Reported 1,463,571 shares, down 65,525 (4.3%) from the prior quarter.
Reported value -3.6%; share count -4.3% vs. the prior quarter.
Reported position value by quarter
Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.
| Date | Holding Value |
|---|---|
| 2021-09-30 | 459013000 |
| 2021-12-31 | 373125000 |
| 2022-03-31 | 288743762 |
| 2022-06-30 | 240601682 |
| 2022-09-30 | 332344779 |
| 2022-12-31 | 362128838 |
| 2023-03-31 | 382995778 |
| 2023-06-30 | 409963241 |
| 2023-09-30 | 392992963 |
| 2023-12-31 | 378728268 |
| 2024-03-31 | 328434894 |
| 2024-06-30 | 481894666 |
| 2024-09-30 | 438929745 |
| 2024-12-31 | 355569431 |
| 2025-03-31 | 294669340 |
| 2025-06-30 | 284357989 |
| 2025-09-30 | 0 |
| 2025-12-31 | 464408396 |
| 2026-03-31 | 0 |
| 2026-06-30 | 557441930 |
Quarterly position history
How this manager's reported quarter-end position changed over time.
| Quarter | Activity | Shares | Change | % of reported 13F | Reported value | Filed | Source filing |
|---|---|---|---|---|---|---|---|
| Q2 2026 | New | 2,580,033 | +2,580,033 (0.0%) | 0.06% | $557,441,930 | 2026-08-12 | |
| Q1 2026 | Reduced | 0 | -2,638,834 (-100.0%) | 0 | $0 | 2026-05-11 | |
| Q4 2025 | New | 2,638,834 | +2,638,834 (0.0%) | 0.05% | $464,408,396 | 2026-02-10 | |
| Q3 2025 | Reduced | 0 | -2,264,177 (-100.0%) | 0 | $0 | 2025-11-13 | |
| Q2 2025 | Added | 2,264,177 | +110,791 (5.1%) | 0.04% | $284,357,989 | 2025-08-13 | |
| Q1 2025 | Reduced | 2,153,386 | -171,813 (-7.4%) | 0.04% | $294,669,340 | 2025-05-13 | |
| Q4 2024 | Added | 2,325,199 | +60,807 (2.7%) | 0.05% | $355,569,431 | 2025-02-12 | |
| Q3 2024 | Added | 2,264,392 | +185,647 (8.9%) | 0.06% | $438,929,745 | 2024-11-13 | |
| Q2 2024 | Added | 2,078,745 | +555,604 (36.5%) | 0.07% | $481,894,666 | 2024-08-14 | |
| Q1 2024 | Added | 1,523,141 | +59,570 (4.1%) | 0.05% | $328,434,894 | 2024-05-14 | |
| Q4 2023 | Reduced | 1,463,571 | -65,525 (-4.3%) | 0.07% | $378,728,268 | 2024-02-09 | |
| Q3 2023 | Added | 1,529,096 | +89,871 (6.2%) | 0.08% | $392,992,963 | 2023-11-13 | |
| Q2 2023 | Added | 1,439,225 | +61,691 (4.5%) | 0.08% | $409,963,241 | 2023-08-14 | |
| Q1 2023 | Added | 1,377,534 | +69,832 (5.3%) | 0.08% | $382,995,778 | 2023-05-15 | |
| Q4 2022 | Added | 1,307,702 | +62,965 (5.1%) | 0.09% | $362,128,838 | 2023-02-14 | |
| Q3 2022 | Added | 1,244,737 | +64,970 (5.5%) | 0.09% | $332,344,779 | 2022-11-14 | |
| Q2 2022 | Reduced | 1,179,767 | -191,286 (-14.0%) | 0.06% | $240,601,682 | 2022-08-11 | |
| Q1 2022 | Reduced | 1,371,053 | -184,152 (-11.8%) | 0.06% | $288,743,762 | 2022-05-09 | |
| Q4 2021 | Reduced | 1,555,205 | -66,806 (-4.1%) | 0.08% | $373,125,000 | 2022-02-10 | |
| Q3 2021 | Reduced | 1,622,011 | -199,140 (-10.9%) | 0.1% | $459,013,000 | 2021-11-05 | |
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Who else reported the position
1084 managers reported BIOGEN INC for Q4 2023.
| Manager | Activity | Shares | Change | % of reported 13F | Reported value | Tenure |
|---|---|---|---|---|---|---|
| PRIMECAP MANAGEMENT CO CA | Added | 16,264,481 | +251,915 | 3.33% | $4,208,759,748 | 43 qtrs |
| VANGUARD GROUP INC | Added | 14,407,330 | +2,218,744 | 0.08% | $3,728,184,783 | 43 qtrs |
| BlackRock Inc | Added | 14,246,658 | +272,071 | 0.09% | $3,686,607,689 | 43 qtrs |
| STATE STREET CORPORATION | Added | 6,945,665 | +80,011 | 0.09% | $1,797,329,732 | 43 qtrs |
| T Rowe Price Investment Management Inc | Added | 5,357,326 | +602,335 | 0.9% | $1,386,316,000 | 3 qtrs |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 5,324,396 | -49,914 | 0.26% | $1,377,793,953 | 43 qtrs |
| JPMorgan Chase & Co | Added | 5,072,640 | +86,888 | 0.13% | $1,312,647,270 | 43 qtrs |
| GEODE CAPITAL MANAGEMENT LLC | Added | 3,309,317 | +72,430 | 0.09% | $854,137,923 | 43 qtrs |
| Invesco Ltd | Added | 1,814,666 | +633,292 | 0.11% | $469,581,120 | 43 qtrs |
| Clearbridge Investments LLC | Reduced | 1,679,302 | -143,880 | 0.37% | $434,552,981 | 43 qtrs |
Filing details and methodology As reported
- Report period
- December 31, 2023
- Filed
- February 09, 2024
- Filing type
- 13F-HR
- Position type
- COM
Voting authority reported
- Sole
- 1,463,571
- Shared
- 0
- None
- 0
“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.
Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.