<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: September 30, 1999
Check here if Amendment [ ]; Amendment Number: _____________
This Amendment (Check only one): [ ] is a restatement.
[ ] adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name: Jennison Associates LLC
Address: 466 Lexington Avenue, New York, NY 10017
Form 13F File Number: 28-74
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: Karen E. Kohler
Title: Senior Vice President
Phone: 212-421-1000
Signature, Place and Date of Signing:
/S/ Karen E. Kohler New York, New York November 8, 1999
Karen E. Kohler
Report Type (Check only one):
[X] 13F HOLDINGS REPORT.
[ ] 13F NOTICE.
[ ] 13F COMBINATION REPORT.
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FORM 13F SUMMARY PAGE
Report Summary:
Number of Other Included Managers: 1
Form 13F Information Table Entry Total: 151
Form 13F Information Table Value Total: $ 32,664,056,000
List of Other Included Managers:
No. 13F File Number Name
01 28-256 Prudential Insurance Company
of America
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<TABLE> 09/30/1999
VALUE SHARES/
SH/ PUT/ INVSTMT -----VOTING AUTHORITY-----
NAME OF ISSUER -TITLE OF CLASS- --CUSIP-- x$1000 PRN AMT
PRN CALL DSCRETN -MANAGERS- SOLE SHARED NONE
<C>
<C>
D AK STEEL HOLDING CORP COMMON 001547108 2555 140000 SH
DEFINED 01 136300 0 3700
D AMR CORP COMMON 001765106 18764 344300 SH
DEFINED 01 311100 0 33200
D AT&T LIBERTY MEDIA GROUP COMMON 001957208 408564 10949800 SH
DEFINED 01 10356100 0 593700
D ABERCROMBIE & FITCH CL A 002896207 14104 414062 SH
DEFINED 01 414002 0 60
D ABITIBI-CONSOLIDATED INC. COMMON 003924107 9329 773400 SH
DEFINED 01 749000 0 24400
D AIRBORNE FREIGHT CORP COMMON 009266107 5259 249700 SH
DEFINED 01 242900 0 6800
D ALCAN ALUMINIUM LTD. COMMON 013716105 11450 366400 SH
DEFINED 01 294400 0 72000
D ALLEGIANCE TELECOM, INC. COMMON 01747T102 238975 4541100 SH
DEFINED 01 4291600 0 249500
D ALLIED SIGNAL INC. COMMON 019512102 384930 6422200 SH
DEFINED 01 6075300 0 346900
D ALLSCRIPTS INC. COMMON 019886100 3372 212400 SH
DEFINED 01 212400 0 0
D ALLSTATE INSURANCE COMMON 020002101 8693 348600 SH
DEFINED 01 292700 0 55900
D ALTERA CORP COMMON 021441100 130394 3006200 SH
DEFINED 01 2802400 0 203800
D AMAZON COM INC. COMMON 023135106 4988 62400 SH
DEFINED 01 62400 0 0
D AMERICA ON-LINE COMMON 02364J104 364739 3505000 SH
DEFINED 01 3320600 0 184400
D AMERICAN HOME PRODUCTS COMMON 026609107 614453 14806100 SH
DEFINED 01 14070300 0 735800
D AMERICAN INTL. GROUP COMMON 026874107 954497 10979125 SH
DEFINED 01 10416325 0 562800
D AMGEN INC. COMMON 031162100 320213 3929000 SH
DEFINED 01 3718800 0 210200
D ANADARKO PETROLEUM CORP COMMON 032511107 9539 312100 SH
DEFINED 01 302100 0 10000
