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# Who owns BIOGEN INC. (BIIB)? Elite investor 13F holders

8 tracked elite investors reported holding BIOGEN INC as of 2026-06-30, including Patient Capital Management, Gotham Asset Management, Causeway Capital Management, Renaissance Technologies LLC, D.E. Shaw. Who bought, trimmed or exited each quarter, with links to the original SEC 13F filings.

8 tracked investors currently reported holding · Latest report period: 2026-06-30 · Health Care · Pharmaceuticals, Biotechnology & Life Sciences

Biogen Inc. discovers, develops, manufactures, and delivers therapies in the United States, Europe, Germany, Asia, and internationally. The company provides TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, and TYSABRI for multiple sclerosis (MS); SPINRAZA for spinal muscular atrophy; SKYCLARYS to treat Friedreich's Ataxia; QALSODY for treating amyotrophic lateral sclerosis; FUMADERM to treat plaque…

## Reported holders and securities, including exits (up to 20)

| Investor | Security | Instrument | Report period | Filed | Value | Quantity | Units | Change | Source |
|  --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [Patient Capital Management](https://ownershiptrace.com/13f/investors/68) | BIOGEN INC | SHARE | 2026-06-30 | 2026-08-13 00:00:00 | 61295674.00 USD | 283697.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1854794/0001854794-26-000005-index.html) |
| [Gotham Asset Management](https://ownershiptrace.com/13f/investors/94672) | BIOGEN INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 60475194.00 USD | 279900.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1510387/0001398344-26-014644-index.html) |
| [Causeway Capital Management](https://ownershiptrace.com/13f/investors/69) | BIOGEN INC | SHARE | 2026-06-30 | 2026-08-13 00:00:00 | 60125780.00 USD | 278283.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1165797/0000945621-26-001052-index.html) |
| [Renaissance Technologies LLC](https://ownershiptrace.com/13f/investors/63) | BIOGEN INC | SHARE | 2026-06-30 | 2026-08-13 00:00:00 | 16797369.00 USD | 77744.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1037389/0001037389-26-000059-index.html) |
| [D.E. Shaw](https://ownershiptrace.com/13f/investors/98) | BIOGEN INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 16083074.00 USD | 74438.000000 | Shares | buy | [Original filing](https://www.sec.gov/Archives/edgar/data/1009207/0001104659-26-097217-index.html) |
| [Hillman Capital Management](https://ownershiptrace.com/13f/investors/43) | BIOGEN INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 5183928.00 USD | 23993.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1314620/0001398344-26-014467-index.html) |
| [Sarissa Capital](https://ownershiptrace.com/13f/investors/106) | BIOGEN INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 205257.00 USD | 950.000000 | Shares | buy | [Original filing](https://www.sec.gov/Archives/edgar/data/1577524/0000899140-26-000879-index.html) |
| [Ancora Advisors / Ancora Holdings](https://ownershiptrace.com/13f/investors/101) | BIOGEN INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 8426.00 USD | 39.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1446114/0001446114-26-000012-index.html) |

Public disclosures can be delayed, incomplete, or amended. Report period describes a position date; transaction date describes a reported transaction; filed describes submission. A recent filing or page update does not establish a current holding. A dash means unavailable or not comparable, not zero.

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