X 123 573,926 1,200 351,920
PFIZER INC COMMON 717081103 83,598 2,286,432 X 123 899,803 28,300 1,358,329
PHARMACIA CORP COMMON 71713U102 16,241 315,670 X 123 146,070 169,600
PHELPS DODGE COMMON 717265102 46 969 X 123 500 469
PHILADELPHIA SUBURBAN CORP COMMON 718009608 18 1,000 X 123 1,000
PHILIP MORRIS COS INC COMMON 718154107 26,633 1,260,737 X 123 832,525 428,212
PHILIPPINE LONG DIST TEL CNV P CV PFD 718252703 6,975 287,054,262 X 123 203,459,862 32,547,000 51,047,400
PHILLIPS PETE COMMON 718507106 10,766 232,778 X 123 8,500 224,278
PHOENIX TECHNOLOGIES LTD COMMON 719153108 65 3,100 X 123 3,100
PHONE.COM INC COMMON 71920Q100 1,533 9,400 X 123 8,400 800 200
PHOTON DYNAMICS COMMON 719364101 8,432 122,200 X 123 46,700 27,000 48,500
PHOTRONICS INC COMMON 719405102 141 4,000 X 123 4,000
PHYCOR INC SUB DEB CONV CV BND 71940FAB6 24,886 1,560,134 X 123 1,409,525 101,475 49,134
PIER 1 IMPORTS INC DEL COMMON 720279108 9,091 886,900 X 123 737,100 22,300 127,500
PILGRAM MID CAP GROWTH FD MUT FND 72146E558 543 18,365 X 123 18,365
PILGRIM PRIME RATE TRUST MUT FND 72146W103 8 1,000 X 123 1,000
PINNACLE ENTERTAINMENT INC COMMON 723456109 10 475 X 123 475
PINNACLE HOLDINGS INC COMMON 72346N101 14,873 276,700 X 123 98,100 62,200 116,400
PINNACLE WEST CAPITAL CORP COMMON 723484101 1,063 37,700 X 123 18,200 19,500
PIONEER STD ELECTRS COMMON 723877106 142 9,003 X 123 9,003
PITNEY BOWES COMMON 724479100 675 15,100 X 123 5,200 9,900
PLAINS RESOURCES INC COMMON 726540503 194 15,500 X 123 1,800 13,700
POGO PRODUCING CO CVT SUB NTS CV BND 730448AE7 14,792 405,357 X 123 366,836 33,780 4,741
POLAROID CORP COMMON 731095105 161 6,778 X 123 800 5,978
POLICY MGMT SYSTEMS CP COMMON 731108106 324 27,000 X 123 27,000
POLYCOM INC COMMON 73172K104 21,816 275,500 X 123 117,100 55,100 103,300
POLYMEDICA CORP COMMON 731738100 45,302 771,100 X 123 721,500 49,600
PORTAL SOFTWARE COMMON 736126103 1,076 18,900 X 123 17,400 1,500
POST PROPERTIES INC COMMON 737464107 173 4,300 X 123 4,300
POWERWAVE TECHNOLOGIES INC COMMON 739363109 54,125 433,000 X 123 303,200 40,200 89,600
PRAXAIR INC COMMON 74005P104 81,608 1,960,553 X 123 1,250,556 12,325 697,672
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 22 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
PREFERRED INCOME FD INC MUT FND 74037G106 5 395 X 123 395
PREMIER FARNELL PLC CVT PFD CV PFD 74050U206 24 2,590 X 123 2,590
PRENTISS PROPERTIES TRUST COMMON 740706106 9,864 442,100 X 123 351,900 10,600 79,600
PRESTON CORP SUB DEB CONV CV BND 741130AA6 8,181 1,730,554 X 123 1,151,482 483,882 95,190
PRIMEX TECHNOLOGIES INC COMMON 741597108 669 31,400 X 123 22,000 9,400
PRIMUS KNOWLEDGE SOLUTIONS COMMON 74163Q100 7,800 90,700 X 123 33,550 19,900 37,250
PRIMUS TELECOM GRP COMMON 741929103 2,362 45,700 X 123 32,100 13,600
PRIDE INTERNATIONAL INC COMMON 741932107 14,882 650,600 X 123 246,700 144,200 259,700
PRIDE INTL INC SUB DEB CONV CV BND 741932AB3 28,819 1,000,065 X 123 781,223 201,737 17,105
PRINCIPAL PRES -PSE TECH 100 MUT FND 74252B832 119 2,720 X 123 2,720
PRIORITY HEALTHCARE CORP CL B COMMON 74264T102 8,181 162,800 X 123 62,500 35,900 64,400
PROCTER & GAMBLE COMMON 742718109 14,361 254,173 X 123 102,462 900 150,811
PROGRESS SOFTWARE CORP COMMON 743312100 2,920 124,600 X 123 106,400 3,500 14,700
PROGRESSIVE CORP COMMON 743315103 8 100 X 123 100
PROTECTIVE LIFE CORP COMMON 743674103 14,691 462,700 X 123 385,000 10,500 67,200
PROTEIN DESIGN LABS INC COMMON 74369L103 40 500 X 123 500
PROVIDENT BANKSHARES CORP COMMON 743859100 10 630 X 123 630
PROVIDIAN FINANCIAL CORP COMMON 74406A102 20,153 232,651 X 123 145,151 87,500
PROXICOM INC COMMON 744282104 4 100 X 123 100
PUB SVC ENTERPRISE GROUP INC COMMON 744573106 56 1,900 X 123 1,500 400
PUBLIC STORAGE INC COMMON 74460D109 6 300 X 123 300
PUTNAM AMERICAN GOVT FD CL A MUT FND 74644B102 6 750 X 123 750
PUTNAM GRWTH & INC FD CL B MUT FND 746761204 122 6,758 X 123 6,758
PUTNAM NEW OPPORTUNITIES -B MUT FND 746916204 69 700 X 123 700