D APPLIED MATERIALS INC. COMMON 038222105 454022 5844200 SH
DEFINED 01 5532300 0 311900
D AUTOZONE INC COMMON 053332102 10389 370200 SH
DEFINED 01 360200 0 10000
D AVALONBAY COMMUNITIES INC. COMMON 053484101 6353 187554 SH
DEFINED 01 180380 0 7174
D AVIRON COMMON 053762100 2745 113200 SH
DEFINED 01 113200 0 0
D BANK OF AMERICA CORP. COMMON 060505104 332 5970 SH
DEFINED 01 4636 0 1334
D BIOMARIN PHARMACEUTICAL INC. COMMON 09061G101 434 25000 SH
DEFINED 01 25000 0 0
D BOISE CASCADE CORP. COMMON 097383103 14273 391700 SH
DEFINED 01 319700 0 72000
D BOISE CASCADE OFFICE PRODUCTS COMMON 097403109 3949 363100 SH
DEFINED 01 345800 0 17300
D BRISTOL-MYERS SQUIBB CO. COMMON 110122108 523692 7758400 SH
DEFINED 01 7392100 0 366300
D BROADCOM CORP. - CL. A CL A 111320107 10573 97000 SH
DEFINED 01 97000 0 0
D BURLINGTON RESOURCES INC. COMMON 122014103 10010 272400 SH
DEFINED 01 264200 0 8200
D CBS CORPORATION COMMON 12490K107 1061759 22956940 SH
DEFINED 01 21805140 0 1151800
D CIGNA CORP. COMMON 125509109 8023 103200 SH
DEFINED 01 98900 0 4300
D CK WITCO CORP COMMON 12562C108 12919 868492 SH
DEFINED 01 719684 0 148808
D CNF TRANSPORTATION INC COMMON 12612W104 5882 157900 SH
DEFINED 01 153000 0 4900
D CAPITAL ONE FINANCIAL CORP COMMON 14040H105 1837 47100 SH
DEFINED 01 47100 0 0
D CARDINAL HEALTH INC COMMON 14149Y108 1515 27800 SH
DEFINED 01 27800 0 0
D CAREINSITE, INC. COMMON 14170M106 2531 50000 SH
DEFINED 01 50000 0 0
D CHAMPION INTERNATIONAL CORP. COMMON 158525105 8626 167900 SH
DEFINED 01 163300 0 4600
D CHASE MANHATTAN CORP COMMON 16161A108 843417 11189612 SH
DEFINED 01 10632556 0 557056
D CHRIS-CRAFT INDS COMMON 170520100 4651 82875 SH
DEFINED 01 80575 0 2300
D CISCO SYSTEMS INC. COMMON 17275R102 1285396 18747800 SH
DEFINED 01 17811950 0 935850
D CITIGROUP INC COMMON 172967101 901890 20497500 SH
DEFINED 01 19378075 0 1119425
D CLEAR CHANNEL COMMUNICATIONS I COMMON 184502102 698799 8748659 SH
DEFINED 01 8278359 0 470300
D CONVERGYS CORPORATION COMMON 212485106 72033 3635700 SH
DEFINED 01 3559900 0 75800
D CYGNUS INC COMMON 232560102 2855 254500 SH
DEFINED 01 254500 0 0
D CYTEC INDUSTRIES INC. COMMON 232820100 8622 366900 SH
DEFINED 01 356900 0 10000
D DANA CORP COMMON 235811106 4597 123800 SH
DEFINED 01 120500 0 3300
D DELL COMPUTER CORP. COMMON 247025109 719192 17200400 SH
DEFINED 01 16336600 0 863800
D DEXTER CORPORATION COMMON 252165105 10876 291500 SH
DEFINED 01 257700 0 33800
D DOLE FOOD COMPANY COMMON 256605106 3028 159400 SH
DEFINED 01 154800 0 4600
D EMC CORP. MASS. COMMON 268648102 677770 9495900 SH
DEFINED 01 9040900 0 455000
D ENGELHARD CORP COMMON 292845104 9562 523900 SH
DEFINED 01 507100 0 16800
D EQUANT N V-REGISTERED SHARES COM N.Y.REG 294409107 208360 2560500 SH
