Biogen Inc.
BIIB- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0000875045
In the last 90 days, Biogen Inc. insiders filed 0 open-market purchases and 1 sale; 1,047 institutions reported holding it in 13F filings for Q2 2026, worth $30.7B in total; no superinvestor holds it.
13F holders, Q3 2025
Institutional positions in Biogen Inc. as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 909
- +52 vs. Q2 2025
- Shares held
- 131.3M
- +3.52M (+2.8%) vs. Q2 2025
- Total value
- $18.4B
- +$2.32B (+14.5%) vs. Q2 2025
- New holders
- 125
- 323 more added
- Sold out
- 73
- 268 more reduced
10 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting BIIB on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1,047 | $30.7B |
| Q1 2026 | 1,015 | $24.7B |
| Q4 2025 | 1,002 | $24.6B |
| Q3 2025 | 909 | $18.4B |
| Q2 2025 | 867 | $16.3B |
| Q1 2025 | 882 | $17.7B |
| Q4 2024 | 879 | $20.2B |
| Q3 2024 | 921 | $25.1B |
| Q2 2024 | 947 | $29.9B |
| Q1 2024 | 955 | $28.0B |
| Q4 2023 | 1,005 | $33.3B |
| Q3 2023 | 966 | $32.2B |
| Q2 2023 | 1,009 | $36.1B |
| Q1 2023 | 1,004 | $35.0B |
| Q4 2022 | 1,033 | $34.6B |
| Q3 2022 | 987 | $33.0B |
| Q2 2022 | 930 | $25.0B |
| Q1 2022 | 954 | $25.9B |
| Q4 2021 | 1,014 | $29.7B |
| Q3 2021 | 1,044 | $35.1B |
| Q2 2021 | 1,107 | $43.6B |
| Q1 2021 | 1,096 | $35.7B |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Richardson Financial Services Inc. | 437 | $61.2K | 0.04% | 00.0% | Unchanged |
| Bayforest Capital Ltd | 429 | $60.1K | 0.03% | +429 | New |
| TD Private Client Wealth LLC | 414 | $58.0K | 0.00% | +76+22.5% | Added |
| Caldwell Trust Co | 401 | $56.2K | 0.01% | 00.0% | Unchanged |
| Greykasell Wealth Strategies, Inc. | 385 | $53.9K | 0.02% | −120−23.8% | Reduced |
| Onefund, LLC | 384 | $53.8K | 0.03% | +11+2.9% | Added |
| Caitong International Asset Management Co., Ltd | 382 | $53.5K | 0.04% | +382 | New |
| Quest Partners LLC | 375 | $52.5K | 0.00% | −10,789−96.6% | Reduced |
| Aventura Private Wealth, LLC | 367 | $51.4K | 0.02% | −35−8.7% | Reduced |
| Armstrong Advisory Group, Inc | 356 | $49.9K | 0.00% | 00.0% | Unchanged |
| Ameritas Advisory Services, LLC | 353 | $49.4K | 0.00% | −256−42.0% | Reduced |
| ORG Wealth Partners, LLC | 349 | $48.9K | 0.01% | +349 | New |
| FSA Wealth Management LLC | 344 | $48.2K | 0.02% | 00.0% | Unchanged |
| Optimum Investment Advisors | 335 | $46.9K | 0.02% | 00.0% | Unchanged |
| Sentry Investment Management LLC | 305 | $46.0K | 0.03% | +305 | New |
| MCF Advisors LLC | 324 | $45.4K | 0.00% | 00.0% | Unchanged |
| Bogart Wealth, LLC | 313 | $43.8K | 0.00% | +104+49.8% | Added |
| Costello Asset Management, INC | 300 | $42.0K | 0.01% | 00.0% | Unchanged |
| Newbridge Financial Services Group, Inc. | 300 | $42.0K | 0.01% | 00.0% | Unchanged |
| Hopwood Financial Services, Inc. | 300 | $42.0K | 0.03% | 00.0% | Unchanged |
| Itau Unibanco Holding S.A. | 271 | $38.0K | 0.00% | −2−0.7% | Reduced |