QLT PHOTOTHERAPEUTICS INC COMMON 746927102 1,155 20,900 X 123 20,900
PUTNAM INTL GROWTH FD B MUT FND 746932201 424 13,733 X 123 13,733
QMS INC COMMON 74726G102 4 1,000 X 123 1,000
QLOGIC CORP COMMON 747277101 3,035 22,400 X 123 20,900 1,100 400
QUAKER OATS COMMON 747402105 1,505 24,820 X 123 13,900 10,920
QUALCOMM INC COMMON 747525103 4,591 30,750 X 123 2,900 900 26,950
QUANTUM CORP - DLT & STORAGE COMMON 747906204 39 3,254 X 123 2,754 500
QUANTUM CORP SUB CONV NTS CV BND 747906AC9 38,850 1,041,791 X 123 950,156 68,430 23,206
QUEST DIAGNOSTICS INC COMMON 74834L100 7 187 X 123 187
QUESTAR CORP COMMON 748356102 117 6,300 X 123 6,300
QWEST COMMUNICATIONS INTL COMMON 749121109 88 1,825 X 123 200 1,625
R & B FALCON CORP COMMON 74912E101 1,685 85,600 X 123 54,200 31,400
R & B FALCON WTS 144A WTS 74912E119 5,162 14,750 X 123 13,250 1,250 250
DRESDNER RCM BIOTECHNOLOGY FUN MUT FND 74935P604 300 11,641 X 123 11,641
DRESDNER RCM GLBL TECH FD MUT FND 74935P703 50 669 X 123 669
R H DONNELLEY COMMON 74955W307 21,843 1,284,860 X 123 1,042,360 27,500 215,000
RGS ENERGY GROUP INC COMMON 74956K104 172 8,100 X 123 900 7,200
RPM INC OHIO COMMON 749685103 75 6,863 X 123 6,863
RF MICRO DEVICES INC COMMON 749941100 2,419 18,000 X 123 18,000
RADIAN GROUP INC COMMON 750236101 10,235 214,900 X 123 172,300 4,700 37,900
RADIO ONE INC COMMON 75040P108 37,330 560,300 X 123 404,500 47,700 108,100
RALSTON-RALSTON PURINA GRP COMMON 751277302 14 500 X 123 500
RAMCO GERSHENSON PPTYS COMMON 751452202 11 789 X 123 789
RAYTHEON CO CL A COMMON 755111309 2,576 136,933 X 123 135,984 949
RAYTHEON CO CL B COMMON 755111408 2,148 121,041 X 123 75,300 45,741
READERS DIGEST ASSN CL A COMMON 755267101 3,633 102,700 X 123 75,300 27,400
REALNETWORKS INC COMMON 75605L104 222 3,900 X 123 1,600 2,300
REDBACK NETWORKS COMMON 757209101 1,710 5,700 X 123 5,200 500
REGAL BELOIT COMMON 758750103 369 21,100 X 123 14,300 6,800
REGAL COMMUNICATIONS CORP COMMON 758756308 7,000 X 123 7,000
REGENT COMMUNICATIONS INC COMMON 758865109 10,649 860,529 X 123 707,500 18,200 134,829
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 23 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
REGIONS FINANCIAL CORP COMMON 758940100 9 400 X 123 400
REINSURANCE GRP OF AMERICA COMMON 759351109 619 26,000 X 123 21,600 4,400
RELIANT ENERGY INC COMMON 75952J108 238 10,100 X 123 5,300 4,800
RELIASTER FINANCIAL CORP COMMON 75952U103 61,476 1,814,791 X 123 1,034,465 1,700 778,626
REMEC INC COMMON 759543101 19,271 381,600 X 123 306,400 9,000 66,200
RENAL CARE GROUP INC COMMON 759930100 12,950 597,100 X 123 492,300 15,600 89,200
REPSOL ADR ADR 76026T205 617 28,950 X 123 16,950 12,000
REPUBLIC BANCORP COMMON 760282103 37 3,918 X 123 3,918
REPUBLIC SERVICES INC COMMON 760759100 5,399 493,600 X 123 405,800 87,800
RESEARCH IN MOTION COMMON 760975102 2,173 20,400 X 123 19,500 900
RESMED INC COMMON 761152107 143 2,000 X 123 2,000
RESPIRONICS INC COMMON 761230101 13,146 914,500 X 123 744,700 22,200 147,600
REUTERS HLDGS PLC ADS ADR 76132M102 4,212 35,287 X 123 4,332 30,955
REYNOLDS METALS COMMON 761763101 87 1,300 X 123 800 500
RJR TOBACCO HLDGS COMMON 76182K105 113 6,632 X 123 1 6,631
RICHARDSON ELEC SUB DEB CONV CV BND 763165AB3 14,571 957,283 X 123 690,254 255,439 11,589
RIO TINTO PLC-SPON ADR ADR 767202104 17 300 X 123 300
ROADWAY EXPRESS INC COMMON 769742107 4 175 X 123 175
ROBOTIC VISIONS SYSTEMS INC COMMON 771074101 6,118 382,400 X 123 290,300 19,600 72,500
ROCHESTER FUND MUNICIPAL MUT FND 771362100 48 2,829 X 123 2,829
ROCKEFELLER CTR PPTYS EURO CV CV BND 773102AA6 84,487 23,163,574 X 123 19,604,288 3,305,956 253,330
ROCKWELL INTL (NEW) COMMON 773903109 554 13,260 X 123 1,600 11,660
ROGERS COMM INC CONV CV BND 775109AE1 90,810 3,052,291 X 123 2,863,267 89,357 99,667
ROHM & HAAS COMMON 775371107 32,291 723,609 X 123 439,267 21,500 262,842
ROLLINS INC COMMON 775711104 55 3,700 X 123 3,700
ROSS STORES INC COMMON 778296103 197 8,200 X 123 8,200
