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<CAPTION
FORM 13F
PAGE 1 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C> <C> <C>
ACE LTD ORD G0070K103 606 15450 SH SOLE 01 15450 0 0
---------- --------
606 15450
GLOBAL CROSSING LTD COM G3921A100 279 9000 SH SOLE 01 9000 0 0
31 1000 SH DEFINED 01 1000 0 0
---------- --------
310 10000
WHITE MTNS INS GROUP LTD COM G9618E107 437 1600 SH SOLE 01 1600 0 0
---------- --------
437 1600
XL CAP LTD CL A G98255105 5810 79052 SH SOLE 01 79052 0 0
---------- --------
5810 79052
GALILEO TECHNOLOGY LTD ORD M47298100 175 5505 SH SOLE 01 0 0 5505
105 3300 SH DEFINED 01 800 0 2500
---------- --------
280 8805
FLEXTRONICS INTL LTD ORD Y2573F102 242 2946 SH SOLE 01 2946 0 0
1220 14860 SH DEFINED 01 14860 0 0
---------- --------
1462 17806
AT&T CORP COM 001957109 826 28115 SH SOLE 01 27745 0 370
285 9705 SH DEFINED 01 9705 0 0
---------- --------
1111 37820
AT&T CORP COM LIB GRP A 001957208 1393 77408 SH SOLE 01 77408 0 0
---------- --------
1393 77408
ATMI INC COM 00207R101 43673 1868366 SH SOLE 01 1819182 0 49184
---------- --------
43673 1868366
AVX CORP NEW COM 002444107 261 10000 SH SOLE 01 10000 0 0
---------- --------
261 10000
FORM 13F
PAGE 2 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
ABBOTT LABS COM 002824100 13066 274705 SH SOLE 01 257450 0 17255
9235 194178 SH DEFINED 01 192468 1710 0
---------- --------
22301 468883
ACNIELSEN CORP COM 004833109 227 9547 SH SOLE 01 9547 0 0
190 8000 SH DEFINED 01 8000 0 0
---------- --------
418 17547
ADAMS EXPRESS CO COM 006212104 353 9148 SH SOLE 01 9148 0 0
---------- --------
353 9148
ADVANCED LTG TECHNOLOGIES COM 00753C102 15727 1270865 SH SOLE 01 1240432 0 30433
210 17000 SH DEFINED 01 17000 0 0
---------- --------
15937 1287865
AGILENT TECHNOLOGIES INC COM 00846U101 1901 38853 SH SOLE 01 35059 38 3756
992 20276 SH DEFINED 01 20276 0 0
---------- --------
2894 59129
AGILE SOFTWARE CORP DEL COM 00846X105 351 3900 SH SOLE 01 3900 0 0
---------- --------
351 3900
AIR PRODS & CHEMS INC COM 009158106 613 17022 SH SOLE 01 16872 0 150
279 7740 SH DEFINED 01 6680 1060 0
---------- --------
891 24762
ALCOA INC COM 013817101 202 8000 SH SOLE 01 8000 0 0
3194 126189 SH DEFINED 01 126189 0 0
---------- --------
3397 134189
ALLERGAN INC COM 018490102 34 400 SH SOLE 01 400 0 0
560 6628 SH DEFINED 01 6628 0 0
---------- --------
593 7028
ALLIED WASTE INDS INC COM PAR$.01NEW 019589308 220 24000 SH SOLE 01 24000 0 0
---------- --------
220 24000
FORM 13F
PAGE 3 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
ALLSTATE CORP COM 020002101 131 3756 SH SOLE 01 3756 0 0
100 2876 SH DEFINED 01 2876 0 0
---------- --------
230 6632
ALLTEL CORP COM 020039103 4176 80023 SH SOLE 01 80023 0 0
---------- --------
4176 80023
ALPHA INDS INC COM 020753109 10981 322391 SH SOLE 01 313911 0 8480
---------- --------
10981 322391
ALPHARMA INC CL A 020813101 342 5600 SH SOLE 01 5600 0 0
---------- --------
342 5600
ALTEON WEBSYSTEMS INC COM 02145A109 243 2243 SH SOLE 01 2243 0 0
---------- --------
243 2243
ALZA CORP DEL COM 022615108 2041 23600 SH SOLE 01 23400 200 0
279 3225 SH DEFINED 01 3225 0 0
---------- --------
2320 26825
AMERICA ONLINE INC DEL COM 02364J104 23117 430085 SH SOLE 01 415420 150 14515
2352 43765 SH DEFINED 01 43765 0 0
---------- --------
25470 473850
AMERICAN EXPRESS CO COM 025816109 13211 217460 SH SOLE 01 217460 0 0
529 8700 SH DEFINED 01 8700 0 0
---------- --------
13739 226160
AMERICAN GENERAL CORP COM 026351106 659 8443 SH SOLE 01 8443 0 0
225 2882 SH DEFINED 01 2882 0 0
---------- --------
883 11325
AMERICAN HOME PRODS CORP COM 026609107 5889 104117 SH SOLE 01 103117 0 1000
2863 50617 SH DEFINED 01 50617 0 0
---------- --------
8752 154734
FORM 13F
PAGE 4 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
AMERICAN INTL GROUP INC COM 026874107 32002 334445 SH SOLE 01 309498 187 24760
5276 55134 SH DEFINED 01 53872 1262 0
---------- --------
37278 389579
AMERICAN STD COS INC DEL COM 029712106 1235 27800 SH SOLE 01 27800 0 0
---------- --------
1235 27800
AMERICAN TOWER CORP CL A 029912201 3976 105513 SH SOLE 01 105513 0 0
517 13710 SH DEFINED 01 3910 0 9800
---------- --------
4493 119223
AMGEN INC COM 031162100 3174 45458 SH SOLE 01 44443 0 1015
1640 23480 SH DEFINED 01 23480 0 0
---------- --------
4814 68938
ANALOG DEVICES INC COM 032654105 553 6700 SH SOLE 01 6700 0 0
62 750 SH DEFINED 01 750 0 0
---------- --------
615 7450
ANHEUSER BUSCH COS INC COM 035229103 20564 486004 SH SOLE 01 458224 400 27380
2504 59180 SH DEFINED 01 59180 0 0
---------- --------
23068 545184
ANTIGENICS INC COM 037032109 264 1100 SH SOLE 01 1100 0 0
---------- --------
264 1100
APOLLO GROUP INC CL A 037604105 56809 1424670 SH SOLE 01 1387626 0 37044
---------- --------
56809 1424670
APPLIED MATLS INC COM 038222105 285 4810 SH DEFINED 01 4810 0 0
---------- --------
285 4810
APTARGROUP INC COM 038336103 4357 182000 SH DEFINED 01 182000 0 0
---------- --------
4357 182000
ARMOR HOLDINGS INC COM 042260109 461 30700 SH SOLE 01 30700 0 0
60 4000 SH DEFINED 01 0 0 4000
---------- --------
521 34700
FORM 13F
PAGE 5 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
ARTHROCARE CORP COM 043136100 43534 2239737 SH SOLE 01 2182055 0 57682
233 12000 SH DEFINED 01 12000 0 0
---------- --------
43767 2251737
ASSOCIATES FIRST CAP CORP CL A 046008108 1764 46420 SH SOLE 01 46420 0 0
---------- --------
1764 46420
ASTROPOWER INC COM 04644A101 30775 776656 SH SOLE 01 757689 0 18967
159 4000 SH DEFINED 01 4000 0 0
---------- --------
30933 780656
