Norges Bank’s Biogen BIIB Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $557M | Buy |
+2,580,033
| New | +$494M | 0.06% | 288 |
|
|
2026
Q1 | – | Sell |
-2,638,834
| Closed | -$464M | – | 182 |
|
|
2025
Q4 | $464M | Buy |
+2,638,834
| New | +$431M | 0.05% | 327 |
|
|
2025
Q3 | – | Sell |
-2,264,177
| Closed | -$284M | – | 208 |
|
|
2025
Q2 | $284M | Buy |
2,264,177
+110,791
| +5% | +$13.8M | 0.04% | 387 |
|
|
2025
Q1 | $295M | Sell |
2,153,386
-171,813
| -7% | -$24.6M | 0.04% | 364 |
|
|
2024
Q4 | $356M | Buy |
2,325,199
+60,807
| +3% | +$10.3M | 0.05% | 341 |
|
|
2024
Q3 | $439M | Buy |
2,264,392
+185,647
| +9% | +$38.8M | 0.06% | 287 |
|
|
2024
Q2 | $482M | Buy |
2,078,745
+555,604
| +36% | +$121M | 0.07% | 236 |
|
|
2024
Q1 | $328M | Buy |
1,523,141
+59,570
| +4% | +$14M | 0.05% | 323 |
|
|
2023
Q4 | $379M | Sell |
1,463,571
-65,525
| -4% | -$16.1M | 0.07% | 266 |
|
|
2023
Q3 | $393M | Buy |
1,529,096
+89,871
| +6% | +$24M | 0.08% | 235 |
|
|
2023
Q2 | $410M | Buy |
1,439,225
+61,691
| +4% | +$18.4M | 0.08% | 231 |
|
|
2023
Q1 | $383M | Buy |
1,377,534
+69,832
| +5% | +$19.3M | 0.08% | 232 |
|
|
2022
Q4 | $362M | Buy |
1,307,702
+62,965
| +5% | +$17.8M | 0.09% | 232 |
|
|
2022
Q3 | $332M | Buy |
1,244,737
+64,970
| +6% | +$13.8M | 0.09% | 224 |
|
|
2022
Q2 | $241M | Sell |
1,179,767
-191,286
| -14% | -$39.1M | 0.06% | 287 |
|
|
2022
Q1 | $289M | Sell |
1,371,053
-184,152
| -12% | -$40M | 0.06% | 285 |
|
|
2021
Q4 | $373M | Sell |
1,555,205
-66,806
| -4% | -$17.2M | 0.08% | 245 |
|
|
2021
Q3 | $459M | Sell |
1,622,011
-199,140
| -11% | -$65.3M | 0.1% | 192 |
|
|
2021
Q2 | $631M | Buy |
1,821,151
+69,083
| +4% | +$20.9M | 0.14% | 142 |
|
|
2021
Q1 | $490M | Sell |
1,752,068
-151,585
| -8% | -$40.9M | 0.11% | 175 |
|
|
2020
Q4 | $466M | Sell |
1,903,653
-111,376
| -6% | -$28.7M | 0.11% | 175 |
|
|
2020
Q3 | $572M | Sell |
2,015,029
-124,631
| -6% | -$34.8M | 0.15% | 124 |
|
|
2020
Q2 | $572M | Sell |
2,139,660
-82,215
| -4% | -$24.7M | 0.16% | 116 |
|
|
2020
Q1 | $703M | Sell |
2,221,875
-191,750
| -8% | -$58.2M | 0.25% | 74 |
|
|
2019
Q4 | $716M | Buy |
2,413,625
+158,636
| +7% | +$44M | 0.2% | 95 |
|
|
2019
Q3 | $525M | Buy |
2,254,989
+188,745
| +9% | +$43.9M | 0.16% | 127 |
|
|
2019
Q2 | $483M | Buy |
2,066,244
+5,797
| +0.3% | +$1.34M | 0.15% | 134 |
|
|
2019
Q1 | $487M | Sell |
2,060,447
-82,781
| -4% | -$26.1M | 0.16% | 124 |
|
|
2018
Q4 | $645M | Sell |
2,143,228
-20,265
| -0.9% | -$6.47M | 0.24% | 82 |
|
|
2018
Q3 | $764M | Sell |
2,163,493
-7,954
| -0.4% | -$2.74M | 0.25% | 75 |
|
|
2018
Q2 | $630M | Buy |
2,171,447
+51,358
