Brown Advisory’s Biogen BIIB Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $1.25M | Sell |
6,844
-347
| -5% | -$63.9K | ﹤0.01% | 781 |
|
|
2025
Q4 | $1.27M | Sell |
7,191
-22
| -0.3% | -$3.59K | ﹤0.01% | 778 |
|
|
2025
Q3 | $1.01M | Sell |
7,213
-18
| -0.2% | -$2.43K | ﹤0.01% | 834 |
|
|
2025
Q2 | $908K | Sell |
7,231
-26
| -0.4% | -$3.24K | ﹤0.01% | 834 |
|
|
2025
Q1 | $993K | Sell |
7,257
-340,309
| -98% | -$48.6M | ﹤0.01% | 790 |
|
|
2024
Q4 | $53.1M | Buy |
347,566
+14,339
| +4% | +$2.42M | 0.07% | 197 |
|
|
2024
Q3 | $64.6M | Sell |
333,227
-14,291
| -4% | -$2.99M | 0.08% | 179 |
|
|
2024
Q2 | $80.6M | Buy |
347,518
+74,638
| +27% | +$16.2M | 0.11% | 147 |
|
|
2024
Q1 | $58.8M | Buy |
272,880
+101,576
| +59% | +$23.8M | 0.08% | 186 |
|
|
2023
Q4 | $44.3M | Buy |
171,304
+2,282
| +1% | +$560K | 0.06% | 218 |
|
|
2023
Q3 | $43.4M | Buy |
169,022
+4,219
| +3% | +$1.13M | 0.07% | 203 |
|
|
2023
Q2 | $46.9M | Buy |
164,803
+3,590
| +2% | +$1.07M | 0.07% | 196 |
|
|
2023
Q1 | $44.8M | Buy |
161,213
+11,582
| +8% | +$3.2M | 0.08% | 207 |
|
|
2022
Q4 | $41.4M | Buy |
149,631
+24,231
| +19% | +$6.84M | 0.08% | 216 |
|
|
2022
Q3 | $33.5M | Buy |
125,400
+9,025
| +8% | +$1.92M | 0.07% | 233 |
|
|
2022
Q2 | $23.7M | Buy |
116,375
+7,240
| +7% | +$1.48M | 0.04% | 279 |
|
|
2022
Q1 | $23M | Sell |
109,135
-90,191
| -45% | -$19.6M | 0.03% | 299 |
|
|
2021
Q4 | $47.8M | Buy |
199,326
+143,819
| +259% | +$37M | 0.06% | 226 |
|
|
2021
Q3 | $15.7M | Buy |
55,507
+43,163
| +350% | +$14.1M | 0.02% | 329 |
|
|
2021
Q2 | $4.28M | Buy |
12,344
+3,953
| +47% | +$1.2M | 0.01% | 482 |
|
|
2021
Q1 | $2.35M | Buy |
8,391
+3,936
| +88% | +$1.06M | ﹤0.01% | 574 |
|
|
2020
Q4 | $1.09M | Sell |
4,455
-95
| -2% | -$24.5K | ﹤0.01% | 639 |
|
|
2020
Q3 | $1.29M | Buy |
4,550
+124
| +3% | +$34.6K | ﹤0.01% | 577 |
|
|
2020
Q2 | $1.18M | Sell |
4,426
-1,010
| -19% | -$304K | ﹤0.01% | 563 |
|
|
2020
Q1 | $1.72M | Sell |
5,436
-842
| -13% | -$256K | 0.01% | 494 |
|
|
2019
Q4 | $1.86M | Sell |
6,278
-174
| -3% | -$48.3K | ﹤0.01% | 530 |
|
|
2019
Q3 | $1.5M | Sell |
6,452
-173
| -3% | -$40.3K | ﹤0.01% | 563 |
|
|
2019
Q2 | $1.55M | Sell |
6,625
-1,337
| -17% | -$309K | ﹤0.01% | 566 |
|
|
2019
Q1 | $1.88M | Sell |
7,962
-3,997
| -33% | -$1.26M | 0.01% | 649 |
|
|
2018
Q4 | $3.6M | Buy |
11,959
+311
| +3% | +$99.3K | 0.01% | 472 |
|
|
2018
Q3 | $4.12M | Sell |
11,648
-786
| -6% | -$271K | 0.01% | 486 |
|
|
2018
Q2 | $3.61M | Buy |
12,434
+139
| +1% | +$39.1K | 0.01% | 513 |