ATLANTIC COAST AIRLINES HLDGS COM 048396105 24179 751199 SH SOLE 01 731592 0 19607
---------- --------
24179 751199
ATMEL CORP COM 049513104 164 10800 SH SOLE 01 10800 0 0
328 21600 SH DEFINED 01 21600 0 0
---------- --------
492 32400
AURORA BIOSCIENCES CORP COM 051920106 462 6800 SH SOLE 01 6800 0 0
---------- --------
462 6800
AUTOMATIC DATA PROCESSING INC COM 053015103 4336 64840 SH SOLE 01 47540 0 17300
1081 16160 SH DEFINED 01 16160 0 0
---------- --------
5417 81000
BP AMOCO P L C SPONSORED ADR 055622104 5220 98494 SH SOLE 01 93494 0 5000
2894 54595 SH DEFINED 01 54595 0 0
---------- --------
8114 153089
BMC SOFTWARE INC COM 055921100 196 10235 SH SOLE 01 10235 0 0
---------- --------
196 10235
BANK OF AMERICA CORPORATION COM 060505104 1339 25558 SH SOLE 01 24758 0 800
596 11373 SH DEFINED 01 11373 0 0
---------- --------
1934 36931
FORM 13F
PAGE 6 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
BANK NEW YORK INC COM 064057102 391 6980 SH SOLE 01 6980 0 0
---------- --------
391 6980
BAXTER INTL INC COM 071813109 234 2933 SH SOLE 01 2933 0 0
---------- --------
234 2933
BEA SYS INC COM 073325102 2985 38330 SH SOLE 01 38330 0 0
218 2800 SH DEFINED 01 0 0 2800
---------- --------
3203 41130
BEAR STEARNS COS INC COM 073902108 1949 30937 SH SOLE 01 30937 0 0
---------- --------
1949 30937
BECTON DICKINSON & CO COM 075887109 173 6560 SH SOLE 01 6560 0 0
148 5600 SH DEFINED 01 5600 0 0
---------- --------
321 12160
BELLSOUTH CORP COM 079860102 1042 25896 SH SOLE 01 25896 0 0
1180 29316 SH DEFINED 01 29316 0 0
---------- --------
2222 55212
BERKSHIRE HATHAWAY INC DEL CL B 084670207 3080 1488 SH SOLE 01 1488 0 0
433 209 SH DEFINED 01 209 0 0
---------- --------
3513 1697
BESTFOODS COM 08658U101 298 4100 SH SOLE 01 4100 0 0
617 8486 SH DEFINED 01 8486 0 0
---------- --------
916 12586
BLACKROCK 2001 TERM TR INC COM 092477108 486 52500 SH SOLE 01 52500 0 0
---------- --------
486 52500
BLYTH INC COM 09643P108 5489 234200 SH SOLE 01 234200 0 0
---------- --------
5489 234200
FORM 13F
PAGE 7 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
BOEING CO COM 097023105 419 6647 SH SOLE 01 6647 0 0
115 1833 SH DEFINED 01 1833 0 0
---------- --------
534 8480
BORON LEPORE & ASSOCS INC COM 10001P102 205 20000 SH SOLE 01 20000 0 0
---------- --------
205 20000
BOUYGUES OFFSHORE S A SPONSORED ADR 102112109 260 10000 SH SOLE 01 10000 0 0
---------- --------
260 10000
BRIGHT HORIZON FAMILY SOLUTION COM 109195107 11870 464379 SH SOLE 01 452429 0 11950
---------- --------
11870 464379
BRISTOL MYERS SQUIBB CO COM 110122108 25000 437628 SH SOLE 01 410498 300 26830
5985 104763 SH DEFINED 01 104763 0 0
---------- --------
30984 542391
BROADVISION INC COM 111412102 43253 1683849 SH SOLE 01 1633256 0 50593
690 26850 SH DEFINED 01 26850 0 0
---------- --------
43943 1710699
CIGNA CORP COM 125509109 296 2835 SH SOLE 01 2835 0 0
893 8550 SH DEFINED 01 8550 0 0
---------- --------
1189 11385
CSG SYS INTL INC COM 126349109 943 32500 SH SOLE 01 32500 0 0
87 3000 SH DEFINED 01 0 0 3000
---------- --------
1030 35500
CSX CORP COM 126408103 100 4600 SH SOLE 01 4600 0 0
219 10054 SH DEFINED 01 10054 0 0
---------- --------
320 14654
CVS CORP COM 126650100 11992 258941 SH SOLE 01 235396 200 23345
1573 33965 SH DEFINED 01 33965 0 0
---------- --------
13565 292906
FORM 13F
PAGE 8 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
CANADIAN NATL RY CO COM 136375102 5077 173200 SH SOLE 01 173200 0 0
---------- --------
5077 173200
CAPITAL ONE FINL CORP COM 14040H105 8430 120317 SH SOLE 01 112667 200 7450
592 8456 SH DEFINED 01 8456 0 0
---------- --------
9022 128773
CARDINAL HEALTH INC COM 14149Y108 5196 58917 SH SOLE 01 55467 0 3450
395 4475 SH DEFINED 01 4475 0 0
---------- --------
5590 63392
CENDANT CORP COM 151313103 6835 628514 SH SOLE 01 628514 0 0
431 39590 SH DEFINED 01 35625 0 3965
---------- --------
7266 668104
CERUS CORP COM 157085101 305 5500 SH SOLE 01 5500 0 0
---------- --------
305 5500
CHAMPION ENTERPRISES INC COM 158496109 758 178360 SH SOLE 01 178360 0 0
---------- --------
758 178360
CHASE MANHATTAN CORP NEW COM 16161A108 16761 362901 SH SOLE 01 338125 225 24551
2521 54581 SH DEFINED 01 54581 0 0
---------- --------
19282 417482
CHECKFREE CORP NEW COM 162813109 239701 5722027 SH SOLE 01 5722027 0 0
13 300 SH DEFINED 01 300 0 0
---------- --------
239714 5722327
CHEVRON CORPORATION COM 166751107 8720 102288 SH SOLE 01 93513 100 8675
2171 25468 SH DEFINED 01 25468 0 0
---------- --------
10891 127756
CHUBB CORP COM 171232101 583 7368 SH SOLE 01 3868 0 3500
2958 37380 SH DEFINED 01 37380 0 0
---------- --------
3541 44748
FORM 13F
PAGE 9 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
CIENA CORP COM 171779101 897 7300 SH SOLE 01 7300 0 0
---------- --------
897 7300
CIRCUIT CITY STORE INC CIRCT CITY GRP 172737108 27 1160 SH SOLE 01 1160 0 0
258 11200 SH DEFINED 01 11200 0 0
---------- --------
284 12360
CISCO SYS INC COM 17275R102 42528 769740 SH SOLE 01 719440 400 49900
10710 193849 SH DEFINED 01 193529 0 320
---------- --------
53238 963589
CITIGROUP INC COM 172967101 44364 820615 SH SOLE 01 786916 266 33433
4284 79246 SH DEFINED 01 79246 0 0
---------- --------
48648 899861
CLEAR CHANNEL COMMUNICATIONS COM 184502102 2584 45727 SH SOLE 01 45727 0 0
1309 23173 SH DEFINED 01 15173 0 8000
---------- --------
3893 68900
CLEARNET COMMUNICATIONS INC CL A NON-VTG 184902104 222 5000 SH SOLE 01 5000 0 0
---------- --------
222 5000
COCA COLA CO COM 191216100 4769 86507 SH SOLE 01 84867 0 1640
3311 60072 SH DEFINED 01 60072 0 0
---------- --------
8080 146579