DEFINED 01 2421300 0 139200
D FLEET FINANCIAL GROUP COMMON 338915101 8442 230500 SH
DEFINED 01 224400 0 6100
D FOREST LABS CLASS A CL A 345838106 3555 84400 SH
DEFINED 01 84400 0 0
D GAP INC. COMMON 364760108 434240 13569998 SH
DEFINED 01 12836038 0 733960
D GENENTECH INC. COMMON 368710406 152180 1040100 SH
DEFINED 01 982600 0 57500
D GENERAL ELECTRIC CO. COMMON 369604103 1075872 9074300 SH
DEFINED 01 8588800 0 485500
D GENERAL MOTORS CORP COMMON 370442105 22343 355000 SH
DEFINED 01 320200 0 34800
D GENERAL MOTORS CL H CLASS H 370442832 16528 288700 SH
DEFINED 01 284100 0 4600
D B.F. GOODRICH COMMON 382388106 9022 311100 SH
DEFINED 01 301500 0 9600
D WR GRACE & CO. COMMON 38388F108 9753 595600 SH
DEFINED 01 500500 0 95100
D HARRAH'S ENTERTAINMENT INC COMMON 413619107 1313 47300 SH
DEFINED 01 47300 0 0
D HERTZ CORP-CL A CL A 428040109 11286 256500 SH
DEFINED 01 222700 0 33800
D HEWLETT PACKARD CO. COMMON 428236103 596293 6570720 SH
DEFINED 01 6205920 0 364800
D HIBERNIA CORP-CLASS A CL A 428656102 29459 2534100 SH
DEFINED 01 2249400 0 284700
D HILTON HOTELS CORP COMMON 432848109 20263 2051900 SH
DEFINED 01 1961800 0 90100
D HOME DEPOT INC COMMON 437076102 1043831 15210656 SH
DEFINED 01 14404058 0 806598
D IMC GLOBAL INC COMMON 449669100 5551 381200 SH
DEFINED 01 370900 0 10300
D INFINITY BROADCASTING CORP - A CL A 45662S102 10016 341700 SH
DEFINED 01 341700 0 0
D INFORMIX CORP. COMMON 456779107 6197 780800 SH
DEFINED 01 609400 0 171400
D INTEL CORP COMMON 458140100 924513 12440880 SH
DEFINED 01 11819480 0 621400
D INTERGRAPH CORP COMMON 458683109 2603 462700 SH
DEFINED 01 446700 0 16000
D INT'L BUSINESS MACHINES CORP. COMMON 459200101 883431 7301080 SH
DEFINED 01 6913480 0 387600
D INTERNATIONAL RECTIFIER CORP. COMMON 460254105 15045 986600 SH
DEFINED 01 847300 0 139300
D INTUIT INC. COMMON 461202103 202 2300 SH
DEFINED 01 2300 0 0
D JDS UNIPHASE CORP COMMON 46612J101 164232 1443000 SH
DEFINED 01 1364600 0 78400
D JOHNSON AND JOHNSON COMMON 478160104 251673 2739300 SH
DEFINED 01 2739300 0 0
D JUNIPER NETWORKS INC. COMMON 48203R104 145650 800000 SH
DEFINED 01 756200 0 43800
D KLA-TENCOR CORPORATION COMMON 482480100 315575 4855000 SH
DEFINED 01 4596000 0 259000
D K MART CORP. COMMON 482584109 13092 1120100 SH
DEFINED 01 958000 0 162100
D KOHL'S CORP. COMMON 500255104 540168 8168900 SH
DEFINED 01 7712500 0 456400
D LAM RESEARCH CORP COMMON 512807108 787 12900 SH
DEFINED 01 12900 0 0
D ESTEE LAUDER COMPANIES, INC. CL A 518439104 271899 6960600 SH
DEFINED 01 6595700 0 364900
D LEUKOSITE INC. COMMON 52728R102 1226 60900 SH
DEFINED 01 60900 0 0
D LEVEL 3 COMMUNICATIONS, INC. COMMON 52729N100 153346 2936600 SH
DEFINED 01 2776200 0 160400
D LILLY (ELI) & CO. COMMON 532457108 211350 3292700 SH
