Reported 1,508,346 shares, up 344,816 (29.6%) from the prior quarter.
Reported value 30.5%; share count 29.6% 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 | 504893000 |
| 2021-12-31 | 271435000 |
| 2022-03-31 | 226599000 |
| 2022-06-30 | 210248000 |
| 2022-09-30 | 409717000 |
| 2022-12-31 | 386723000 |
| 2023-03-31 | 580627000 |
| 2023-06-30 | 321494000 |
| 2023-09-30 | 299039000 |
| 2023-12-31 | 390315000 |
| 2024-03-31 | 342772000 |
| 2024-06-30 | 466287000 |
| 2024-09-30 | 370729000 |
| 2024-12-31 | 295705000 |
| 2025-03-31 | 157531000 |
| 2025-06-30 | 104734000 |
| 2025-09-30 | 135242000 |
| 2025-12-31 | 139397000 |
| 2026-03-31 | 123277000 |
| 2026-06-30 | 167293000 |
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 | Added | 774,283 | +101,856 (15.1%) | 0.02% | $167,293,000 | 2026-08-14 | |
| Q1 2026 | Reduced | 672,427 | -119,644 (-15.1%) | 0.01% | $123,277,000 | 2026-05-15 | |
| Q4 2025 | Reduced | 792,071 | -173,386 (-18.0%) | 0.02% | $139,397,000 | 2026-02-17 | |
| Q3 2025 | Added | 965,457 | +131,530 (15.8%) | 0.01% | $135,242,000 | 2025-11-14 | |
| Q2 2025 | Reduced | 833,927 | -317,265 (-27.6%) | 0.01% | $104,734,000 | 2025-08-14 | |
| Q1 2025 | Reduced | 1,151,192 | -782,524 (-40.5%) | 0.02% | $157,531,000 | 2025-05-14 | |
| Q4 2024 | Added | 1,933,716 | +21,170 (1.1%) | 0.03% | $295,705,000 | 2025-02-14 | |
| Q3 2024 | Reduced | 1,912,546 | -98,865 (-4.9%) | 0.04% | $370,729,000 | 2024-11-14 | |
| Q2 2024 | Added | 2,011,411 | +421,782 (26.5%) | 0.06% | $466,287,000 | 2024-08-14 | |
| Q1 2024 | Added | 1,589,629 | +81,283 (5.4%) | 0.04% | $342,772,000 | 2024-05-15 | |
| Q4 2023 | Added | 1,508,346 | +344,816 (29.6%) | 0.05% | $390,315,000 | 2024-02-14 | |
| Q3 2023 | Added | 1,163,530 | +34,888 (3.1%) | 0.04% | $299,039,000 | 2023-11-14 | |
| Q2 2023 | Reduced | 1,128,642 | -959,714 (-46.0%) | 0.04% | $321,494,000 | 2023-08-14 | |
| Q1 2023 | Added | 2,088,356 | +691,843 (49.5%) | 0.09% | $580,627,000 | 2023-05-15 | |
| Q4 2022 | Reduced | 1,396,513 | -138,002 (-9.0%) | 0.06% | $386,723,000 | 2023-02-14 | |
| Q3 2022 | Added | 1,534,515 | +503,584 (48.8%) | 0.07% | $409,717,000 | 2022-11-14 | |
| Q2 2022 | Reduced | 1,030,931 | -45,038 (-4.2%) | 0.03% | $210,248,000 | 2022-08-15 | |
| Q1 2022 | Reduced | 1,075,969 | -55,388 (-4.9%) | 0.02% | $226,599,000 | 2022-05-16 | |
| Q4 2021 | Reduced | 1,131,357 | -652,779 (-36.6%) | 0.02% | $271,435,000 | 2022-02-14 | |
| Q3 2021 | Added | 1,784,136 | +171,573 (10.6%) | 0.05% | $504,893,000 | 2021-11-15 | |
|
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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 14, 2024
- Filing type
- 13F-HR
- Position type
- COMM STK
Voting authority reported
- Sole
- 1,448,610
- Shared
- 0
- None
- 59,736
“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.