CUSIP 09062X103COMBIIBQ4 2025
28 filings · latest Feb 5, 2026
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Vanguard Group Inc | 17.45M | $3.07B |
| 2 | Blackrock, Inc. | 14.81M | $2.61B |
| 3 | Primecap Management Co/Ca/ | 14.76M | $2.60B |
| 4 | Fmr LLC | 9.43M | $1.66B |
| 5 | State Street Corp | 7.16M | $1.26B |
| 6 | Geode Capital Management, LLC | 4.20M | $736.43M |
| 7 | Wellington Management Group LLP | 3.55M | $624.99M |
| 8 | Point72 Asset Management, L.P. | 2.81M | $495.09M |
| 9 |
| 4 | Apr 17, 2025 | Blackrock, Inc. | 13G/A | 8.5% | 12.51M | SEC |
| 5 | Nov 12, 2024 | Vanguard Group Inc | 13G/A | 11.4% | 16.68M | SEC |
| 6 | Nov 4, 2024 | Vanguard Group Inc | 13G/A | 11.4% | 16.68M | SEC |
| 7 | Oct 16, 2024 | State Street Corp | 13G | 5.0% | 7.35M | SEC |
| 8 | Aug 7, 2024 | Blackrock Inc. | 13G/A | 10.1% | 14.65M | SEC |
| 9 | Feb 12, 2024 | Vanguard Group Inc | 13G/A | 10.0% | 14.52M | SEC |
| 10 | Feb 12, 2024 | Vanguard Group Inc | 13G/A | 9.9% | 14.41M | SEC |
See the full Schedule 13D/13G history for Biogen Inc.
Unlock full history| 2.64M |
| $464.41M |
| 10 | Morgan Stanley | 2.33M | $409.18M |