DEFINED 01 2983700 0 309000
D LIMITED INC COMMON 532716107 12745 333216 SH
DEFINED 01 289189 0 44027
D LUCENT TECHNOLOGIES, INC. COMMON 549463107 415324 6401920 SH
DEFINED 01 6054710 0 347210
D MBNA CORP COMMON 55262L100 236484 10366400 SH
DEFINED 01 10207500 0 158900
D MCI WORLDCOM INC. COMMON 55268B106 1101096 15319600 SH
DEFINED 01 14566000 0 753600
D MANPOWER INC COMMON 56418H100 12759 438100 SH
DEFINED 01 423500 0 14600
D MCDERMOTT INTL INC COMMON 580037109 4889 241400 SH
DEFINED 01 235300 0 6100
D MCDONALD'S CORP. COMMON 580135101 516254 11936500 SH
DEFINED 01 11186700 0 749800
D MEDIMMUNE INC COMMON 584699102 2900 29100 SH
DEFINED 01 29100 0 0
D MERCK AND CO. COMMON 589331107 312182 4816700 SH
DEFINED 01 4354700 0 462000
D MICROSOFT CORP. COMMON 594918104 1550077 17116100 SH
DEFINED 01 16236300 0 879800
D MILLIPORE CORP. COMMON 601073109 10938 291200 SH
DEFINED 01 248900 0 42300
D MORGAN STANLEY DEAN WITTER & C COMMON 617446448 538835 6041605 SH
DEFINED 01 5720795 0 320810
D MOTOROLA INC. COMMON 620076109 316923 3601400 SH
DEFINED 01 3431100 0 170300
D MUTUAL RISK MANAGEMENT, LTD. COMMON 628351108 24638 2011296 SH
DEFINED 01 2011296 0 0
D NTL INCORPORATED COMMON 629407107 278883 2902200 SH
DEFINED 01 2745900 0 156300
D NAT'L SEMICONDUCTOR CORP. COMMON 637640103 11782 385500 SH
DEFINED 01 328500 0 57000
D NAVISTAR INTERNATIONAL CORP. COMMON 63934E108 2730 58700 SH
DEFINED 01 58700 0 0
D NEW YORK TIMES CLASS A CL A 650111107 17989 479700 SH
DEFINED 01 407800 0 71900
D NEXTLINK COMMUNICATIONS-A CL A 65333H707 202071 3897700 SH
DEFINED 01 3702000 0 195700
D NUCOR CORP COMMON 670346105 11388 239100 SH
DEFINED 01 232600 0 6500
D OMNICOM GROUP COMMON 681919106 561180 7086720 SH
DEFINED 01 6672820 0 413900
D PHARMACYCLICS INC. COMMON 716933106 2003 49000 SH
DEFINED 01 49000 0 0
D POLAROID CORP. COMMON 731095105 5109 196500 SH
DEFINED 01 190400 0 6100
D POLO RALPH LAUREN CORP. CL A 731572103 9390 523500 SH
DEFINED 01 507100 0 16400
D PROMUS HOTEL CORP. COMMON 74342P106 10677 327900 SH
DEFINED 01 318900 0 9000
D QWEST COMMUNICATIONS INTL COMMON 749121109 338970 11466200 SH
DEFINED 01 10864600 0 601600
D RAYTHEON CO. - CLASS A CL A 755111309 13457 277460 SH
DEFINED 01 239528 0 37932
D REYNOLDS METALS CO. COMMON 761763101 10125 167700 SH
DEFINED 01 162300 0 5400
D RYDER SYSTEM INC COMMON 783549108 4549 223300 SH
DEFINED 01 187400 0 35900
D SCHERING PLOUGH CORP. COMMON 806605101 600127 13756500 SH
DEFINED 01 13121500 0 635000
D SCHWAB (CHARLES) CORP COMMON 808513105 184846 5528100 SH
DEFINED 01 5232000 0 296100
D SEPRACOR INC. COMMON 817315104 3262 43200 SH
DEFINED 01 43200 0 0
D SMURFIT-STONE CONTAINER CORP COMMON 832727101 14803 684545 SH
DEFINED 01 575297 0 109248