|
|
2018
Q1 | $3.37M | Buy |
12,295
+4,339
| +55% | +$1.35M | 0.01% | 453 |
|
|
2017
Q4 | $2.53M | Buy |
7,956
+152
| +2% | +$48.8K | 0.01% | 498 |
|
|
2017
Q3 | $2.44M | Sell |
7,804
-4,942
| -39% | -$1.46M | 0.01% | 489 |
|
|
2017
Q2 | $3.46M | Buy |
12,746
+5,528
| +77% | +$1.46M | 0.01% | 464 |
|
|
2017
Q1 | $1.97M | Sell |
7,218
-437
| -6% | -$124K | 0.01% | 518 |
|
|
2016
Q4 | $2.17M | Sell |
7,655
-117
| -2% | -$34.7K | 0.01% | 499 |
|
|
2016
Q3 | $2.43M | Sell |
7,772
-4,259
| -35% | -$1.26M | 0.01% | 471 |
|
|
2016
Q2 | $2.91M | Buy |
12,031
+4,383
| +57% | +$1.16M | 0.01% | 431 |
|
|
2016
Q1 | $1.99M | Sell |
7,648
-2,108
| -22% | -$557K | 0.01% | 476 |
|
|
2015
Q4 | $2.99M | Sell |
9,756
-4,071
| -29% | -$1.17M | 0.01% | 427 |
|
|
2015
Q3 | $4.04M | Buy |
13,827
+2,425
| +21% | +$801K | 0.01% | 387 |
|
|
2015
Q2 | $4.61M | Buy |
11,402
+229
| +2% | +$91.9K | 0.02% | 359 |
|
|
2015
Q1 | $4.72M | Sell |
11,173
-1,279
| -10% | -$504K | 0.02% | 357 |
|
|
2014
Q4 | $4.23M | Buy |
12,452
+1,469
| +13% | +$475K | 0.01% | 368 |
|
|
2014
Q3 | $3.63M | Buy |
10,983
+76
| +0.7% | +$25.1K | 0.01% | 376 |
|
|
2014
Q2 | $3.44M | Sell |
10,907
-1,544
| -12% | -$465K | 0.01% | 384 |
|
|
2014
Q1 | $3.81M | Sell |
12,451
-1,003
| -7% | -$318K | 0.01% | 362 |
|
|
2013
Q4 | $3.76M | Sell |
13,454
-851
| -6% | -$220K | 0.01% | 354 |
|
|
2013
Q3 | $3.44M | Sell |
14,305
-92
| -0.6% | -$20.6K | 0.01% | 352 |
|
|
2013
Q2 | $3.1M | Buy |
+14,397
| New | +$3.08M | 0.01% | 351 |
|
Other funds holding BIIB
VCM
VPM
Brown Advisory's BIIB Position: Q1 2026 in Review
Brown Advisory reduced its Biogen (BIIB) stake by 4.8% in Q1 2026, selling an estimated $63.9K and leaving 6,844 shares worth $1.25M. The position accounts for ﹤0.01% of the portfolio, ranked #781.
Brown Advisory first reported a position in BIIB in Q2 2013 and has held it in 52 quarters since. The position peaked at $80.6M in Q2 2024. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.
- Brown Advisory held 6,844 shares of Biogen worth $1.25M as of Q1 2026.
- Brown Advisory sold 347 Biogen shares in Q1 2026, an estimated $63.9K.
- Biogen made up ﹤0.01% of Brown Advisory's portfolio in Q1 2026, its #781 holding.
- Brown Advisory first reported a position in Biogen in Q2 2013 and has held it in 52 quarters since.
- Brown Advisory's Biogen position peaked at $80.6M in Q2 2024.
- 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.
Based on Brown Advisory's 13F filing for Q1 2026, filed 15 May 2026.