Biogen Inc. (NASDAQ:BIIB) is held by 967 institutional investors per 13F filings through December 2025.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | 31 Dec, 2025 | 17,447,092 | 157,857 | 0.91% | $3,070,513,721.00 |
| BlackRock, Inc. | 31 Dec, 2025 | 15,974,601 | 1,163,231 | 7.85% | $2,928,623,480.00 |
| BlackRock, Inc. | 31 Dec, 2025 | 14,811,370 | 47,418 | 0.32% | $2,606,652,919.00 |
| PRIMECAP MANAGEMENT CO/CA/ | 31 Dec, 2025 | 14,757,997 | -196,700 | -1.32% | $2,597,259,895.00 |
| PRIMECAP MANAGEMENT CO/CA/ | 31 Dec, 2025 | 14,757,607 | -390 | 0.00% | $2,705,512,094.00 |
| FMR LLC | 31 Dec, 2025 | 12,807,541 | 3,381,678 | 35.88% | $2,348,006,582.00 |
| VANGUARD CAPITAL MANAGEMENT LLC | 31 Dec, 2025 | 9,537,417 | 9,537,417 | 0.00% | $1,748,494,659.00 |
| FMR LLC | 31 Dec, 2025 | 9,425,863 | 8,138,103 | 631.96% | $1,658,857,459.00 |
| State Street Corp | 31 Dec, 2025 | 7,167,922 | 8,902 | 0.12% | $1,314,095,140.00 |
| State Street Corp | 31 Dec, 2025 | 7,159,020 | -160,729 | -2.20% | $1,259,915,930.00 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31 Dec, 2025 | 6,531,727 | 6,531,727 | 0.00% | $1,197,461,511.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Dec, 2025 | 4,342,602 | 143,203 | 3.41% | $793,387,370.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Dec, 2025 | 4,199,399 | 130,618 | 3.21% | $736,434,804.00 |
| WELLINGTON MANAGEMENT GROUP LLP | 31 Dec, 2025 | 3,551,269 | -695,235 | -16.37% | $624,987,832.00 |
| WELLINGTON MANAGEMENT GROUP LLP | 31 Dec, 2025 | 2,961,641 | -589,628 | -16.60% | $542,957,645.00 |
| Point72 Asset Management, L.P. | 31 Dec, 2025 | 2,813,192 | -1,059,709 | -27.36% | $495,093,660.00 |
| NORGES BANK | 31 Dec, 2025 | 2,638,834 | 2,638,834 | 0.00% | $464,408,396.00 |
| Morgan Stanley | 31 Dec, 2025 | 2,325,013 | 73,478 | 3.26% | $409,179,635.00 |
| Goldman Sachs Group Inc | 31 Dec, 2025 | 2,198,464 | 1,134,878 | 106.70% | $386,907,632.00 |
| Morgan Stanley | 31 Dec, 2025 | 2,170,940 | -154,073 | -6.63% | $397,998,875.00 |