D SOLECTRON CORP COMMON 834182107 4948 68900 SH
DEFINED 01 68900 0 0
D STAPLES, INC. COMMON 855030102 251612 11535200 SH
DEFINED 01 10932400 0 602800
D STMICROELECTRONICS NV-NY SHS COMMON 861012102 83853 1132200 SH
DEFINED 01 1081900 0 50300
D STONE CONTAINER PREF SERIES E PFD E CV $1.75 861589307 270 12400 SH
DEFINED 01 5000 0 7400
D SUN MICROSYSTEMS COMMON 866810104 341133 3668100 SH
DEFINED 01 3466400 0 201700
D SUPERVALU INC. COMMON 868536103 7107 322100 SH
DEFINED 01 311100 0 11000
D SYMBOL TECHNOLOGIES INC. COMMON 871508107 98293 2923200 SH
DEFINED 01 2811600 0 111600
D TELLABS INC. COMMON 879664100 476532 8369400 SH
DEFINED 01 7941400 0 428000
D TEXAS INSTRUMENTS INC. COMMON 882508104 1225763 14902900 SH
DEFINED 01 14152100 0 750800
D 3 COM CORP COMMON 885535104 7682 267200 SH
DEFINED 01 267200 0 0
D TIFFANY & CO. COMMON 886547108 432688 7219000 SH
DEFINED 01 6857800 0 361200
D TITAN PHARMACEUTICALS INC. COMMON 888314101 94 10000 SH
DEFINED 01 10000 0 0
D TOSCO CORP COMMON 891490302 10408 412200 SH
DEFINED 01 400900 0 11300
D TRANSKARYOTIC THERAPIES INC. COMMON 893735100 3324 64700 SH
DEFINED 01 64700 0 0
D TRAVELERS PROP CASUALTY - CL A CL A 893939108 8670 293900 SH
DEFINED 01 255900 0 38000
D TRIBUNE CO COMMON 896047107 9159 184100 SH
DEFINED 01 178900 0 5200
D TYCO INTERNATIONAL LTD. COMMON 902124106 732807 7097400 SH
DEFINED 01 6753100 0 344300
D UAL CORP. COM PAR $0.01 902549500 209 3200 SH
DEFINED 01 2400 0 800
D USX-MARATHON GROUP COMMON 902905827 10036 343100 SH
DEFINED 01 332200 0 10900
D USX-US STEEL GROUP COMMON 90337T101 10797 419300 SH
DEFINED 01 405900 0 13400
D UNIVISION COMMUNICATIONS INC. CL A 914906102 492002 6046100 SH
DEFINED 01 5691500 0 354600
D UNOCAL CORP. COMMON 915289102 16552 446600 SH
DEFINED 01 376600 0 70000
D VERITAS SOFTWARE CORPORATION COMMON 923436109 5695 75000 SH
DEFINED 01 75000 0 0
D VERTEX PHARMACEUTICALS COMMON 92532F100 11881 382500 SH
DEFINED 01 318200 0 64300
D VIROPHARMA INC. COMMON 928241108 3318 148900 SH
DEFINED 01 148900 0 0
D WAL-MART STORES COMMON 931142103 347278 7301500 SH
DEFINED 01 6903000 0 398500
D WARNER LAMBERT CO. COMMON 934488107 698670 10526100 SH
DEFINED 01 10040100 0 486000
D KNIGHTSBRIDGE TANKERS LTD. ORD G5299G106 1860 116200 SH
DEFINED 01 112100 0 4100
D LORAL SPACE & COMMUNICATIONS COMMON G56462107 18129 1054800 SH
DEFINED 01 884500 0 170300
D GLAXO WELLCOME PLC-ADR ADR 37733W105 437445 8412400 SH
DEFINED 01 8032600 0 379800
D NOKIA CORP-SPONSORED ADR ADR 654902204 496020 5519000 SH
DEFINED 01 5223200 0 295800
D VODAFONE AIRTOUCH PLC-ADR ADR 92857T107 633770 2665699 SH
DEFINED 01 2522649 0 143050
S REPORT SUMMARY 151 DATA RECORDS 32664056
1 OTHER MANAGERS ON WHOSE BEHALF REPORT IS FILED
</TABLE>