ROWAN COS COMMON 779382100 5,823 197,800 X 123 53,200 144,600
ROYAL DUTCH PETROLEUM CO COMMON 780257804 11,511 199,104 X 123 87,414 111,690
RUBY TUESDAY INC COMMON 781182100 6,285 359,150 X 123 288,350 8,100 62,700
RUSS BERRIE & CO INC COMMON 782233100 28 1,500 X 123 1,500
RUSSELL CORP COMMON 782352108 7,593 530,500 X 123 427,600 17,900 85,000
RYDER SYSTEM COMMON 783549108 6,375 281,000 X 123 274,400 6,600
SBC COMMUNICATIONS INC COMMON 78387G103 215,857 5,124,203 X 123 2,971,577 28,457 2,124,169
SBA COMMUNICATIONS CORP COMMON 78388J106 22,673 515,300 X 123 477,500 37,800
SCI SYSTEMS INC COMMON 783890106 18,802 349,800 X 123 272,000 5,300 72,500
SDL INC COMMON 784076101 40,340 189,500 X 123 85,500 40,800 63,200
SK TELECOM CO LTD -ADR ADR 78440P108 100 2,600 X 123 2,600
SLM HOLDING CORP COMMON 78442A109 77 2,300 X 123 300 2,000
S & P 500 DEPOSITARY RCPT COMMON 78462F103 815 5,420 X 123 4,520 900
SPX CORP COMMON 784635104 17,671 155,097 X 123 125,400 3,100 26,597
S1 CORPORATION COMMON 78463B101 12,836 149,800 X 123 63,200 30,800 55,800
SSI LTD 144A SP GDR COMMON 784663106 135 10,000 X 123 10,000
S3 INC SUB DEB CONV CV BND 784849AC5 31,914 1,467,793 X 123 1,236,003 187,565 44,225
SABRE HOLDINGS CORP COMMON 785905100 3,176 87,006 X 123 76,094 10,912
SAFECO CO COMMON 786429100 16 600 X 123 600
SAFEGUARD SCIENTIFIC COMMON 786449108 131 1,900 X 123 400 1,500
SAFETY-KLEEN CORP COMMON 78648R203 13 10,200 X 123 1,200 9,000
SAFEWAY INC COMMON 786514208 857 18,950 X 123 11,550 7,400
ST JUDE MEDICAL INC COMMON 790849103 10 369 X 123 369
ST PAUL COS COMMON 792860108 4,053 118,783 X 123 44,300 74,483
SALOMON BROTHERS FUND MUT FND 795477108 118 5,961 X 123 1,802 4,159
SANDISK CORP COMMON 80004C101 3,075 25,100 X 123 23,800 1,300
SANMINA CORP COMMON 800907107 649 9,600 X 123 9,600
SAPPI LTD -SPONS ADR ADR 803069202 10,097 1,272,100 X 123 580,250 10,000 681,850
SARA LEE COMMON 803111103 70,170 3,898,359 X 123 2,003,664 45,000 1,849,695
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 24 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
SATYAM INFOWAY LTD ADR ADR 804099109 75 1,400 X 123 1,400
SCANA CORP COMMON 80589M102 113 4,604 X 123 4,100 504
SCHERING-PLOUGH COMMON 806605101 44,019 1,185,693 X 123 630,345 300 555,048
SCHLUMBERGER LTD COMMON 806857108 66,137 864,535 X 123 371,314 5,800 487,421
SCHOLASTIC CORP CVT 144A CV BND 807066AA3 13,784 188,515 X 123 176,155 12,360
SCHOOL SPECIALTY INC COMMON 807863105 5,244 243,900 X 123 177,100 12,000 54,800
SCHULER HOMES SUB CONV DEB CV BND 808188AA4 25,018 1,459,933 X 123 1,214,168 188,504 57,261
SCHWAB CHARLES CORP COMMON 808513105 37,191 654,624 X 123 268,500 386,124
SCIENTIFIC ATL COMMON 808655104 987 15,600 X 123 11,400 4,200
SCIOS INC COMMON 808905103 104 20,000 X 123 20,000
SCORE BOARD INC COMMON 809173206 2 X 123 2
SCOTTISH POWER PLC ADR ADR 81013T705 309 9,742 X 123 1,392 8,350
SCOTTS COMPANY COMMON 810186106 16,015 381,300 X 123 313,000 10,100 58,200
SCUDDER LARGE COMPANY VALUE FD MUT FND 81114T109 98 3,622 X 123 3,622
SCUDDER GREATER EURO GRWTH FD MUT FND 811165406 49 1,298 X 123 1,298
SCUDDER EMRG MRKS GRWITH MUT FND 811165505 24 1,601 X 123 1,601
SCUDDER INCOME FUND MUT FND 811192103 134 10,891 X 123 10,891
SCUDDER DEVELOPMENT FUND MUT FND 811196104 9 189 X 123 189
SEAGATE TECHNOLOGY COMMON 811804103 1,371 22,200 X 123 15,700 6,500
SEAGRAM CO LTD COMMON 811850106 239 4,025 X 123 4,025
SEALED AIR CORP COMMON 81211K100 19,233 354,120 X 123 270,260 11,250 72,610
SEALED AIR CORP CONV PFD $2.00 CV PFD 81211K209 224 3,810 X 123 503 3,307
SEARS ROEBUCK & CO COMMON 812387108 298 9,722 X 123 3,000 6,722
SECURITY NATIONAL CORP COMMON 814784104 1,011 16,575 X 123 16,575
SEGUE SOFTWARE INC COMMON 815807102 288 23,400 X 123 23,400
SELIGMAN COMM & INFO FD A MUT FND 816333108 125 2,277 X 123 2,277
SENIOR HOUSING PROP TR COMMON 81721M109 11 1,040 X 123 1,000 40
SENSORMATIC ELECTRONICS CORP COMMON 817265101 9,280 413,600 X 123 335,500 6,100 72,000
SERVICEMASTER CO COMMON 81760N109 76 6,749 X 123 6,749