COGNEX CORP COM 192422103 3502 88800 SH SOLE 01 88800 0 0
---------- --------
3502 88800
COLGATE PALMOLIVE CO COM 194162103 14085 298408 SH SOLE 01 281800 200 16408
3339 70736 SH DEFINED 01 69116 1620 0
---------- --------
17424 369144
COLLAGENEX PHARMACEUTICALS INC COM 19419B100 2645 325575 SH SOLE 01 317251 0 8324
---------- --------
2645 325575
COLUMBIA BANCORP MD INC COM 197227101 682 52490 SH SOLE 01 52490 0 0
---------- --------
682 52490
FORM 13F
PAGE 10 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
COMCAST CORP CL A SPL 200300200 46 1125 SH SOLE 01 1125 0 0
167 4085 SH DEFINED 01 4085 0 0
---------- --------
213 5210
COMPAQ COMPUTER CORP COM 204493100 2619 94965 SH SOLE 01 88890 0 6075
940 34090 SH DEFINED 01 34090 0 0
---------- --------
3559 129055
COMPUTER ASSOC INTL INC COM 204912109 13135 521503 SH SOLE 01 481521 400 39582
2387 94765 SH DEFINED 01 92410 2180 175
---------- --------
15522 616268
CONCORD EFS INC COM 206197105 479 13500 SH SOLE 01 13500 0 0
---------- --------
479 13500
CONSECO INC COM 208464107 1893 248200 SH SOLE 01 248200 0 0
252 33028 SH DEFINED 01 33028 0 0
---------- --------
2144 281228
CONSTELLATION ENERGY CORP COM 210371100 909 18265 SH SOLE 01 18265 0 0
437 8788 SH DEFINED 01 8788 0 0
---------- --------
1346 27053
CORNING INC COM 219350105 233 785 SH SOLE 01 785 0 0
149 500 SH DEFINED 01 500 0 0
---------- --------
382 1285
COSTCO WHSL CORP NEW COM 22160K105 3869 110755 SH SOLE 01 105780 0 4975
75 2145 SH DEFINED 01 2145 0 0
---------- --------
3944 112900
COSTAR GROUP INC COM 22160N109 9796 264748 SH SOLE 01 257796 0 6952
---------- --------
9796 264748
COUNTRYWIDE CR INDS INC DEL COM 222372104 6380 169000 SH SOLE 01 169000 0 0
---------- --------
6380 169000
FORM 13F
PAGE 11 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
DANAHER CORP DEL COM 235851102 1725 34666 SH SOLE 01 33866 0 800
483 9700 SH DEFINED 01 9700 0 0
---------- --------
2207 44366
DEERE & CO COM 244199105 1040 31270 SH SOLE 01 23670 0 7600
39 1175 SH DEFINED 01 1175 0 0
---------- --------
1079 32445
DELL COMPUTER CORP COM 247025109 19850 644218 SH SOLE 01 600953 775 42490
3883 126010 SH DEFINED 01 126010 0 0
---------- --------
23732 770228
DIGIMARC CORP COM 253807101 3980 213700 SH SOLE 01 208100 0 5600
---------- --------
3980 213700
DIGITAL INSIGHT CORP COM 25385P106 15570 433996 SH SOLE 01 422676 0 11320
---------- --------
15570 433996
DIONEX CORP COM 254546104 332 12000 SH SOLE 01 12000 0 0
25 900 SH DEFINED 01 900 0 0
---------- --------
356 12900
DISNEY WALT CO COM DISNEY 254687106 4798 125444 SH SOLE 01 117554 0 7890
2729 71355 SH DEFINED 01 71355 0 0
---------- --------
7528 196799
DOCUMENTUM INC COM 256159104 55759 686793 SH SOLE 01 668683 0 18110
---------- --------
55759 686793
DOLLAR GEN CORP COM 256669102 675 40282 SH SOLE 01 23407 0 16875
---------- --------
675 40282
DONNELLEY R R & SONS CO COM 257867101 246 10008 SH SOLE 01 10008 0 0
74 3000 SH DEFINED 01 3000 0 0
---------- --------
320 13008
FORM 13F
PAGE 12 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
DOVER CORP COM 260003108 6161 131260 SH SOLE 01 123160 0 8100
8755 186530 SH DEFINED 01 186530 0 0
---------- --------
14916 317790
DOW CHEM CO COM 260543103 159 6360 SH SOLE 01 6360 0 0
318 12750 SH DEFINED 01 12750 0 0
---------- --------
477 19110
DU PONT E I DE NEMOURS & CO COM 263534109 7341 177153 SH SOLE 01 169923 0 7230
1102 26585 SH DEFINED 01 25985 600 0
---------- --------
8442 203738
DUKE ENERGY CORP COM 264399106 394 4600 SH SOLE 01 4600 0 0
238 2775 SH DEFINED 01 2775 0 0
---------- --------
632 7375
DUN & BRADSTREET CORP DEL COM 26483B106 1252 36362 SH SOLE 01 22462 0 13900
2543 73833 SH DEFINED 01 37533 0 36300
---------- --------
3795 110195
E M C CORP MASS COM 268648102 528 5330 SH SOLE 01 5330 0 0
218 2200 SH DEFINED 01 1200 0 1000
---------- --------
746 7530
EPIX MEDICAL INC COM 26881Q101 3722 265861 SH SOLE 01 258717 0 7144
---------- --------
3722 265861
EASTMAN KODAK CO COM 277461109 329 8037 SH SOLE 01 8037 0 0
164 4005 SH DEFINED 01 4005 0 0
---------- --------
492 12042
EATON CORP COM 278058102 60 971 SH SOLE 01 971 0 0
616 10000 SH DEFINED 01 10000 0 0
---------- --------
676 10971
FORM 13F
PAGE 13 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
EBENX INC COM 278668108 6793 600481 SH SOLE 01 585109 0 15372
---------- --------
6793 600481
ECLIPSYS CORP COM 278856109 25137 1571035 SH SOLE 01 1530587 0 40448
---------- --------
25137 1571035
EL PASO ENERGY CORP DEL COM 283905107 202 3284 SH SOLE 01 3284 0 0
51 834 SH DEFINED 01 834 0 0
---------- --------
254 4118
ELAN PLC ADR 284131208 411 7500 SH SOLE 01 7500 0 0
44 800 SH DEFINED 01 800 0 0
---------- --------
454 8300
ELECTRONIC ARTS INC COM 285512109 1146 23200 SH SOLE 01 23200 0 0
628 12728 SH DEFINED 01 12728 0 0
---------- --------
1774 35928
ELECTRONIC DATA SYS NEW COM 285661104 241 5800 SH SOLE 01 5800 0 0
278 6700 SH DEFINED 01 6700 0 0
---------- --------
519 12500
EMERSON ELEC CO COM 291011104 1489 22225 SH SOLE 01 22225 0 0
482 7200 SH DEFINED 01 7200 0 0
---------- --------
1971 29425
EMISPHERE TECHNOLOGIES INC COM 291345106 4815 160832 SH SOLE 01 156568 0 4264
---------- --------
4815 160832
ENRON CORP COM 293561106 1674 19100 SH SOLE 01 19100 0 0
1141 13027 SH DEFINED 01 13027 0 0
---------- --------
2815 32127
ENRON CORP PFD 2CV $10.50 293561601 855 450 SH SOLE 01 450 0 0
---------- --------
855 450
FORM 13F
PAGE 14 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
ERICSSON L M TEL CO ADR CL B SEK10 294821400 960 64799 SH SOLE 01 64799 0 0
