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Biogen (BIIB) Ownership - Who Owns Biogen?
Biogen (BIIB) Ownership Overview
- 0.18% Insiders
- 38.19% Mutual Funds
- 2.89% Other Institutional Investors
- 29.09% ETFs
- 29.65% Public Companies and Individual Investors
The ownership structure of Biogen (BIIB) stock is a mix of institutional, retail, and individual investors. Approximately 70.17% of the company’s stock is owned by Institutional Investors, 0.18% is owned by Insiders, and 29.65% is owned by Public Companies and Individual Investors.
The ownership structure of Biogen (BIIB) stock is a mix of institutional, retail, and individual investors. Approximately 70.17% of the company’s stock is owned by Institutional Investors, 0.18% is owned by Insiders, and 29.65% is owned by Public Companies and Individual Investors.
Recent Insider Trading Activity
| Date | Name | Activity | Value |
|---|---|---|---|
| Aug 04, 2026 | Lloyd Minor | $239,750 | |
| Feb 16, 2026 | Nicole Murphy | $585 | |
| Feb 09, 2026 | Priya Singhal | $531,548 | |
| Feb 02, 2026 | Priya Singhal | $134,116 |
Recent Hedge Fund Trading Activity
| Date | Firm | Activity | Value |
|---|---|---|---|
| Jun 30, 2026 | Causeway Capital Management Llc | $60,125,825 | |
| Jun 30, 2026 | Auxier Asset Management | $1,876,265 | |
| Jun 30, 2026 | Hussman Strategic Advisors Inc | $4,537,260 | |
| Jun 30, 2026 | Primecap Management Co | $3,274,304,172 |
Top Shareholders
| Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| BlackRock, Inc. | 15,985,736 | Institution | 10.81% | 3,980,608,121 |
| Vanguard | 15,781,476 | Institution | 10.68% | 3,929,745,339 |
| Theofanis Kolokotrones | 15,154,606 | Institution | 10.25% | 3,773,648,440 |
| Vanguard Index Funds | 14,239,538 | Institution | 9.63% | 3,545,787,357 |
| Ishares | 10,067,197 | Institution | 6.81% | 2,506,832,725 |
| Vanguard Chester Funds | 8,359,880 | Institution | 5.66% | 2,081,693,719 |
| Spdr | 6,720,711 | Institution | 4.55% | 1,673,524,246 |
| Fidelity Contrafund | 6,193,978 | Institution | 4.19% | 1,542,362,462 |
| Fidelity Concord Street Trust | 2,819,503 | Institution | 1.91% | 702,084,442 |
| Vanguard Specialized Funds | 2,745,486 | Institution | 1.86% | 683,653,469 |
Top Mutual Fund Holders
| Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| Vanguard Index Funds | 14,239,538 | Institution | 9.63% | 3,545,787,357 |
| Vanguard Chester Funds | 8,359,880 | Institution | 5.66% | 2,081,693,719 |
| Fidelity Contrafund | 6,193,978 | Institution | 4.19% | 1,542,362,462 |
| Fidelity Concord Street Trust | 2,819,503 | Institution | 1.91% | 702,084,442 |
| Vanguard Specialized Funds | 2,745,486 | Institution | 1.86% | 683,653,469 |
| Vanguard Horizon Funds | 2,624,317 | Institution | 1.78% | 653,481,176 |
| Fidelity Rutland Square Trust Ii | 1,918,152 | Institution | 1.30% | 477,639,030 |
| Primecap Odyssey Funds | 1,850,540 | Institution | 1.25% | 460,802,965 |
| Fidelity Puritan Trust | 1,388,754 | Institution | 0.94% | 345,813,634 |
| Vanguard Fenway Funds | 1,316,936 | Institution | 0.89% | 327,930,233 |
Top ETF Holders
| Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| Vanguard, VTI ETF | 4,683,142 | Institution | 3.17% | 1,057,828,115 |
| Vanguard, VOO ETF | 3,881,643 | Institution | 2.63% | 876,785,521 |
| Vanguard, VO ETF | 3,163,906 | Institution | 2.14% | 714,663,087 |
| iShares, IVV ETF | 1,970,244 | Institution | 1.33% | 490,610,458 |
| SPDR, SPY ETF | 1,807,470 | Institution | 1.22% | 458,410,541 |
| SPDR, AU:SPY ETF | 1,760,185 | Institution | 1.19% | 310,109,393 |
| Vanguard, VTV ETF | 1,407,563 | Institution | 0.95% | 317,940,330 |
| iShares, IBB ETF | 1,141,515 | Institution | 0.77% | 284,248,650 |
| SPDR, XLV ETF | 1,080,931 | Institution | 0.73% | 274,145,720 |
| Invesco, RSP ETF | 936,544 | Institution | 0.63% | 233,208,821 |
FAQ
Who Owns Biogen (BIIB)?
According to the latest TipRanks data, approximately 70.17% of the company's stock is held by institutional investors, 0.18% is held by insiders, and 29.65% is held by public companies and individual investors.
What percentage of Biogen (BIIB) stock is held by institutional investors?
According to the latest TipRanks data, approximately 70.17% of Biogen (BIIB) stock is held by institutional investors: 38.19% by mutual funds, 29.09% by ETFs and 2.89% by other institutional investors.
What percentage of Biogen (BIIB) stock is held by retail investors?
According to the latest TipRanks data, approximately 29.65% of Biogen (BIIB) stock is held by public companies and individual investors.
Who owns the most shares of Biogen (BIIB)?
BlackRock, Inc. owns the most shares of Biogen (BIIB).
What is the significance of the ownership structure for a publicly traded company?
The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.