SHELL TRNSPORT & TRADING ADR ADR 822703609 29 600 X 123 600
SHERWIN WILLIAMS COMMON 824348106 2,659 120,200 X 123 82,900 37,300
SHOPNOW.COM INC COMMON 82508R105 556 38,000 X 123 26,200 11,800
SIEBEL SYSTEMS INC COMMON 826170102 55,110 461,415 X 123 248,100 213,315
SIEMENS AG ADR NEW ADR 826197402 202 1,400 X 123 1,400
SIENA HLDGS INC COMMON 826203101 407 X 123 407
SIGMA ALDRICH COMMON 826552101 22 800 X 123 800
SIG CORP INC COMMON 826912107 12,075 473,528 X 123 394,128 12,300 67,100
SILICON LABS INC COMMON 826919102 11,532 130,300 X 123 49,500 29,000 51,800
SILICON GRAPHICS SR CONV NTS CV BND 827056AC6 18,482 682,069 X 123 642,069 40,000
SILICON STORAGE TECH INC COMMON 827057100 26,529 359,100 X 123 135,500 79,400 144,200
SILICON VALLEY BANCSHARES COMMON 827064106 38,295 532,800 X 123 496,050 36,750
SILKNET SOFTWARE INC COMMON 827094103 7,270 70,200 X 123 25,900 16,400 27,900
SIMON PROPERTY GROUP INC COMMON 828806109 6,828 292,908 X 123 107,300 11,000 174,608
SIZELER PROP INV SUB CONV DEB CV BND 830137AA3 5,763 498,077 X 123 355,769 76,923 65,385
SMITH BARNEY LARGE CAP GROWTH MUT FND 83181J816 114 4,278 X 123 4,278
SMITH A.O. CORP COMMON 831865209 388 21,550 X 123 14,750 6,800
SMITHKLINE BEECHAM SPONS ADR ADR 832378301 8,081 122,328 X 123 65,150 57,178
SMURFIT-STONE CONTAINER CORP COMMON 832727101 1,208 71,300 X 123 43,700 27,600
SOFTNET SYSTEMS COMMON 833964109 18 600 X 123 600
SOGEN INTL FUND MUT FND 834062101 36 1,439 X 123 1,439
SOLECTRON CORP COMMON 834182107 17,731 441,900 X 123 159,200 15,800 266,900
SOLUTIA INC COMMON 834376105 10,748 803,575 X 123 769,050 22,200 12,325
SONIC CORP COMMON 835451105 12,619 463,100 X 123 385,600 11,500 66,000
SONY CORP ADR ADR 835699307 119 425 X 123 425
SOUND WORKS INTL INC COMMON 836112102 4 10,000 X 123 10,000
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 25 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
SOUTH AFRICAN BREWER SP ADR ADR 836216309 9 X 123 9
SOUTHERN CO COMMON 842587107 3,016 138,670 X 123 74,400 64,270
SOUTHTRUST CORP COMMON 844730101 15 600 X 123 300 300
SOUTHWEST AIRLINES COMMON 844741108 3,325 159,737 X 123 124,425 300 35,012
SPARTECH CORP COMMON 847220209 10,457 304,200 X 123 249,900 7,200 47,100
SPEEDFAM-IPEC INC COMMON 847705100 7,288 366,700 X 123 308,000 8,700 50,000
SPIEKER PROPERTIES INC COMMON 848497103 2,002 45,000 X 123 32,500 12,500
SPRINGS INDUSTRIES INC CL A COMMON 851783100 7,292 191,900 X 123 158,900 3,600 29,400
SPRINT CORP COMMON 852061100 64,098 1,013,410 X 123 566,465 1,000 445,945
SPRINT CORP (PCS GROUP) COMMON 852061506 5,753 87,834 X 123 20,600 67,234
STANCORP FINANCIAL GROUP COMMON 852891100 1,317 48,100 X 123 33,300 14,800
STANDARD MICROSYSTEMS COMMON 853626109 103 7,100 X 123 7,100
STANLEY WORKS COMMON 854616109 264 10,000 X 123 5,000 5,000
STAPLES INC COMMON 855030102 2,196 109,800 X 123 36,700 9,750 63,350
STARBUCKS CORP COMMON 855244109 538 12,000 X 123 1,400 10,600
STARMEDIA NETWORK INC COMMON 855546107 120 4,000 X 123 4,000
STATE STREET CORP COMMON 857477103 78 800 X 123 200 600
STATE STR INVT CORP MUT FND 857483101 224 15,147 X 123 15,147
STATEN ISLAND BANCORP INC COMMON 857550107 495 28,900 X 123 20,500 8,400
STEARNS & LEHMAN INC COMMON 857890107 3 1,000 X 123 1,000
STEPAN CO COMMON 858586100 52 2,400 X 123 2,400
STERLING BANCSHARES INC TX COMMON 858907108 221 23,100 X 123 10,000 13,100
STERIS CORP COMMON 859152100 4 400 X 123 400
STERLING SOFTWARE INC COMMON 859547101 124 3,800 X 123 3,800
STEWART INFO SVCS COMMON 860372101 13 800 X 123 800
STMICROELECTRONICS NV-NY SHS COMMON 861012102 374 2,000 X 123 1,100 900
STRATTEC SECURITY CORP COMMON 863111100 14 418 X 123 418
STRYKER CORP COMMON 863667101 9,149 131,165 X 123 62,015 100 69,050
SUN COMMUNITIES INC COMMON 866674104 1,117 38,700 X 123 27,400 11,300
SUN MICROSYSTEMS COMMON 866810104 60,505 645,710 X 123 297,890 1,500 346,320
SUNGARD DATA SYSTEMS COMMON 867363103 50,077 1,326,535 X 123 1,048,310 49,000 229,225