| Golden State Wealth Management, LLC | 265 | $37.1K | 0.00% | 00.0% | Unchanged |
| Quintet Private Bank (Europe) S.A. | 255 | $35.7K | 0.00% | 00.0% | Unchanged |
| WFA of San Diego, LLC | 253 | $35.4K | 0.02% | 00.0% | Unchanged |
| Twin Lakes Capital Management, LLC | 250 | $35.0K | 0.02% | 00.0% | Unchanged |
| GW&K Investment Management, LLC | 239 | $33.0K | 0.00% | −21−8.1% | Reduced |
| NBT Bank N A | 234 | $32.8K | 0.00% | −50−17.6% | Reduced |
| True Wealth Design, LLC | 233 | $32.6K | 0.01% | +90+62.9% | Added |
| Capital Advisors, Ltd. LLC | 232 | $32.0K | 0.00% | +52+28.9% | Added |
| Harbour Investments, Inc. | 207 | $29.0K | 0.00% | +6+3.0% | Added |
| WealthCollab, LLC | 206 | $28.9K | 0.01% | +35+20.5% | Added |
| Vision Financial Markets LLC | 200 | $28.0K | 0.02% | 00.0% | Unchanged |
| CoreCap Advisors, LLC | 199 | $27.9K | 0.00% | −150−43.0% | Reduced |
| MV Capital Management, Inc. | 194 | $27.2K | 0.00% | +14+7.8% | Added |
| Principia Wealth Advisory, LLC | 185 | $25.9K | 0.02% | +2+1.1% | Added |
| Bell Investment Advisors, Inc | 172 | $24.1K | 0.00% | +70+68.6% | Added |
| Ogorek Anthony Joseph | 172 | $24.0K | 0.01% | 00.0% | Unchanged |
| Addison Advisors LLC | 167 | $23.4K | 0.01% | +41+32.5% | Added |
| Spire Wealth Management | 166 | $23.3K | 0.00% | +18+12.2% | Added |
| Rise Advisors, LLC | 166 | $23.3K | 0.01% | +18+12.2% | Added |
| Central Trust Co | 163 | $22.8K | 0.00% | 00.0% | Unchanged |
| Trust Co | 163 | $22.8K | 0.00% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 162 | $22.7K | 0.00% | +60+58.8% | Added |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 160 | $22.4K | 0.01% | −450−73.8% | Reduced |
| Private Trust Co NA | 155 | $21.7K | 0.00% | −11−6.6% | Reduced |
| AllSquare Wealth Management LLC | 153 | $21.4K | 0.01% | 00.0% | Unchanged |
| Johnson Financial Group, Inc. | 119 | $16.7K | 0.00% | +80+205.1% | Added |
| North Capital, Inc. | 117 | $16.4K | 0.01% | +1+0.9% | Added |
| Atlantic Union Bankshares Corp | 115 | $16.1K | 0.00% | 00.0% | Unchanged |
| Concord Wealth Partners | 114 | $16.0K | 0.00% | −114−50.0% | Reduced |
| Sittner & Nelson, LLC | 110 | $15.4K | 0.01% | 00.0% | Unchanged |
| Bruce G. Allen Investments, LLC | 110 | $15.4K | 0.01% | +5+4.8% | Added |
| Cary Street Partner Investment Advisory LLC | 109 | $15.3K | 0.01% | +109 | New |
| CKW Financial Group | 100 | $15.0K | 0.00% | 00.0% | Unchanged |
| Graney & King, LLC | 106 | $14.8K | 0.01% | 00.0% | Unchanged |
| Strategic Wealth Partners, Ltd. | 105 | $14.7K | 0.00% | −175−62.5% | Reduced |
| NBC Securities, Inc. | 103 | $14.4K | 0.00% | −51−33.1% | Reduced |
| Delta Asset Management LLC | 100 | $14.0K | 0.00% | 00.0% | Unchanged |
| Strengthening Families & Communities, LLC | 100 | $14.0K | 0.00% | 00.0% | Unchanged |
| Broadwater Capital Management LLC | 100 | $14.0K | 0.01% | −12,459−99.2% | Reduced |
