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Biogen (BIIB) Ownership Overview
0.18% Insiders
36.47% Mutual Funds
20.88% Other Institutional Investors
28.77% ETFs
13.70% Public Companies and
Individual Investors
The ownership structure of Biogen (BIIB) stock is a mix of institutional, retail, and individual investors. Approximately 86.12% of the company’s stock is owned by Institutional Investors, 0.18% is owned by Insiders, and 13.70% is owned by Public Companies and Individual Investors.
Recent Insider Trading Activity
Date | Name | Activity | Value |
|---|---|---|---|
Aug 05, 2026 | xxxxxxxxxxxxx | $239750 | |
Feb 17, 2026 | xxxxxxxxxxxxx | $585 | |
Feb 10, 2026 | xxxxxxxxxxxxx | $531548 | |
Feb 03, 2026 | xxxxxxxxxxxxx | $134116 |
Recent Hedge Fund Trading Activity
Date | Firm | Activity | Value |
|---|---|---|---|
Jun 30, 2026 | xxxxxxxxxxxxx | $60125825 | |
Jun 30, 2026 | xxxxxxxxxxxxx | $1876265 | |
Jun 30, 2026 | xxxxxxxxxxxxx | $4537260 | |
Jun 30, 2026 | xxxxxxxxxxxxx | $3274304172 |
Top Shareholders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 15,683,177 | Institution | 10.61% | 3,378,626,821 | |
| 15,154,606 | Institution | 10.26% | 3,264,756,771 | |
| 14,038,837 | Institution | 9.50% | 3,024,386,655 | |
| 9,784,387 | Institution | 6.62% | 2,107,850,491 | |
| 8,359,880 | Institution | 5.66% | 1,800,968,948 | |
| 6,416,836 | Institution | 4.34% | 1,382,378,979 | |
| 4,077,712 | Institution | 2.76% | 878,461,496 | |
| 2,741,710 | Institution | 1.86% | 590,646,585 | |
| 2,526,097 | Institution | 1.71% | 544,197,077 | |
| 2,358,733 | Institution | 1.60% | 508,141,850 |
Top Mutual Fund Holders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 14,038,837 | Institution | 9.50% | 3,024,386,655 | |
| 8,359,880 | Institution | 5.66% | 1,800,968,948 | |
| 4,077,712 | Institution | 2.76% | 878,461,496 | |
| 2,741,710 | Institution | 1.86% | 590,646,585 | |
| 2,526,097 | Institution | 1.71% | 544,197,077 | |
| 2,332,567 | Institution | 1.58% | 502,504,909 | |
| 1,861,140 | Institution | 1.26% | 400,945,390 | |
| 1,579,047 | Institution | 1.07% | 340,174,095 | |
| 1,530,784 | Institution | 1.04% | 329,776,797 | |
| 1,316,936 | Institution | 0.89% | 283,707,522 |
Top ETF Holders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 4,702,672 | Institution | 3.18% | 954,407,282 | |
| 3,877,314 | Institution | 2.62% | 786,900,876 | |
| 3,195,163 | Institution | 2.16% | 648,458,331 | |
| 1,892,495 | Institution | 1.28% | 407,700,198 | |
| 1,806,790 | Institution | 1.22% | 380,744,857 | |
| 1,760,185 | Institution | 1.19% | 310,109,393 | |
| 1,406,751 | Institution | 0.95% | 285,500,115 | |
| 1,115,305 | Institution | 0.75% | 240,270,156 | |
| 1,062,893 | Institution | 0.72% | 223,983,442 | |
| 979,952 | Institution | 0.66% | 211,111,059 |
FAQ
Who Owns Biogen (BIIB)?
According to the latest TipRanks data, approximately 20.88% of the company's stock is held by institutional investors, 0.18% is held by insiders, and 13.70% is held by retail investors.
What percentage of Biogen (BIIB) stock is held by institutional investors?
According to the latest TipRanks data, approximately 20.88% of Biogen (BIIB) stock is held by institutional investors.
What percentage of Biogen (BIIB) stock is held by retail investors?
According to the latest TipRanks data, approximately 13.70% of Biogen (BIIB) stock is held by retail investors.
Who owns the most shares of Biogen (BIIB)?
Vanguard 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.