Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $271M | Sell |
1,255,168
-122,400
| -9% | -$23.4M | 0.05% | 314 |
|
|
2026
Q1 | $253M | Sell |
1,377,568
-13,802
| -1% | -$2.54M | 0.05% | 309 |
|
|
2025
Q4 | $245M | Sell |
1,391,370
-47,838
| -3% | -$7.82M | 0.05% | 310 |
|
|
2025
Q3 | $202M | Sell |
1,439,208
-304,001
| -17% | -$41.1M | 0.04% | 353 |
|
|
2025
Q2 | $219M | Buy |
1,743,209
+232,823
| +15% | +$29M | 0.04% | 375 |
|
|
2025
Q1 | $207M | Sell |
1,510,386
-23,427
| -2% | -$3.35M | 0.05% | 355 |
|
|
2024
Q4 | $235M | Buy |
1,533,813
+381,122
| +33% | +$64.3M | 0.05% | 326 |
|
|
2024
Q3 | $223M | Buy |
1,152,691
+18,905
| +2% | +$3.96M | 0.06% | 318 |
|
|
2024
Q2 | $263M | Buy |
1,133,786
+161,643
| +17% | +$35.1M | 0.08% | 242 |
|
|
2024
Q1 | $210M | Sell |
972,143
-42,440
| -4% | -$9.94M | 0.07% | 268 |
|
|
2023
Q4 | $263M | Sell |
1,014,583
-50,935
| -5% | -$12.5M | 0.1% | 206 |
|
|
2023
Q3 | $274M | Sell |
1,065,518
-49,084
| -4% | -$13.1M | 0.12% | 167 |
|
|
2023
Q2 | $310M | Hold |
1,114,602
| – | – | 0.15% | 141 |
|
|
2023
Q1 | $310M | Buy |
1,114,602
+20,411
| +2% | +$5.65M | 0.15% | 141 |
|
|
2022
Q4 | $303M | Sell |
1,094,191
-22,265
| -2% | -$6.29M | 0.16% | 142 |
|
|
2022
Q3 | $298M | Sell |
1,116,456
-40,807
| -4% | -$8.67M | 0.17% | 131 |
|
|
2022
Q2 | $236M | Sell |
1,157,263
-6,049
| -0.5% | -$1.24M | 0.12% | 177 |
|
|
2022
Q1 | $245M | Buy |
1,163,312
+4,010
| +0.3% | +$872K | 0.11% | 210 |
|
|
2021
Q4 | $278M | Sell |
1,159,302
-85,684
| -7% | -$22M | 0.11% | 206 |
|
|
2021
Q3 | $352M | Buy |
1,244,986
+106,513
| +9% | +$34.9M | 0.15% | 151 |
|
|
2021
Q2 | $394M | Sell |
1,138,473
-21,311
| -2% | -$6.46M | 0.17% | 129 |
|
|
2021
Q1 | $324M | Sell |
1,159,784
-30,613
| -3% | -$8.26M | 0.14% | 146 |
|
|
2020
Q4 | $291M | Sell |
1,190,397
-139,251
| -10% | -$35.9M | 0.14% | 149 |
|
|
2020
Q3 | $377M | Buy |
1,329,648
+20,877
| +2% | +$5.82M | 0.2% | 101 |
|
|
2020
Q2 | $350M | Buy |
1,308,771
+214,313
| +20% | +$64.4M | 0.21% | 95 |
|
|
2020
Q1 | $346M | Sell |
1,094,458
-12,893
| -1% | -$3.91M | 0.25% | 76 |
|
|
2019
Q4 | $329M | Sell |
1,107,351
-51,798
| -4% | -$14.4M | 0.2% | 93 |
|
|
2019
Q3 | $270M | Sell |
1,159,149
-221,230
| -16% | -$51.5M | 0.18% | 112 |
|
|
2019
Q2 | $323M | Buy |
1,380,379
+84,065
| +6% | +$19.4M | 0.23% | 84 |
|
|
2019
Q1 | $306M | Buy |
1,296,314
+152,648
| +13% | +$48.1M | 0.23% | 87 |
|
|
2018
Q4 | $344M | Sell |
1,143,666
-309,228
| -21% | -$98.7M | 0.3% | 69 |
|
|
2018
Q3 | $513M | Buy |
1,452,894
+351,238
| +32% | +$121M | 0.38% | 48 |
|
|
2018