1216 82096 SH DEFINED 01 82096 0 0
---------- --------
2176 146895
EXXON MOBIL CORP COM 30231G102 61053 685026 SH SOLE 01 658726 99 26201
32815 368186 SH DEFINED 01 368186 0 0
---------- --------
93868 1053212
F&M BANCORP MD COM 302367107 327 16530 SH SOLE 01 16530 0 0
28 1402 SH DEFINED 01 1402 0 0
---------- --------
355 17932
FAMILY DLR STORES INC COM 307000109 289 15000 SH SOLE 01 15000 0 0
---------- --------
289 15000
FEDERAL HOME LN MTG CORP COM 313400301 16664 308239 SH SOLE 01 294514 200 13525
540 9990 SH DEFINED 01 9990 0 0
---------- --------
17204 318229
FEDERAL NATL MTG ASSN COM 313586109 1836 25684 SH SOLE 01 22304 0 3380
4009 56074 SH DEFINED 01 56074 0 0
---------- --------
5846 81758
FIFTH THIRD BANCORP COM 316773100 316 5865 SH DEFINED 01 5865 0 0
---------- --------
316 5865
FIRST DATA CORP COM 319963104 5516 141200 SH SOLE 01 141200 0 0
---------- --------
5516 141200
FIRST UN CORP COM 337358105 768 23862 SH SOLE 01 23862 0 0
470 14588 SH DEFINED 01 14588 0 0
---------- --------
1238 38450
FIRSTAR CORP NEW WIS COM 33763V109 2806 125386 SH SOLE 01 108086 0 17300
101 4500 SH DEFINED 01 4500 0 0
---------- --------
2906 129886
FORM 13F
PAGE 15 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
FLOWERS INDS INC COM 343496105 537 27562 SH DEFINED 01 27562 0 0
---------- --------
537 27562
FORD MTR CO DEL COM PAR $0.01 345370860 4308 170203 SH SOLE 01 170200 0 3
177 6991 SH DEFINED 01 6991 0 0
---------- --------
4485 177194
FORWARD AIR CORP COM 349853101 40258 1144123 SH SOLE 01 1114359 0 29764
---------- --------
40258 1144123
FRANKLIN RES INC COM 354613101 656 14775 SH SOLE 01 10875 0 3900
---------- --------
656 14775
GANNETT INC COM 364730101 1394 26300 SH SOLE 01 26300 0 0
233 4400 SH DEFINED 01 4400 0 0
---------- --------
1627 30700
GAP INC DEL COM 364760108 7276 361517 SH SOLE 01 335092 150 26275
340 16873 SH DEFINED 01 16873 0 0
---------- --------
7615 378390
GARTNER GROUP INC NEW CL B 366651206 1 78 SH SOLE 01 78 0 0
158 14494 SH DEFINED 01 3688 0 10806
---------- --------
158 14572
GENERAL ELEC CO COM 369604103 72923 1264108 SH SOLE 01 1215167 0 48941
49010 849588 SH DEFINED 01 847782 1806 0
---------- --------
121933 2113696
GENERAL MLS INC COM 370334104 263 7400 SH SOLE 01 7400 0 0
---------- --------
263 7400
GENERAL MTRS CORP COM 370442105 531 8168 SH SOLE 01 8168 0 0
44 678 SH DEFINED 01 678 0 0
---------- --------
575 8846
FORM 13F
PAGE 16 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
GENERAL MTRS CORP CL H NEW 370442832 152 4100 SH SOLE 01 4100 0 0
93 2499 SH DEFINED 01 2499 0 0
---------- --------
245 6599
GETTY IMAGES INC COM 374276103 31347 1029893 SH SOLE 01 1003054 0 26839
---------- --------
31347 1029893
GILLETTE CO COM 375766102 13137 425503 SH SOLE 01 399553 600 25350
1625 52645 SH DEFINED 01 52645 0 0
---------- --------
14763 478148
GLOBAL TECHNOVATIONS INC COM 37939M109 85 97300 SH SOLE 01 97300 0 0
---------- --------
85 97300
GUIDANT CORP COM 401698105 10735 151866 SH SOLE 01 138706 200 12960
2794 39532 SH DEFINED 01 39532 0 0
---------- --------
13529 191398
GUILFORD PHARMACEUTICALS INC COM 401829106 5015 217455 SH SOLE 01 211891 0 5564
---------- --------
5015 217455
HALLIBURTON CO COM 406216101 17187 351199 SH SOLE 01 327704 300 23195
2882 58884 SH DEFINED 01 58884 0 0
---------- --------
20068 410083
HARRAHS ENTMT INC COM 413619107 2241 81500 SH SOLE 01 81500 0 0
---------- --------
2241 81500
HARRIS CORP DEL COM 413875105 230 8100 SH SOLE 01 8100 0 0
---------- --------
230 8100
HARSCO CORP COM 415864107 1339 60702 SH SOLE 01 60702 0 0
---------- --------
1339 60702
FORM 13F
PAGE 17 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
HEALTH CARE PPTY INVS INC COM 421915109 193 6500 SH SOLE 01 6500 0 0
69 2335 SH DEFINED 01 2335 0 0
---------- --------
262 8835
HELMERICH & PAYNE INC COM 423452101 569 15760 SH SOLE 01 15760 0 0
---------- --------
569 15760
HEWLETT PACKARD CO COM 428236103 8720 89897 SH SOLE 01 79587 100 10210
4965 51183 SH DEFINED 01 50251 932 0
---------- --------
13685 141080
HOME DEPOT INC COM 437076102 18520 349030 SH SOLE 01 331720 0 17310
5159 97223 SH DEFINED 01 97223 0 0
---------- --------
23679 446253
HONEYWELL INTL INC COM 438516106 16674 468045 SH SOLE 01 438369 300 29376
2653 74474 SH DEFINED 01 74474 0 0
---------- --------
19327 542519
HYPERION SOLUTIONS CORP COM 44914M104 1339 51733 SH SOLE 01 51733 0 0
150 5800 SH DEFINED 01 0 0 5800
---------- --------
1489 57533
I-MANY INC COM 44973Q103 3987 200000 SH SOLE 01 194750 0 5250
---------- --------
3987 200000
IMS HEALTH INC COM 449934108 1759 84789 SH SOLE 01 34114 0 50675
2555 123156 SH DEFINED 01 40156 0 83000
---------- --------
4315 207945
IASIAWORKS INC COM 45072L101 825 82500 SH SOLE 01 82500 0 0
---------- --------
825 82500
ILLINOIS TOOL WKS INC COM 452308109 68 1225 SH SOLE 01 1225 0 0
279 5000 SH DEFINED 01 5000 0 0
---------- --------
348 6225
FORM 13F
PAGE 18 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
INCYTE GENOMICS INC COM 45337C102 27533 669498 SH SOLE 01 649106 0 20392
185 4510 SH DEFINED 01 4510 0 0
---------- --------
27719 674008
INGERSOLL-RAND CO COM 456866102 859 25345 SH SOLE 01 21345 0 4000
119 3502 SH DEFINED 01 3502 0 0
---------- --------
977 28847
INHALE THERAPEUTIC SYS INC COM 457191104 479 8500 SH SOLE 01 8500 0 0
---------- --------
479 8500
INKTOMI CORP COM 457277101 179 1572 SH SOLE 01 1572 0 0
148 1300 SH DEFINED 01 1300 0 0
---------- --------
327 2872
INTEL CORP COM 458140100 34752 836158 SH SOLE 01 794678 0 41480