SUNOCO INC COMMON 86764P109 186 6,800 X 123 1,000 5,800
SUNTRUST BANK COMMON 867914103 2,099 36,340 X 123 8,340 28,000
SUPERVALU INC COMMON 868536103 114 6,000 X 123 1,200 4,800
SYBASE INC COMMON 871130100 13 624 X 123 624
SYBRON INTL COMMON 87114F106 8,323 287,000 X 123 238,400 48,600
SYCAMORE NETWORKS INC COMMON 871206108 142 1,100 X 123 1,100
SYMANTEC CORP COMMON 871503108 6,104 81,250 X 123 46,800 34,450
SYSCO CORP COMMON 871829107 2,406 66,600 X 123 43,400 23,200
TCF FINANCIAL CORP COMMON 872275102 952 40,000 X 123 40,000
TD WATERHOUSE GROUP COMMON 872362108 12 500 X 123 500
TECO ENERGY INC COMMON 872375100 287 14,765 X 123 11,520 3,245
TEPPCO PARTNERS L P COMMON 872384102 62 2,800 X 123 2,800
TJX COMPANIES INC COMMON 872540109 76,509 3,448,292 X 123 2,211,592 2,600 1,234,100
TRW INC COMMON 872649108 608 10,400 X 123 10,400
TAIWAN SEMICONDUCTOR ADR ADR 874039100 123 2,150 X 123 2,150
TALBOTS INC COMMON 874161102 21,719 368,900 X 123 140,950 81,400 146,550
TALK.COM COMMON 874264104 11,715 732,200 X 123 607,000 16,900 108,300
TANDY CORP COMMON 875382103 5,288 104,200 X 123 34,600 69,600
TANKNOLOGY-NDE INTL INC COMMON 87583E101 2,000 X 123 2,000
TARGET CORP COMMON 87612E106 18,340 245,355 X 123 65,548 179,807
TECHNE CORP COMMON 878377100 2,995 43,400 X 123 600 42,800
TEKELEC COMMON 879101103 11,613 312,800 X 123 253,200 6,900 52,700
TEKTRONIX COMMON 879131100 14,134 252,400 X 123 201,800 4,800 45,800
TELECOM NEW ZEALAND -SPONS ADR ADR 879278208 37 1,000 X 123 1,000
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 26 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
TELEBRAS SPON ADR ADR 879287100 1,410 X 123 710 700
TELEBRAS SPON ADR PFD BLOCK ADR 879287308 105 700 X 123 700
TELECORP PCS INC COMMON 879299105 1,397 27,000 X 123 27,000
TELEFLEX INC COMMON 879369106 1,679 47,450 X 123 20,450 27,000
TELEFONICA DE ESPANA ADS COMMON 879382208 24 318 X 123 318
TELEFONOS DE MEXICO S P ADR L ADR 879403780 253 3,800 X 123 3,800
TELLABS INC COMMON 879664100 683 10,850 X 123 1,850 9,000
TELXON CORP COMMON 879700102 4,772 271,700 X 123 200,800 12,700 58,200
TELXON CORP SUB CONV NTS CV BND 879700AC6 14,660 619,854 X 123 423,490 163,636 32,727
TEMPLE INLAND INC COMMON 879868107 14,644 293,974 X 123 215,350 78,624
TEMPLETON DEV MKTS TR CL I MUT FND 88018W104 296 20,531 X 123 20,531
TEMPLETON EMERG MKTS INC FD MUT FND 880192109 22 2,281 X 123 2,281
TEMPLETON FOREIGN FD MUT FND 880196209 739 69,750 X 123 69,750
TENET HEALTHCARE CORP COMMON 88033G100 162,884 7,005,756 X 123 4,319,496 56,300 2,629,960
TENET HEALTHCARE SUB NTS CVT CV BND 88033GAD2 18,336 587,204 X 123 531,433 45,395 10,376
TENNECO AUTOMOTIVE COMMON 880349105 345 43,499 X 123 6,980 36,519
TERADYNE INC COMMON 880770102 2,862 34,900 X 123 24,200 10,700
TERAYON COMMUNICATIONS SYS COMMON 880775101 102 500 X 123 500
TERRAMAR CORP COMMON 881027106 133 X 123 133
TEVA PHARMACEUTICALS -SP ADR COMMON 881624209 2,175 58,300 X 123 43,000 15,300
TETRA TECH INC COMMON 88162G103 12,969 546,075 X 123 450,325 12,775 82,975
TEXACO INC COMMON 881694103 65,421 1,217,126 X 123 649,152 1,300 566,674
TEXAS INSTRUMENTS COMMON 882508104 88,801 555,005 X 123 222,135 6,200 326,670
TEXAS UTILS COMMON 882848104 48,770 1,642,794 X 123 942,550 36,000 664,244
TEXTRON INC COMMON 883203101 641 10,536 X 123 3,300 7,236
TEXTRON INC CV PFD A CV PFD 883203200 125 2,108 X 123 2,108
THERAGENICS CORP COMMON 883375107 6,844 511,700 X 123 402,500 13,400 95,800
THERMO ELECTRON CORP COMMON 883556102 145 7,100 X 123 7,100
THERMO ELECTRON DEB CONV 144A CV BND 883556AF9 178,572 5,191,344 X 123 4,987,244 19,841 184,259
THERMO INSTRUMENT 144A CVT DEB CV BND 883559AC0 34,807 1,104,035 X 123 1,048,891 29,023 26,121
THERMO TERRATECH SUB CONV 144A CV BND 883598AA2 24,461 1,738,365 X 1236 1,615,346 123,019
THERMEDICS INC SUB CONV CV BND 883901AD2 39 3,148 X 123 3,148
THOMAS & BETTS COMMON 884315102 1,140 40,357 X 123 26,300 14,057
3COM COMMON 885535104 33,603 604,100 X 123 326,350 25,500 252,250