| Global Trust Asset Management, LLC | 100 | $14.0K | 0.01% | +100 | New |
| E Fund Management (Hong Kong) Co., Ltd. | 99 | $13.9K | 0.01% | +59+147.5% | Added |
| High Note Wealth, LLC | 99 | $13.9K | 0.00% | +64+182.9% | Added |
| VSM Wealth Advisory, LLC | 92 | $12.9K | 0.00% | 00.0% | Unchanged |
| Ransom Advisory, Ltd | 90 | $12.6K | 0.01% | 00.0% | Unchanged |
| Red Tortoise LLC | 89 | $12.5K | 0.01% | 00.0% | Unchanged |
| Clayton Financial Group LLC | 87 | $12.2K | 0.01% | +87 | New |
| Centerpoint Advisors, LLC | 83 | $12.0K | 0.00% | 00.0% | Unchanged |
| Brown Shipley& Co Ltd | 85 | $11.9K | 0.01% | 00.0% | Unchanged |
| RMG Wealth Management LLC | 80 | $11.9K | 0.00% | 00.0% | Unchanged |
| Asset Planning,Inc | 84 | $11.8K | 0.01% | −42−33.3% | Reduced |
| Hara Capital LLC | 84 | $11.8K | 0.01% | 00.0% | Unchanged |
| Quent Capital, LLC | 82 | $11.5K | 0.00% | +82 | New |
| Union Bancaire Privee, UBP SA | 82 | $11.3K | 0.00% | 00.0% | Unchanged |
| Adirondack Trust Co | 80 | $11.2K | 0.00% | 00.0% | Unchanged |
| Stephenson National Bank & Trust | 79 | $11.1K | 0.00% | +4+5.3% | Added |
| Steigerwald, Gordon & Koch Inc. | 79 | $11.1K | 0.00% | +79 | New |
| Independence Bank of Kentucky | 75 | $10.5K | 0.00% | 00.0% | Unchanged |
| Cetera Trust Company, N.A | 75 | $10.5K | 0.01% | 00.0% | Unchanged |
| Mountain Hill Investment Partners Corp. | 75 | $10.5K | 0.01% | 00.0% | Unchanged |
| Medallion Wealth Advisors, LLC | 73 | $10.2K | 0.00% | −42−36.5% | Reduced |
| Avion Wealth | 73 | $10.0K | 0.00% | −1−1.4% | Reduced |
| Sachetta, LLC | 70 | $9.81K | 0.00% | 00.0% | Unchanged |
| Smallwood Wealth Investment Management, LLC | 70 | $9.80K | 0.01% | 00.0% | Unchanged |
| Catalyst Capital Advisors LLC | 69 | $9.67K | 0.00% | −20−22.5% | Reduced |
| Salomon & Ludwin, LLC | 57 | $9.11K | 0.00% | +57 | New |
| First Community Trust NA | 65 | $9.11K | 0.01% | 00.0% | Unchanged |
| Future Financial Wealth Managment LLC | 65 | $9.11K | 0.01% | 00.0% | Unchanged |
| Prestige Wealth Management Group LLC | 64 | $8.97K | 0.00% | +26+68.4% | Added |
| Private Wealth Asset Management, LLC | 63 | $8.82K | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 62 | $8.69K | 0.00% | −12−16.2% | Reduced |
| Root Financial Partners, LLC | 62 | $8.69K | 0.00% | +62 | New |
| Montag A & Associates Inc | 60 | $8.40K | 0.00% | 00.0% | Unchanged |
| Hemington Wealth Management | 59 | $8.00K | 0.00% | +14+31.1% | Added |
| Saranac Partners Ltd | 57 | $7.99K | 0.00% | +57 | New |
| Asset Dedication, LLC | 57 | $7.99K | 0.00% | −17−23.0% | Reduced |
| Tortoise Investment Management, LLC | 56 | $7.84K | 0.00% | +7+14.3% | Added |
| Private Wealth Management Group, LLC | 54 | $7.57K | 0.00% | +7+14.9% | Added |
| UMA Financial Services, Inc. | 53 | $7.42K | 0.00% | +11+26.2% | Added |
| Grove Bank & Trust | 51 | $7.14K | 0.00% | 00.0% | Unchanged |