12908 310567 SH DEFINED 01 307147 3200 220
---------- --------
47660 1146725
INTERNATIONAL BUSINESS MACHS COM 459200101 16634 147855 SH SOLE 01 147835 0 20
5462 48550 SH DEFINED 01 48550 0 0
---------- --------
22096 196405
INTERNATIONAL FLAVORS&FRAGRANC COM 459506101 102 5575 SH SOLE 01 5575 0 0
253 13875 SH DEFINED 01 13875 0 0
---------- --------
355 19450
INTL PAPER CO COM 460146103 119 4143 SH SOLE 01 4143 0 0
297 10352 SH DEFINED 01 10352 0 0
---------- --------
416 14495
INTERPUBLIC GROUP COS INC COM 460690100 562 16489 SH SOLE 01 13987 0 2502
---------- --------
562 16489
FORM 13F
PAGE 19 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
INTUIT COM 461202103 479 8400 SH SOLE 01 8400 0 0
29 500 SH DEFINED 01 500 0 0
---------- --------
507 8900
ISHARES TR S&P 500 INDEX 464287200 581 4045 SH SOLE 01 4045 0 0
---------- --------
581 4045
I2 TECHNOLOGIES INC COM 465754109 65189 348491 SH SOLE 01 339394 0 9097
617 3300 SH DEFINED 01 3300 0 0
---------- --------
65807 351791
JOHNSON & JOHNSON COM 478160104 16432 174929 SH SOLE 01 148119 15125 11685
11784 125444 SH DEFINED 01 124544 900 0
---------- --------
28216 300373
JUNIPER NETWORKS INC COM 48203R104 842 3848 SH SOLE 01 3848 0 0
---------- --------
842 3848
KEYCORP NEW COM 493267108 18 722 SH SOLE 01 722 0 0
218 8600 SH DEFINED 01 8600 0 0
---------- --------
236 9322
KEYNOTE SYS INC COM 493308100 16262 607938 SH SOLE 01 592038 0 15900
---------- --------
16262 607938
KIMBERLY CLARK CORP COM 494368103 535 9589 SH SOLE 01 9589 0 0
383 6870 SH DEFINED 01 6870 0 0
---------- --------
919 16459
KRISPY KREME DOUGHNUTS INC COM 501014104 4276 51056 SH SOLE 01 49668 0 1388
---------- --------
4276 51056
LSI LOGIC CORP COM 502161102 300 10250 SH SOLE 01 10250 0 0
---------- --------
300 10250
FORM 13F
PAGE 20 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
LATITUDE COMMUNICATIONS INC COM 518292107 9375 1209717 SH SOLE 01 1178002 0 31715
---------- --------
9375 1209717
LEGG MASON INC COM 524901105 3960 68125 SH DEFINED 01 68125 0 0
---------- --------
3960 68125
LILLY ELI & CO COM 532457108 2953 36405 SH SOLE 01 35155 0 1250
2845 35070 SH DEFINED 01 35070 0 0
---------- --------
5798 71475
LINCOLN NATL CORP IND COM 534187109 241 5000 SH SOLE 01 5000 0 0
94 1944 SH DEFINED 01 1944 0 0
---------- --------
334 6944
LINEAR TECHNOLOGY CORP COM 535678106 9516 146965 SH SOLE 01 135400 275 11290
1229 18975 SH DEFINED 01 18975 0 0
---------- --------
10745 165940
LOCKHEED MARTIN CORP COM 539830109 405 12282 SH SOLE 01 12282 0 0
155 4702 SH DEFINED 01 4702 0 0
---------- --------
560 16984
LOEWS CORP COM 540424108 2168 26000 SH SOLE 01 26000 0 0
---------- --------
2168 26000
LOWES COS INC COM 548661107 12161 271001 SH SOLE 01 254566 300 16135
2154 47995 SH DEFINED 01 46685 1310 0
---------- --------
14315 318996
LUCENT TECHNOLOGIES INC COM 549463107 13300 435177 SH SOLE 01 417493 0 17684
3381 110616 SH DEFINED 01 109590 836 190
---------- --------
16681 545793
MBIA INC COM 55262C100 4694 66000 SH SOLE 01 66000 0 0
---------- --------
4694 66000
FORM 13F
PAGE 21 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
MBNA CORP COM 55262L100 15605 405334 SH SOLE 01 365766 300 39268
6890 178958 SH DEFINED 01 176106 2852 0
---------- --------
22495 584292
MARSH & MCLENNAN COS INC COM 571748102 119 900 SH SOLE 01 900 0 0
1076 8109 SH DEFINED 01 8109 0 0
---------- --------
1196 9009
MARRIOTT INTL INC NEW CL A 571903202 5890 161647 SH SOLE 01 156932 150 4565
396 10865 SH DEFINED 01 10865 0 0
---------- --------
6286 172512
MASCO CORP COM 574599106 721 38725 SH SOLE 01 30025 0 8700
---------- --------
721 38725
MCCORMICK & CO INC COM NON VTG 579780206 94 3149 SH SOLE 01 3055 0 94
202 6800 SH DEFINED 01 6800 0 0
---------- --------
296 9949
MCDONALDS CORP COM 580135101 2014 66709 SH SOLE 01 52209 0 14500
1179 39072 SH DEFINED 01 39072 0 0
---------- --------
3193 105781
MCGRAW HILL COS INC COM 580645109 242 3800 SH SOLE 01 3800 0 0
89 1400 SH DEFINED 01 1400 0 0
---------- --------
331 5200
MCKESSON HBOC INC COM 58155Q103 2 78 SH SOLE 01 78 0 0
2613 85500 SH DEFINED 01 85500 0 0
---------- --------
2615 85578
MEDTRONIC INC COM 585055106 16766 323601 SH SOLE 01 301926 200 21475
2157 41635 SH DEFINED 01 41635 0 0
---------- --------
18924 365236
FORM 13F
PAGE 22 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
MELLON FINL CORP COM 58551A108 219 4712 SH SOLE 01 4712 0 0
38 820 SH DEFINED 01 820 0 0
---------- --------
257 5532
MEMBERWORKS INC COM 586002107 36983 1124972 SH SOLE 01 1095466 0 29506
---------- --------
36983 1124972
MERCANTILE BANKSHARES CORP COM 587405101 2502 68934 SH SOLE 01 65059 0 3875
1667 45930 SH DEFINED 01 45930 0 0
---------- --------
4169 114864
MERCK & CO INC COM 589331107 24456 328549 SH SOLE 01 311619 0 16930
17427 234122 SH DEFINED 01 233156 966 0
---------- --------
41884 562671
METATEC INTL INC COM 591398102 154 63334 SH SOLE 01 63334 0 0
---------- --------
154 63334
METROMEDIA FIBER NETWORK INC CL A 591689104 294 12100 SH SOLE 01 12100 0 0
---------- --------
294 12100
METTLER TOLEDO INTERNATIONAL COM 592688105 497 11300 SH SOLE 01 11300 0 0
79 1800 SH DEFINED 01 1800 0 0
---------- --------
576 13100
MICROSOFT CORP COM 594918104 30988 513793 SH SOLE 01 485993 200 27600
8362 138642 SH DEFINED 01 138642 0 0
---------- --------
39350 652435
MICROSTRATEGY INC CL A 594972101 1371 50200 SH SOLE 01 50200 0 0
158 5800 SH DEFINED 01 0 0 5800
---------- --------
1529 56000
MICROCELL TELECOMMUNICATIONS CL B NON VTG 59501T304 262 9000 SH SOLE 01 9000 0 0
---------- --------
262 9000
FORM 13F