3DO COMPANY COMMON 88553W105 4,551 469,800 X 123 380,100 10,200 79,500
THREE FIVE SYSTEMS INC COMMON 88554L108 17,097 284,950 X 123 266,650 18,300
TIBCO SOFTWARE INC COMMON 88632Q103 2,103 25,800 X 123 24,800 1,000
TIDEWATER COMMON 886423102 14,293 449,300 X 123 378,400 7,900 63,000
TIFFANY & CO COMMON 886547108 2,994 35,800 X 123 33,400 2,400
TIME WARNER INC COMMON 887315109 55,318 553,177 X 123 257,475 2,100 293,602
TITAN INTL INC COMMON 88830M102 7 1,000 X 123 1,000
TOO INC COMMON 890333107 10,162 321,956 X 123 301,156 20,800
TOOTSIE ROLL INDS COMMON 890516107 1 X 123 1
TORCHMARK CORP COMMON 891027104 276 11,926 X 123 2,000 9,926
TOSCO CORP COMMON 891490302 4,619 150,825 X 123 113,000 8,300 29,525
TOWER AUTOMOTIVE INC COMMON 891707101 13,044 796,600 X 123 653,900 14,500 128,200
TOYOTA MOTOR CORP UNSP ADR COMMON 892331307 48 457 X 123 457
TOYS R US COMMON 892335100 13 900 X 123 600 300
TRANS INDS INC COMMON 893239103 30 5,672 X 123 5,672
TRANSWITCH CORP COMMON 894065101 72,257 751,700 X 123 547,500 63,650 140,550
TREDEGAR INDS COMMON 894650100 1,940 72,000 X 123 72,000
TRI CONTL CORP COMMON 895436103 1,140 44,698 X 123 36,478 8,220
TRIAD HOSPITALS INC COMMON 89579K109 1 34 X 123 34
TRIGEN ENERGY CORP COMMON 895930105 86 3,700 X 123 3,700
TRICON GLOBAL RESTAURANTS COMMON 895953107 57 1,820 X 123 300 1,520
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 27 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
TRIBUNE CO COMMON 896047107 31,254 854,816 X 123 44,700 810,116
TRIGON HEALTHCARE INC COMMON 89618L100 14,868 415,900 X 123 325,800 7,400 82,700
TRINITY INDS COMMON 896522109 81 3,400 X 123 3,400
TRUE NORTH COMMUNICATIONS COMMON 897844106 1,641 41,750 X 123 38,600 3,150
TULARIK INC COMMON 899165104 16,330 528,900 X 123 386,100 51,200 91,600
TURNSTONE SYSTEMS INC COMMON 900423104 10,718 93,200 X 123 34,800 21,100 37,300
TUT SYSTEMS INC COMMON 901103101 15,975 268,200 X 123 251,100 17,100
TWEETER HOME ENTERTAINMENT COMMON 901167106 31,869 720,200 X 123 673,850 46,350
TYCO INTERNATIONAL LTD COMMON 902124106 84,418 1,684,156 X 123 945,376 4,228 734,552
UMB FINANCIAL CORP COMMON 902788108 4 110 X 123 110
USX-MARATHON GRP COM NEW COMMON 902905827 72,240 2,771,782 X 123 1,622,435 3,000 1,146,347
US RESTAURANT PROPERTIES COMMON 902971100 525 40,200 X 123 40,200
U S BANCORP COMMON 902973106 22,882 1,046,050 X 123 867,200 40,100 138,750
USAA INTERNATIONAL MUT FND 903287308 873 36,309 X 123 36,309
U.S. FOODSERVICE COMMON 90331R101 327 12,700 X 123 12,700
ULTRAMAR DIAMOND SHAMROCK CORP COMMON 904000106 213 8,400 X 123 8,400
UNICAPITAL CORP COMMON 90459D108 98 41,200 X 123 4,800 36,400
UNILEVER PLC SPON ADR ADR 904767704 52 2,000 X 123 2,000
UNILEVER NV COMMON 904784709 123 2,563 X 123 2,563
UNICOM CORP COMMON 904911104 88,092 2,413,485 X 123 1,308,330 2,600 1,102,555
UNION CARBIDE COMMON 905581104 893 15,320 X 123 8,700 6,620
UNION PACIFIC COMMON 907818108 236 6,025 X 123 2,725 3,300
UNION PACIFIC RESOURCES GRP COMMON 907834105 7 508 X 123 508
UNION PLANTERS CORP COMMON 908068109 6 200 X 123 200
UNIONBANCAL CORP COMMON 908906100 8 300 X 123 300
UNISYS CORP COMMON 909214108 20,896 813,460 X 123 702,110 19,100 92,250
UNITED HEALTHCARE CORP COMMON 910581107 125 2,100 X 123 300 1,800
UNITED PARCEL SERIVCE CL B COMMON 911312106 265 4,200 X 123 1,700 2,500
UNITED RENTALS INC COMMON 911363109 11,057 641,000 X 123 630,500 10,500
U S WEST INC COMMON 91273H101 54,121 745,205 X 123 313,982 6,850 424,373
UNITED STATIONERS INC COMMON 913004107 13,511 378,600 X 123 308,600 9,400 60,600
UNITED TECHNOLOGIES COMMON 913017109 52,193 826,009 X 123 473,486 7,366 345,157
UNIVERSAL FOODS CORP COMMON 913538104 372 17,400 X 123 9,400 8,000
UNIVERSAL HEALTH SERVICES CL B COMMON 913903100 2,670 54,500 X 123 38,300 16,200
UNIVISION COMMUNICATIONS CL A COMMON 914906102 2,260 20,000 X 123 20,000
UNOCAL CORP COMMON 915289102 2,757 92,670 X 123 58,720 33,950
UNOVA INC COMMON 91529B106 6,391 473,400 X 123 378,800 11,100 83,500