| +2% | +$14.4M | 0.22% | 88 |
|
|
2018
Q1 | $581M | Sell |
2,120,089
-45,645
| -2% | -$14.2M | 0.21% | 97 |
|
|
2017
Q4 | $690M | Buy |
2,165,734
+146,536
| +7% | +$47M | 0.25% | 81 |
|
|
2017
Q3 | $632M | Buy |
2,019,198
+4,721
| +0.2% | +$1.4M | 0.24% | 85 |
|
|
2017
Q2 | $547M | Sell |
2,014,477
-89,357
| -4% | -$23.6M | 0.22% | 92 |
|
|
2017
Q1 | $575M | Sell |
2,103,834
-25,824
| -1% | -$7.3M | 0.24% | 80 |
|
|
2016
Q4 | $604M | Buy |
2,129,658
+83,456
| +4% | +$24.7M | 0.26% | 71 |
|
|
2016
Q3 | $612M | Buy |
2,046,202
+148,133
| +8% | +$43.9M | 0.29% | 66 |
|
|
2016
Q2 | $459M | Buy |
1,898,069
+81,470
| +4% | +$21.5M | 0.22% | 92 |
|
|
2016
Q1 | $473M | Sell |
1,816,599
-130,276
| -7% | -$34.4M | 0.23% | 86 |
|
|
2015
Q4 | $596M | Sell |
1,946,875
-29,055
| -1% | -$8.35M | 0.3% | 66 |
|
|
2015
Q3 | $577M | Buy |
1,975,930
+299,607
| +18% | +$98.9M | 0.3% | 62 |
|
|
2015
Q2 | $677M | Buy |
1,676,323
+25,736
| +2% | +$10.3M | 0.34% | 52 |
|
|
2015
Q1 | $697M | Buy |
1,650,587
+4,782
| +0.3% | +$1.88M | 0.34% | 54 |
|
|
2014
Q4 | $559M | Hold |
1,645,805
| – | – | 0.28% | 68 |
|
|
2014
Q3 | $544M | Sell |
1,645,805
-1,663,731
| -50% | -$549M | 0.3% | 62 |
|
|
2014
Q2 | $1.04B | Buy |
3,309,536
+1,637,868
| +98% | +$493M | 0.28% | 70 |
|
|
2014
Q1 | $511M | Hold |
1,671,668
| – | – | 0.29% | 68 |
|
|
2013
Q4 | $468M | Sell |
1,671,668
-50,658
| -3% | -$13.1M | 0.27% | 71 |
|
|
2013
Q3 | $415M | Sell |
1,722,326
-128,079
| -7% | -$28.7M | 0.24% | 79 |
|
|
2013
Q2 | $398M | Buy |
+1,850,405
| New | +$395M | 0.25% | 80 |
|
Other funds holding BIIB
Norges Bank's BIIB Position: Q2 2026 in Review
Norges Bank opened a new position in Biogen (BIIB) in Q2 2026: 2,580,033 shares worth $557M. The stake represents 0.06% of the portfolio and ranks #288 among its holdings. This is a return to the name: Norges Bank previously reported a position in BIIB as recently as Q4 2025.
Norges Bank first reported a position in BIIB in Q2 2013 and has held it in 51 quarters since. The position peaked at $1.04B in Q2 2014. 1,036 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.
- Norges Bank held 2,580,033 shares of Biogen worth $557M as of Q2 2026.
- Biogen was a new Norges Bank position in Q2 2026.
- Biogen made up 0.06% of Norges Bank's portfolio in Q2 2026, its #288 holding.
- Norges Bank first reported a position in Biogen in Q2 2013 and has held it in 51 quarters since.
- Norges Bank's Biogen position peaked at $1.04B in Q2 2014.
- 1,036 funds tracked by Wall St. Rank held Biogen as of Q2 2026.
Based on Norges Bank's 13F filing for Q2 2026, filed 12 Aug 2026.