57/100B251.575
USD
1.06
(0.42%)
Market Open
Last updated: · Delayed 15 min
Fair value393.61Plus-36%295Price 251.58492
Q4 FY2026 · Earnings report
EPS estimate 2.81Revenue estimate 2.61B
Q4 FY2026 · Earnings report
EPS estimate 2.81Revenue estimate 2.61B
Who owns Biogen?What is institutional ownership? Institutional ownership is the share of a company's stock held by funds, banks and other investment managers, as they report it each quarter on Form 13F.
Institutions own 97.2% of Biogen's shares, through 1,103 funds, banks and other managers that report their holdings to the SEC; individual investors and others hold the rest. The largest on 30 June 2026 were FMR LLC (12.3%), BlackRock, Inc. (10.8%), Primecap Management Co (10.3%).
- Institutions ownWhat is institutional ownership? Institutional ownership is the share of a company's stock held by funds, banks and other investment managers, as they report it each quarter on Form 13F.
- 97.2%
- Institutional holders
- 1,103
- The 10 largest hold
- 57.9%
- Free floatWhat is free float? Free float is the part of a company's shares that anyone can buy and sell: all its shares minus those held by insiders, founders and owners of over 5%.
- 99.2%
- Holdings as of
- 30 Jun 2026
Who owns the shares
10 largest holders 57.9% Other institutions 39.3% Individuals and others 2.8%
Shares free to trade
Free float 146.70M shares ·99.2% Closely held 1.12M shares ·0.8%
Closely held shares belong to insiders, founders and owners of more than 5%, and seldom change hands. The free float is the rest: the shares anyone can buy and sell.
The largest shareholders
| # | Holder | Shares | Of the company | Value | Change last quarter (shares) |
|---|---|---|---|---|---|
| 1 | FMR LLC | 18,217,239 | 12.33% | 3.94B USD | +5,409,698 |
| 2 | BlackRock, Inc. | 15,985,736 | 10.82% | 3.45B USD | +11,135 |
| 3 | Primecap Management Co | 15,154,606 | 10.26% | 3.27B USD | +396,999 |
| 4 | Vanguard Capital Management LLC | 9,651,117 | 6.53% | 2.09B USD | +113,700 |
| 5 | State Street Corp | 7,344,327 | 4.99% | 1.59B USD | +176,405 |
| 6 | Vanguard Portfolio Management LLC | 6,604,936 | 4.47% | 1.43B USD | +73,209 |
| 7 | Geode Capital Management, LLC | 4,449,295 | 3.01% | 957.94M USD | +106,693 |
| 8 | Wellington Management Group LLP | 3,117,469 | 2.11% | 673.56M USD | +155,828 |
| 9 | Norges Bank | 2,580,033 | 1.75% | 557.44M USD | New position |
| 10 | Morgan Stanley | 2,411,271 | 1.63% | 520.98M USD | +240,331 |
| 11 | Aqr Capital Management LLC | 1,936,859 | 1.31% | 416.93M USD | +13,302 |
| 12 | JPMorgan Chase & Co | 1,823,140 | 1.23% | 394.95M USD | -192,869 |
| 13 | Invesco Ltd. | 1,803,944 | 1.22% | 389.76M USD | +58,689 |
| 14 | Amundi | 1,516,831 | 1.03% | 327.73M USD | +726,004 |
| 15 | Legal & General Group PLC | 1,493,289 | 1.01% | 322.64M USD | +143,457 |
| 16 | Northern Trust Corp | 1,429,490 | 0.97% | 308.86M USD | -17,089 |
| 17 | Boston Partners | 1,263,429 | 0.86% | 272.85M USD | -436,649 |
| 18 | UBS AM | 1,255,168 | 0.85% | 271.19M USD | -122,400 |
| 19 | Goldman Sachs Group Inc | 1,230,390 | 0.83% | 265.84M USD | +179,296 |
| 20 | Dimensional Fund Advisors LP | 1,148,568 | 0.78% | 248.17M USD | +69,449 |
| 21 | Pacer Advisors, Inc. | 1,122,981 | 0.76% | 242.63M USD | +462,573 |
| 22 | Sixth Street Partners Management Company, L.P. | 1,117,663 | 0.76% | 241.48M USD | New position |
| 23 | Charles Schwab Investment Management Inc | 1,117,663 | 0.76% | 241.48M USD | -31,731 |
| 24 | Bank Of America Corp | 1,116,228 | 0.76% | 241.17M USD | -40,141 |
| 25 | UBS Group AG | 1,030,150 | 0.70% | 222.57M USD | +506,700 |
All institutions last quarter
- Bought or added
- 681 · 129 new
- Sold or cut
- 398 · 93 sold out
- Net shares bought
- +8.45M · 1.83B USD
- Institutional ownership
- 91.8% → 97.2%
Biggest buyers last quarter
- FMR LLC+5,409,698
- Norges BankNew position
- Sixth Street Partners Management Company, L.P.New position
- Amundi+726,004
- UBS Group AG+506,700
Biggest sellers last quarter
- Boston Partners-436,649
- Balyasny Asset Management L.P.-384,956
- Barclays PLC-304,317
- JPMorgan Chase & Co-192,869
- Deutsche Bank Ag\-169,793
From the holders' 13F filings with the SEC for the quarter to 30 Jun 2026, filed up to 45 days after it; the buyers and sellers are among the 100 largest holders.
Common questions about Biogen's shareholders
Source: Financial Modeling Prep