UNUMPROVIDENT CORP COMMON 91529Y106 4,990 294,608 X 123 291,708 2,900
USFREIGHTWAYS CORP COMMON 916906100 1,161 31,000 X 123 21,800 9,200
UROMED CORP SUB CONV NTS CV BND 917274AC6 3,570 107,514 X 123 92,456 12,046 3,012
USWEB CORP COMMON 917327108 171 4,400 X 123 4,400
UTSTARCOM INC COMMON 918076100 293 3,750 X 123 3,750
VALERO ENERGY CORP COMMON 91913Y100 10,879 354,500 X 123 284,400 7,300 62,800
VANGUARD ADMIRAL INTER TERM TR MUT FND 921932307 241 24,089 X 123 24,089
VANGUARD WINDSOR II MUT FND 922018205 250 10,012 X 123 9,260 753
VARIAN SEMICONDUCTOR EQUIPMENT COMMON 922207105 16,523 259,700 X 123 214,700 5,600 39,400
VARIAN MEDICAL SYSTEMS INC COMMON 92220P105 21,371 468,400 X 123 379,300 10,600 78,500
VASTAR RESOURCES INC COMMON 922380100 1,152 15,500 X 123 8,600 6,900
VEECO INSTRUMENTS INC COMMON 922417100 266 3,600 X 123 3,600
VANGUARD INDEX TR 500 PORT MUT FND 922908108 309 2,238 X 123 874 1,365
VENTURE STORES INC COMMON 923275101 13 X 123 13
VERITAS SOFTWARE CORP COMMON 923436109 29,419 224,575 X 123 87,675 800 136,100
VERISIGN INC COMMON 92343E102 6,802 45,500 X 123 18,200 500 26,800
VERITAS DGC INC COMMON 92343P107 9,388 333,800 X 123 277,800 8,400 47,600
VERTICALNET INC COMMON 92532L107 14 100 X 123 100
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 28 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
VIACOM INC COMMON 925524100 17 325 X 123 325
VIACOM INC CL B COMMON 925524308 37 700 X 123 700
VIATEL INC COMMON 925529208 1,069 21,300 X 123 21,300
VIAD CORP COMMON 92552R109 30,741 1,343,890 X 123 1,019,600 34,800 289,490
VIASYSTEMS GROUP INC COMMON 92553H100 3,100 200,000 X 123 149,700 50,300
VIGNETTE CORP COMMON 926734104 224 1,400 X 123 800 600
VIRAGEN INC COMMON 927638106 6 3,000 X 123 3,000
VISHAY INTERTECHNOLOGY INC COMMON 928298108 21,276 382,481 X 123 304,962 7,800 69,719
VISIBLE GENEICS INC COMMON 92829S104 7,311 197,600 X 123 185,000 12,600
VITESSE SEMICONDUCTOR CORP COMMON 928497106 33,428 347,300 X 123 225,250 122,050
VODAFONE AIRTOUCH PLC -SP ADR ADR 92857T107 1,930 34,730 X 123 21,250 13,480
VOICESTREAM WIRELESS CORP COMMON 928615103 32 250 X 123 250
VULCAN MATER COMMON 929160109 2,112 46,100 X 123 34,200 11,900
WPS RESOURCES CORP COMMON 92931B106 91 3,500 X 123 3,500
WABASH NATIONAL CORP COMMON 929566107 2,484 174,300 X 123 125,400 8,500 40,400
WACHOVIA CORP COMMON 929771103 673 9,960 X 123 1,800 8,160
WADDELL & REED FINANCIAL A COMMON 930059100 24 564 X 123 564
WADDELL & REED FINL CL B COMMON 930059209 95 2,430 X 123 2,430
WAL-MART STORES INC COMMON 931142103 36,859 652,364 X 123 349,979 500 301,885
WALGREEN CO COMMON 931422109 39,123 1,519,325 X 123 878,525 3,200 637,600
WALLACE COMP SVCS COMMON 932270101 168 14,200 X 123 14,200
WARNACO GRP INC COMMON 934390105 12 1,000 X 123 1,000
WARNER LAMBERT COMMON 934488107 40,012 409,587 X 123 158,020 251,567
WASHINGTON FEDERAL INC COMMON 938824109 283 14,868 X 123 14,868
WASHINGTON GAS LIGHT CO COMMON 938837101 7,477 275,000 X 123 220,400 5,500 49,100
WASHINGTON MUTUAL INC COMMON 939322103 9,952 375,556 X 123 331,811 43,745
AMERICAN FDS-WASH MUTUAL INV MUT FND 939330106 742 25,443 X 123 25,443
WASHINGTON TRUST BANCORP COMMON 940610108 171 10,680 X 123 10,680
WASTE MANAGEMENT INC COMMON 94106L109 16,640 1,215,723 X 123 1,060,459 62,295 92,969
WATERS CORP COMMON 941848103 4,696 49,300 X 123 35,300 14,000
WATSON PHARM COMMON 942683103 91 2,300 X 123 2,300
WAVE SYSTEMS CORP CL A COMMON 943526103 40 1,000 X 123 1,000
WEATHERFORD INTL COMMON 947074100 895 15,301 X 123 2,470 12,831
WELLPOINT HEALTH NETWORKS COMMON 94973H108 2,271 32,500 X 123 23,500 9,000
WELLS FARGO COMPANY COMMON 949746101 85,533 2,098,959 X 123 1,011,320 2,525 1,085,114
WENDYS INTL COMMON 950590109 21,847 1,082,200 X 123 867,800 19,300 195,100
WEST PHARMACEUTICALS SVCS COMMON 955306105 28 1,124 X 123 1,124
WESTERN DIGITAL CONV 144A CV BND 958102AF2 17,582 1,355,321 X 123 1,114,495 175,113 65,714