PAGE 23 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
MICROCHIP TECHNOLOGY INC COM 595017104 300 9075 SH SOLE 01 9075 0 0
---------- --------
300 9075
MINNESOTA MNG & MFG CO COM 604059105 1295 14213 SH SOLE 01 14213 0 0
1327 14563 SH DEFINED 01 14563 0 0
---------- --------
2622 28776
MORGAN J P & CO INC COM 616880100 1190 7285 SH SOLE 01 7285 0 0
1706 10441 SH DEFINED 01 10441 0 0
---------- --------
2896 17726
MORGAN STANLEY DEAN WITTER&CO COM NEW 617446448 161 1760 SH SOLE 01 1760 0 0
130 1420 SH DEFINED 01 1420 0 0
---------- --------
291 3180
MOTOROLA INC COM 620076109 2309 81749 SH SOLE 01 81749 0 0
697 24682 SH DEFINED 01 24682 0 0
---------- --------
3007 106431
NET PERCEPTIONS INC COM 64107U101 3340 707772 SH SOLE 01 689487 0 18285
---------- --------
3340 707772
NETWORK ENGINES INC COM 64121A107 307 7500 SH SOLE 01 7500 0 0
---------- --------
307 7500
NEXTEL COMMUNICATIONS INC CL A 65332V103 2439 52189 SH SOLE 01 52189 0 0
---------- --------
2439 52189
NEXTLINK COMMUNICATIONS INC CL A 65333H707 303 8620 SH SOLE 01 8620 0 0
---------- --------
303 8620
NOBLE AFFILIATES INC COM 654894104 453 12200 SH SOLE 01 12200 0 0
---------- --------
453 12200
FORM 13F
PAGE 24 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
NOKIA CORP SPONSORED ADR 654902204 231 5810 SH SOLE 01 5810 0 0
96 2400 SH DEFINED 01 2400 0 0
---------- --------
327 8210
NORFOLK SOUTHERN CORP COM 655844108 66 4500 SH SOLE 01 4500 0 0
342 23400 SH DEFINED 01 23400 0 0
---------- --------
408 27900
NORTEL NETWORKS CORP NEW COM 656568102 155 2606 SH SOLE 01 2606 0 0
179 3000 SH DEFINED 01 3000 0 0
---------- --------
334 5606
NORTHROP GRUMMAN CORP COM 666807102 454 5000 SH SOLE 01 5000 0 0
---------- --------
454 5000
NOVADIGM INC COM 669937104 10874 702286 SH SOLE 01 684666 0 17620
---------- --------
10874 702286
NOVELL INC COM 670006105 2314 232900 SH SOLE 01 232900 0 0
---------- --------
2314 232900
O CHARLEYS INC COM 670823103 22731 1846249 SH SOLE 01 1798931 0 47318
---------- --------
22731 1846249
NUVEEN MUN VALUE FD INC COM 670928100 13 1500 SH SOLE 01 1500 0 0
80 9198 SH DEFINED 01 9198 0 0
---------- --------
93 10698
NUVEEN PA INVT QUALITY MUN FD COM 670972108 434 30345 SH DEFINED 01 30345 0 0
---------- --------
434 30345
OTG SOFTWARE INC COM 671059103 327 8000 SH SOLE 01 8000 0 0
---------- --------
327 8000
FORM 13F
PAGE 25 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
ORACLE CORP COM 68389X105 20029 254340 SH SOLE 01 236765 175 17400
6457 81993 SH DEFINED 01 81858 0 135
---------- --------
26486 336333
OUTBACK STEAKHOUSE INC COM 689899102 10478 386275 SH SOLE 01 367660 350 18265
590 21750 SH DEFINED 01 21750 0 0
---------- --------
11068 408025
OXFORD HEALTH PLANS INC COM 691471106 307 10000 SH SOLE 01 10000 0 0
---------- --------
307 10000
PECO ENERGY CO COM 693304107 333 5500 SH SOLE 01 5500 0 0
---------- --------
333 5500
PE CORP COM PE BIO GRP 69332S102 959 8228 SH SOLE 01 8228 0 0
---------- --------
959 8228
PE CORP CELERA GEN GRP 69332S201 227 2277 SH SOLE 01 2277 0 0
---------- --------
227 2277
PPG INDS INC COM 693506107 951 23963 SH SOLE 01 23963 0 0
295 7443 SH DEFINED 01 7443 0 0
---------- --------
1246 31406
PALM INC COM 696642107 432 8157 SH SOLE 01 8157 0 0
---------- --------
432 8157
PAPA JOHNS INTL INC COM 698813102 27740 1106852 SH SOLE 01 1077901 0 28951
---------- --------
27740 1106852
PARAMETRIC TECHNOLOGY CORP COM 699173100 13300 1216096 SH SOLE 01 1140511 2200 73385
1313 120078 SH DEFINED 01 116755 0 3323
---------- --------
14614 1336174
FORM 13F
PAGE 26 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
PAYCHEX INC COM 704326107 1648 31399 SH SOLE 01 31399 0 0
---------- --------
1648 31399
PEAPOD INC COM 704718105 55 40633 SH SOLE 01 40633 0 0
7 5300 SH DEFINED 01 0 0 5300
---------- --------
62 45933
PENTAIR INC COM 709631105 776 29000 SH SOLE 01 22500 0 6500
---------- --------
776 29000
PENTON MEDIA INC COM 709668107 23 825 SH SOLE 01 825 0 0
3685 134000 SH DEFINED 01 134000 0 0
---------- --------
3708 134825
PEPSICO INC COM 713448108 1763 38325 SH SOLE 01 38125 0 200
1100 23914 SH DEFINED 01 23914 0 0
---------- --------
2863 62239
PFIZER INC COM 717081103 34411 765758 SH SOLE 01 692736 26429 46593
11115 247341 SH DEFINED 01 247341 0 0
---------- --------
45526 1013099
PHARMACIA CORP COM 71713U102 301 5000 SH SOLE 01 5000 0 0
76 1257 SH DEFINED 01 1257 0 0
---------- --------
377 6257
PHILIP MORRIS COS INC COM 718154107 4118 139890 SH SOLE 01 139890 0 0
1089 37000 SH DEFINED 01 37000 0 0
---------- --------
5207 176890
PHILLIPS PETE CO COM 718507106 69 1094 SH SOLE 01 1094 0 0
354 5646 SH DEFINED 01 5646 0 0
---------- --------
423 6740
FORM 13F
PAGE 27 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
PRAXAIR INC COM 74005P104 409 10934 SH SOLE 01 10124 0 810
8 210 SH DEFINED 01 210 0 0
---------- --------
417 11144
PRAECIS PHARMACEUTICAL INC COM 739421105 223 5300 SH SOLE 01 5300 0 0
---------- --------
223 5300
PRICE T ROWE & ASSOCIATES COM 741477103 1272 27098 SH SOLE 01 22798 0 4300
510 10875 SH DEFINED 01 10875 0 0
---------- --------
1782 37973
PRICELINE COM INC COM 741503106 133 11200 SH SOLE 01 11200 0 0
5 400 SH DEFINED 01 400 0 0
---------- --------
138 11600
PROCTER & GAMBLE CO COM 742718109 4543 67803 SH SOLE 01 64403 0 3400
5200 77618 SH DEFINED 01 76568 1050 0
---------- --------
9743 145421
PROTECTIVE LIFE CORP COM 743674103 1085 36329 SH SOLE 01 36329 0 0
1147 38392 SH DEFINED 01 38392 0 0
---------- --------
2232 74721
QRS CORP COM 74726X105 24509 1627200 SH SOLE 01 1587584 0 39616