Q2 | $320M | Buy |
1,101,656
+100,390
| +10% | +$28.2M | 0.25% | 80 |
|
|
2018
Q1 | $274M | Buy |
1,001,266
+168,497
| +20% | +$52.3M | 0.22% | 98 |
|
|
2017
Q4 | $265M | Buy |
832,769
+40,922
| +5% | +$13.1M | 0.22% | 94 |
|
|
2017
Q3 | $248M | Sell |
791,847
-37,297
| -4% | -$11M | 0.23% | 96 |
|
|
2017
Q2 | $225M | Sell |
829,144
-625,734
| -43% | -$165M | 0.22% | 103 |
|
|
2017
Q1 | $398M | Sell |
1,454,878
-8,514
| -0.6% | -$2.41M | 0.41% | 47 |
|
|
2016
Q4 | $415M | Sell |
1,463,392
-65,653
| -4% | -$19.5M | 0.47% | 42 |
|
|
2016
Q3 | $479M | Buy |
1,529,045
+390,906
| +34% | +$116M | 0.52% | 38 |
|
|
2016
Q2 | $275M | Buy |
1,138,139
+13,189
| +1% | +$3.48M | 0.31% | 71 |
|
|
2016
Q1 | $293M | Buy |
1,124,950
+166,534
| +17% | +$44M | 0.34% | 63 |
|
|
2015
Q4 | $294M | Sell |
958,416
-176,084
| -16% | -$50.6M | 0.33% | 64 |
|
|
2015
Q3 | $331M | Sell |
1,134,500
-31,912
| -3% | -$10.5M | 0.37% | 59 |
|
|
2015
Q2 | $471M | Sell |
1,166,412
-5,067
| -0.4% | -$2.03M | 0.45% | 45 |
|
|
2015
Q1 | $495M | Sell |
1,171,479
-53,191
| -4% | -$21M | 0.48% | 40 |
|
|
2014
Q4 | $416M | Sell |
1,224,670
-689,255
| -36% | -$223M | 0.4% | 53 |
|
|
2014
Q3 | $633M | Buy |
1,913,925
+43,307
| +2% | +$14.3M | 0.63% | 28 |
|
|
2014
Q2 | $590M | Buy |
1,870,618
+106,552
| +6% | +$32.1M | 0.6% | 29 |
|
|
2014
Q1 | $540M | Buy |
1,764,066
+141,599
| +9% | +$44.9M | 0.58% | 29 |
|
|
2013
Q4 | $454M | Sell |
1,622,467
-484,079
| -23% | -$125M | 0.52% | 35 |
|
|
2013
Q3 | $507M | Sell |
2,106,546
-120,323
| -5% | -$26.9M | 0.63% | 26 |
|
|
2013
Q2 | $479M | Buy |
+2,226,869
| New | +$476M | 0.62% | 28 |
|
Other funds holding BIIB
UBS AM's BIIB Position: Q2 2026 in Review
UBS AM reduced its Biogen (BIIB) stake by 8.9% in Q2 2026, selling an estimated $23.4M and leaving 1,255,168 shares worth $271M. The position accounts for 0.05% of the portfolio, ranked #314.
UBS AM first reported a position in BIIB in Q2 2013 and has held it in 53 quarters since. The position peaked at $633M in Q3 2014. 1,043 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.
- UBS AM held 1,255,168 shares of Biogen worth $271M as of Q2 2026.
- UBS AM sold 122,400 Biogen shares in Q2 2026, an estimated $23.4M.
- Biogen made up 0.05% of UBS AM's portfolio in Q2 2026, its #314 holding.
- UBS AM first reported a position in Biogen in Q2 2013 and has held it in 53 quarters since.
- UBS AM's Biogen position peaked at $633M in Q3 2014.
- 1,043 funds tracked by Wall St. Rank held Biogen as of Q2 2026.
Based on UBS AM's 13F filing for Q2 2026, filed 13 Aug 2026.