WESTERN DIGITAL SUB CNV ZERO C CV BND 958102AH8 10,501 809,477 X 123 727,334 74,675 7,468
WESTERN GAS RES CONV PFD 5.25% CV PFD 958259301 3,012 131,521 X 123 91,643 33,589 6,290
WESTVACO CORP COMMON 961548104 5,045 151,150 X 123 111,600 39,550
WESTWOOD ONE COMMON 961815107 19,383 534,700 X 123 204,800 118,000 211,900
WET SEAL INC CL A COMMON 961840105 76 4,800 X 123 600 4,200
WEYERHAEUSER CO COMMON 962166104 584 10,248 X 123 400 9,848
WHIRLPOOL CORP COMMON 963320106 52 880 X 123 880
WHITMAN CORP COMMON 96647R107 247 17,700 X 123 4,700 13,000
WHOLE FOODS MARKET INC COMMON 966837106 4 100 X 123 100
WILEY JOHN & SONC CL A COMMON 968223206 7,646 424,800 X 123 334,500 9,600 80,700
WILLAMETTE INDS INC COMMON 969133107 46,718 1,164,302 X 123 666,440 1,300 496,562
WILLIAMS COS INC COMMON 969457100 525 11,938 X 123 8,789 3,149
WILLIAMS SONOMA INC COMMON 969904101 31 1,000 X 123 1,000
WILMINGTON TRUST CORP COMMON 971807102 12,696 261,100 X 123 210,700 5,300 45,100
WIND RIVER SYSTEMS COMMON 973149107 5,260 145,100 X 123 119,300 2,900 22,900
WINN DIXIE STORES COMMON 974280109 194 10,000 X 123 10,000
WISCONSIN CENTRAL TRANSPROT COMMON 976592105 419 34,200 X 123 26,300 7,900
</TABLE>
INVESTMENT DISCRETION A = SOLE
B = SHARED-AS DEFINED IN INSTR Y
C = SHARED-OTHER
<PAGE>
PG 29 FORM 13F NAME OF REPORTING MANAGER LOOMIS SAYLES & CO., INC 03/31/00
<TABLE>
<CAPTION>
VOTING AUTHORITY (SHARES)
ITEM 1 ITEM 2 ITEM 3 ITEM 4 ITEM 5 ITEM 6 ITEM 7 ITEM 8
INVEST DISCRETION
NAME OF ISSUER CLASS CUSIP MKT VAL SHARES A B C MANAGERS (A)SOLE (B)SHARED (C)NONE
(000) --------- --------- ---------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
WISCONSIN ENERGY CORP COMMON 976657106 6,530 327,525 X 123 279,900 37,500 10,125
WOLVERINE TUBE INC COMMON 978093102 3 200 X 123 200
WOODHEAD INDS INC COMMON 979438108 126 7,300 X 123 7,300
WORLDWAY CORP SUB CONV DEB CV BND 98155FAA1 18,860 256,124 X 123 246,246 1,672 8,206
WORTHINGTON INDUSTRIES COMMON 981811102 9,783 790,550 X 123 635,900 14,600 140,050
WRIGLEY W M JR COMMON 982526105 1,430 18,612 X 123 12,900 5,712
XILINX INC COMMON 983919101 80,120 967,490 X 123 490,025 2,600 474,865
XEROX CORP COMMON 984121103 30,990 1,191,907 X 123 897,220 34,600 260,087
XEROX CORP SUB DEB CONV CV BND 984121BB8 117,012 1,676,378 X 123 1,636,557 9,760 30,061
XYVISION SERIES B PFD CV PFD 9841809D3 13 2,816,664 X 123 2,816,664
YAHOO INC COMMON 984332106 689 4,022 X 123 3,172 700 150
YORK INTERNATIONAL CORP COMMON 986670107 131 5,600 X 123 1,500 4,100
YOUNG & RUBICAM INC COMMON 987425105 24 500 X 123 500
ZALE CORP COMMON 988858106 6 130 X 123 130
ZANY BRAINY INC COMMON 98906Q101 1 200 X 123 200
LERNOUT & HAUSPIE SPEECH PRODS COMMON B5628B104 110 1,000 X 123 1,000
DAIMLERCHRYSLER AG COMMON D1668R123 1,045 15,968 X 123 6,117 9,851
ACE LTD ADR G0070K103 73,562 3,215,844 X 123 1,563,960 2,800 1,649,084
ANNUITY AND LIFE RE HLDGS COMMON G03910109 11,110 427,300 X 123 344,500 11,200 71,600
EVEREST RE GROUP LTD COMMON G3223R108 2,630 80,600 X 123 34,000 46,600
FLAG TELECOM HLDS LTD COMMON G3529L102 25 1,100 X 123 1,100
GLOBAL CROSSING LTD COMMON G3921A100 508 12,407 X 123 11,275 1,132
LORAL SPACE & COMMUNICATIONS COMMON G56462107 221 21,869 X 123 14,469 7,400
SANTA FE INTERNATIONAL CORP COMMON G7805C108 28,238 763,200 X 123 647,800 9,300 106,100
TRANSOCEAN SEDCO FOREX INC COMMON G90078109 127,923 2,493,009 X 123 1,477,375 3,120 1,012,514
XL CAPITAL CORP ADR G98255105 122 2,200 X 123 2,200
JUSTSYSTEM CORP COMMON JP3388456 77 1,000 X 123 1,000
CHECK POINT SOFTWARE TECH COMMON M22465104 137 800 X 123 800
GILAT SATELLITE NETWORKS LTD COMMON M51474100 94 800 X 123 800
ROYAL CARIBBEAN CRUISES LTD COMMON V7780T103 62 2,200 X 123 800 1,400
SANWA INTL FIN BERM PFD 1.25% CV BND XX3012988 7,823 1,739,672,657 X 123 1,739,672,657
FLEXTRONICS INTL LTD COMMON Y2573F102 564 8,000 X 123 8,000
GIGAMEDIA LTD COMMON Y2711Y104 54 1,000 X 123 1,000
TEEKAY SHIPPING CORP COMMON Y8564W103 83 3,000 X 3,000
COLUMN TOTALS 21,006,525
</TABLE>