283 18800 SH DEFINED 01 18800 0 0
---------- --------
24792 1646000
QUALCOMM INC COM 747525103 3846 53976 SH SOLE 01 53976 0 0
---------- --------
3846 53976
QWEST COMMUNICATIONS INTL INC COM 749121109 23592 490860 SH SOLE 01 455133 150 35577
2160 44943 SH DEFINED 01 44703 0 240
---------- --------
25752 535803
R H DONNELLEY CORP COM NEW 74955W307 298 14095 SH DEFINED 01 11795 0 2300
---------- --------
298 14095
FORM 13F
PAGE 28 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
RSA SEC INC COM 749719100 57133 1324822 SH SOLE 01 1286182 0 38640
306 7100 SH DEFINED 01 7100 0 0
---------- --------
57439 1331922
RWD TECHNOLOGIES INC COM 74975B101 6010 701337 SH SOLE 01 701337 0 0
---------- --------
6010 701337
RAILWORKS CORP COM 750789109 4552 1324544 SH SOLE 01 1291716 0 32828
---------- --------
4552 1324544
RATIONAL SOFTWARE CORP COM NEW 75409P202 5946 85710 SH SOLE 01 85710 0 0
1417 20420 SH DEFINED 01 0 0 20420
---------- --------
7363 106130
REPUBLIC SVCS INC COM 760759100 276 21000 SH SOLE 01 21000 0 0
---------- --------
276 21000
ROHM & HAAS CO COM 775371107 3896 134048 SH SOLE 01 112948 300 20800
185 6364 SH DEFINED 01 6364 0 0
---------- --------
4081 140412
ROUSE CO COM 779273101 739 29620 SH SOLE 01 29620 0 0
299 12000 SH DEFINED 01 12000 0 0
---------- --------
1038 41620
ROYAL DUTCH PETE CO NY REG GLD1.25 780257804 2426 40473 SH SOLE 01 40473 0 0
324 5400 SH DEFINED 01 5400 0 0
---------- --------
2749 45873
SBC COMMUNICATIONS INC COM 78387G103 10832 216632 SH SOLE 01 202092 0 14540
3547 70937 SH DEFINED 01 69877 1060 0
---------- --------
14378 287569
SBA COMMUNICATIONS CORP COM 78388J106 2590 61755 SH SOLE 01 61755 0 0
164 3900 SH DEFINED 01 0 0 3900
---------- --------
2753 65655
FORM 13F
PAGE 29 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
SABRE HLDGS CORP CL A 785905100 1143 39500 SH SOLE 01 39500 0 0
---------- --------
1143 39500
SAFEWAY INC COM NEW 786514208 10605 227150 SH SOLE 01 209110 0 18040
784 16795 SH DEFINED 01 16795 0 0
---------- --------
11389 243945
SANDY SPRING BANCORP INC COM 800363103 317 12692 SH DEFINED 01 12692 0 0
---------- --------
317 12692
SARA LEE CORP COM 803111103 574 28256 SH SOLE 01 28256 0 0
268 13200 SH DEFINED 01 13200 0 0
---------- --------
842 41456
SCHERING PLOUGH CORP COM 806605101 3237 69621 SH SOLE 01 67921 0 1700
7339 157818 SH DEFINED 01 157818 0 0
---------- --------
10576 227439
SCHLUMBERGER LTD COM 806857108 2050 24901 SH SOLE 01 24901 0 0
1102 13388 SH DEFINED 01 13388 0 0
---------- --------
3152 38289
SCHWAB CHARLES CORP NEW COM 808513105 940 26465 SH SOLE 01 26460 0 5
---------- --------
940 26465
SCIQUEST COM INC COM 80908Q107 97 14000 SH SOLE 01 14000 0 0
---------- --------
97 14000
SERVICEMASTER CO COM 81760N109 141 14302 SH SOLE 01 14302 0 0
---------- --------
141 14302
SITEL CORP COM 82980K107 5643 1921225 SH SOLE 01 1872270 0 48955
---------- --------
5643 1921225
FORM 13F
PAGE 30 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
SIPEX CORP COM 829909100 90530 2152297 SH SOLE 01 2097807 0 54490
446 10600 SH DEFINED 01 10600 0 0
---------- --------
90976 2162897
SMITHKLINE BEECHAM PLC ADR REP ORD 832378301 436 6356 SH SOLE 01 6356 0 0
5432 79156 SH DEFINED 01 79156 0 0
---------- --------
5868 85512
SOLECTRON CORP COM 834182107 18970 411281 SH SOLE 01 394016 150 17115
1155 25040 SH DEFINED 01 24850 0 190
---------- --------
20125 436321
SONOSITE INC COM 83568G104 5389 288400 SH SOLE 01 280900 0 7500
---------- --------
5389 288400
SONY CORP ADR NEW 835699307 404 4000 SH DEFINED 01 4000 0 0
---------- --------
404 4000
SOUTHERN CO COM 842587107 403 12435 SH SOLE 01 12435 0 0
26 800 SH DEFINED 01 800 0 0
---------- --------
429 13235
SPEEDFAM-IPEC INC COM 847705100 958 83720 SH DEFINED 01 83720 0 0
---------- --------
958 83720
SPRINT CORP COM FON GROUP 852061100 6894 235200 SH SOLE 01 219730 0 15470
359 12255 SH DEFINED 01 12255 0 0
---------- --------
7253 247455
STAPLES INC COM 855030102 745 52505 SH SOLE 01 52505 0 0
159 11187 SH DEFINED 01 11187 0 0
---------- --------
904 63692
STARBUCKS CORP COM 855244109 28860 720381 SH SOLE 01 701707 0 18674
---------- --------
28860 720381
FORM 13F
PAGE 31 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
STATE STR CORP COM 857477103 2477 19050 SH SOLE 01 9950 0 9100
130 1000 SH DEFINED 01 1000 0 0
---------- --------
2607 20050
STRYKER CORP COM 863667101 601 14000 SH SOLE 01 4000 0 10000
19 448 SH DEFINED 01 448 0 0
---------- --------
620 14448
SUN MICROSYSTEMS INC COM 866810104 3152 27000 SH SOLE 01 27000 0 0
1054 9030 SH DEFINED 01 8900 0 130
---------- --------
4207 36030
SUNGARD DATA SYS INC COM 867363103 428 10000 SH SOLE 01 10000 0 0
---------- --------
428 10000
SUNRISE ASSISTED LIVING INC COM 86768K106 42592 1963921 SH SOLE 01 1912051 0 51870
---------- --------
42592 1963921
SUNTRUST BKS INC COM 867914103 183 3675 SH SOLE 01 3675 0 0
236 4733 SH DEFINED 01 4733 0 0
---------- --------
419 8408
SYLVAN LEARNING SYSTEMS INC COM 871399101 2202 148700 SH SOLE 01 148700 0 0
---------- --------
2202 148700
SYNAVANT INC COM 87157A105 28 4197 SH SOLE 01 1664 0 2533
41 6156 SH DEFINED 01 2006 0 4150
---------- --------
69 10353
SYNOPSYS INC COM 871607107 30130 795513 SH SOLE 01 775508 0 20005
263 6950 SH DEFINED 01 6950 0 0
---------- --------
30393 802463
SYSCO CORP COM 871829107 1293 27910 SH SOLE 01 17410 0 10500
130 2800 SH DEFINED 01 2800 0 0
---------- --------
1422 30710
FORM 13F
PAGE 32 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
TJX COS INC NEW COM 872540109 2833 125900 SH SOLE 01 125900 0 0
117 5200 SH DEFINED 01 5200 0 0
---------- --------
2950 131100
TARGET CORP COM 87612E106 9057 353436 SH SOLE 01 333496 450 19490
1213 47354 SH DEFINED 01 47354 0 0
---------- --------
10270 400790
TEKELEC COM 879101103 52819 1606653 SH SOLE 01 1560583 0 46070
275 8350 SH DEFINED 01 8350 0 0
---------- --------
53093 1615003
TELEPHONE & DATA SYS INC COM 879433100 675 6100 SH SOLE 01 6100 0 0
---------- --------
675 6100
TERAYON COMMUNICATION SYS COM 880775101 128 3780 SH SOLE 01 0 0 3780
165 4850 SH DEFINED 01 4850 0 0
---------- --------
293 8630
TETRA TECH INC COM 88162G103 25830 904328 SH SOLE 01 904328 0 0
---------- --------
25830 904328
TEXACO INC COM 881694103 358 6820 SH SOLE 01 6420 0 400
269 5122 SH DEFINED 01 5122 0 0
---------- --------
627 11942
TEXAS INSTRS INC COM 882508104 17851 378310 SH SOLE 01 347310 150 30850
3023 64066 SH DEFINED 01 63856 0 210
---------- --------
20874 442376
TIME WARNER INC COM 887315109 160 2040 SH SOLE 01 2040 0 0
454 5800 SH DEFINED 01 5800 0 0
---------- --------
613 7840
TOOTSIE ROLL INDS INC COM 890516107 47 1191 SH SOLE 01 1184 0 7
175 4464 SH DEFINED 01 4464 0 0
---------- --------
222 5655
FORM 13F
PAGE 33 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
TREX INC COM 89531P105 13920 459221 SH SOLE 01 447171 0 12050
---------- --------
13920 459221
TRIBUNE CO NEW COM 896047107 217 4977 SH DEFINED 01 4977 0 0
---------- --------
217 4977
TRIPATH TECHNOLOGY INC COM 89672P104 382 15000 SH SOLE 01 14600 0 400
---------- --------
382 15000
TYCO INTL LTD NEW COM 902124106 33782 651209 SH SOLE 01 605123 300 45786
2563 49405 SH DEFINED 01 49405 0 0
---------- --------
36344 700614
U S G CORP COM NEW 903293405 1378 55000 SH SOLE 01 55000 0 0
---------- --------
1378 55000
US ONCOLOGY INC COM 90338W103 33369 7364703 SH SOLE 01 7170818 0 193885
---------- --------
33369 7364703
UNILEVER N V N Y SHS NEW 904784709 26 535 SH SOLE 01 535 0 0
297 6159 SH DEFINED 01 6159 0 0
---------- --------
323 6694
UNION PAC CORP COM 907818108 162 4165 SH SOLE 01 4165 0 0
132 3390 SH DEFINED 01 3390 0 0
---------- --------
294 7555
UNITED TECHNOLOGIES CORP COM 913017109 1627 23500 SH SOLE 01 23500 0 0
319 4600 SH DEFINED 01 4600 0 0
---------- --------
1946 28100
USINTERNETWORKING INC COM 917311805 109 16402 SH SOLE 01 537 0 15865
133 19955 SH DEFINED 01 19750 0 205
---------- --------
243 36357
FORM 13F
PAGE 34 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
VEECO INSTRS INC DEL COM 922417100 4447 41852 SH DEFINED 01 41852 0 0
---------- --------
4447 41852
VERISIGN INC COM 92343E102 243 1200 SH DEFINED 01 1200 0 0
---------- --------
243 1200
VERIZON COMMUNICATIONS COM 92343V104 9135 188599 SH SOLE 01 175412 122 13065
2375 49036 SH DEFINED 01 49036 0 0
---------- --------
11510 237635
VIACOM INC CL B 925524308 18918 323378 SH SOLE 01 43936 0 279442
44 759 SH DEFINED 01 759 0 0
---------- --------
18962 324137
VICOR CORP COM 925815102 5223 96280 SH SOLE 01 96280 0 0
456 8400 SH DEFINED 01 0 0 8400
---------- --------
5679 104680
VISUAL NETWORKS INC COM 928444108 237 35939 SH SOLE 01 35939 0 0
---------- --------
237 35939
VITESSE SEMICONDUCTOR CORP COM 928497106 4340 48800 SH SOLE 01 48800 0 0
---------- --------
4340 48800
VODAFONE GROUP PLC NEW SPONSORED ADR 92857W100 1356 36660 SH SOLE 01 33910 0 2750
390 10540 SH DEFINED 01 10540 0 0
---------- --------
1746 47200
WACHOVIA CORP COM 929771103 473 8350 SH SOLE 01 8350 0 0
100 1756 SH DEFINED 01 1756 0 0
---------- --------
573 10106
WAL MART STORES INC COM 931142103 4242 88150 SH SOLE 01 88150 0 0
735 15276 SH DEFINED 01 15276 0 0
---------- --------
4977 103426
FORM 13F
PAGE 35 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
WALGREEN CO COM 931422109 1244 32800 SH SOLE 01 9300 0 23500
152 4000 SH DEFINED 01 4000 0 0
---------- --------
1396 36800
WATERS CORP COM 941848103 534 6000 SH SOLE 01 6000 0 0
107 1200 SH DEFINED 01 1200 0 0
---------- --------
641 7200
WELLPOINT HEALTH NETWORK NEW COM 94973H108 3494 36400 SH SOLE 01 36400 0 0
---------- --------
3494 36400
WELLS FARGO & CO NEW COM 949746101 19438 423153 SH SOLE 01 399228 300 23625
3260 70969 SH DEFINED 01 70969 0 0
---------- --------
22698 494122
WESTPOINT STEVENS INC COM 961238102 1768 144300 SH SOLE 01 144300 0 0
---------- --------
1768 144300
WESTVACO CORP COM 961548104 1346 50425 SH SOLE 01 50425 0 0
48 1800 SH DEFINED 01 1800 0 0
---------- --------
1394 52225
WHOLE FOODS MKT INC COM 966837106 395 7350 SH SOLE 01 7350 0 0
32 600 SH DEFINED 01 600 0 0
---------- --------
427 7950
WILEY JOHN & SONS INC CL A 968223206 459 20000 SH SOLE 01 20000 0 0
---------- --------
459 20000
WILLIAMS COS INC DEL COM 969457100 147 3472 SH SOLE 01 3472 0 0
348 8238 SH DEFINED 01 8238 0 0
---------- --------
495 11710
WIND RIVER SYSTEMS INC COM 973149107 82679 1724741 SH SOLE 01 1680781 0 43960
776 16192 SH DEFINED 01 8096 0 8096
---------- --------
83455 1740933
FORM 13F
PAGE 36 OF 36 NAME OF REPORTING MANAGER:BROWN INVESTMENT ADVISORY & TRUST CO AS OF 09/30/00
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
WORLDCOM INC GA NEW COM 98157D106 22867 752834 SH SOLE 01 709549 550 42735
4911 161664 SH DEFINED 01 161664 0 0
---------- --------
27778 914498
XEROX CORP COM 984121103 1737 115300 SH SOLE 01 115300 0 0
2 126 SH DEFINED 01 126 0 0
---------- --------
1739 115426
ZEMEX CDA CORP COM 988910105 411 55785 SH SOLE 01 55785 0 0
---------- --------
411 55785
GRAND TOTAL 3254423 TOTAL ENTRIES 569
</TABLE>
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