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, Q1 2026
Institutional positions in Biogen Inc. as of Mar 31, 2026. 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
- 1,015
- +33 vs. Q4 2025
- Shares held
- 135.0M
- +15.4M (+12.9%) vs. Q4 2025
- Total value
- $24.7B
- +$3.70B (+17.6%) vs. Q4 2025
- New holders
- 138
- 402 more added
- Sold out
- 105
- 290 more reduced
20 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Signature Equity Partners, LLC | 36 | $6.60K | 0.00% | +32+800.0% | Added |
| Joseph Group Capital Management | 36 | $6.60K | 0.00% | +36 | New |
| Optiver Holding B.V. | 39 | $7.15K | 0.00% | +39 | New |
| Anchor Investment Management, LLC | 40 | $7.33K | 0.00% | 00.0% | Unchanged |
| Bank Julius Baer & Co. Ltd, Zurich | 40 | $7.35K | 0.00% | 00.0% | Unchanged |
| DT Investment Partners, LLC | 42 | $7.70K | 0.00% | 00.0% | Unchanged |
| McIlrath & Eck, LLC | 43 | $7.82K | 0.00% | 00.0% | Unchanged |
| Bartlett & Co. Wealth Management LLC | 47 | $8.80K | 0.00% | +4+9.3% | Added |
| Cornerstone Financial Management LLC | 48 | $8.80K | 0.01% | +9+23.1% | Added |
| NBC Securities, Inc. | 49 | $8.98K | 0.00% | −36−42.4% | Reduced |
| Transamerica Financial Advisors, Inc. | 50 | $9.17K | 0.00% | +33+194.1% | Added |
| Tradewinds Capital Management, LLC | 50 | $9.17K | 0.00% | 00.0% | Unchanged |
| Atlantic Trust, LLC | 50 | $9.17K | 0.00% | 00.0% | Unchanged |
| Financial Freedom, LLC | 50 | $9.17K | 0.00% | 00.0% | Unchanged |
| Millstone Evans Group, LLC | 50 | $9.17K | 0.01% | 00.0% | Unchanged |
| Synergy Investment Management, LLC | 51 | $9.35K | 0.00% | +51 | New |
| Timothy G. Youngquist 2020 Irrevocable Trust | 52 | $9.53K | 0.00% | +52 | New |
| Private Wealth Management Group, LLC | 52 | $9.53K | 0.00% | 00.0% | Unchanged |
| Kilter Group LLC | 52 | $9.53K | 0.00% | +3+6.1% | Added |
| Raffa Wealth Management, LLC | 53 | $9.72K | 0.00% | +2+3.9% | Added |
| Rossby Financial, LCC | 53 | $9.74K | 0.00% | +39+278.6% | Added |
| Salomon & Ludwin, LLC | 57 | $10.1K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 58 | $10.6K | 0.00% | +1+1.8% | Added |
| Kemnay Advisory Services Inc. | 59 | $10.8K | 0.00% | +59 | New |
| Westfuller Advisors, LLC | 60 | $11.0K | 0.00% | +1+1.7% | Added |
| Private Wealth Asset Management, LLC | 61 | $11.2K | 0.00% | −2−3.2% | Reduced |
| SJS Investment Consulting Inc. | 62 | $11.4K | 0.00% | +50+416.7% | Added |
| First Community Trust NA | 65 | $11.9K | 0.01% | 00.0% | Unchanged |
| First Command Advisory Services, Inc. | 67 | $12.3K | 0.00% | +67 | New |
| JFS Wealth Advisors, LLC | 68 | $12.5K | 0.00% | +5+7.9% | Added |
| Fortitude Family Office, LLC | 69 | $12.7K | 0.00% | +37+115.6% | Added |
| Creative Financial Designs Inc | 69 | $12.7K | 0.00% | +68+6,800.0% | Added |
| Smallwood Wealth Investment Management, LLC | 70 | $12.8K | 0.01% | 00.0% | Unchanged |
| Wealth Preservation Advisors, LLC | 70 | $12.8K | 0.01% | +61+677.8% | Added |
| Golden State Equity Partners | 70 | $12.8K | 0.00% | +70 | New |
| Sachetta, LLC | 70 | $12.8K | 0.01% | 00.0% | Unchanged |
| Avion Wealth | 75 | $13.0K | 0.00% | +3+4.2% | Added |
| Medallion Wealth Advisors, LLC | 73 | $13.4K | 0.00% | 00.0% | Unchanged |
| Red Tortoise LLC | 74 | $13.6K | 0.01% | −6−7.5% | Reduced |
| United Financial Planning Group LLC | 74 | $13.6K | 0.01% | +74 | New |
| Cetera Trust Company, N.A | 75 | $13.8K | 0.01% | 00.0% | Unchanged |
| Adkins Seale Capital Management LLC | 75 | $13.8K | 0.01% | 00.0% | Unchanged |
| Adirondack Trust Co | 80 | $14.7K | 0.00% | 00.0% | Unchanged |
| Steigerwald, Gordon & Koch Inc. | 81 | $14.8K | 0.00% | +2+2.5% | Added |
| Stance Capital LLC | 81 | $14.8K | 0.01% | +81 | New |
| Centerpoint Advisors, LLC | 83 | $15.0K | 0.00% | 00.0% | Unchanged |
| J.Safra Asset Management Corp | 82 | $15.0K | 0.00% | +55+203.7% | Added |
| Hara Capital LLC | 84 | $15.4K | 0.01% | 00.0% | Unchanged |
| Asset Planning,Inc | 84 | $15.4K | 0.01% | 00.0% | Unchanged |
| Quent Capital, LLC | 85 | $15.6K | 0.00% | −4−4.5% | Reduced |
| Brown Shipley& Co Ltd | 85 | $15.6K | 0.01% | 00.0% | Unchanged |
| Grove Bank & Trust | 88 | $16.1K | 0.00% | +3+3.5% | Added |
| Swiss Re Ltd | 90 | $16.5K | 0.10% | 00.0% | Unchanged |
| VSM Wealth Advisory, LLC | 92 | $16.9K | 0.01% | 00.0% | Unchanged |
| E Fund Management (Hong Kong) Co., Ltd. | 95 | $17.4K | 0.01% | +78+458.8% | Added |
| Broadwater Capital Management LLC | 100 | $17.6K | 0.01% | 00.0% | Unchanged |
| Spire Wealth Management | 96 | $17.6K | 0.00% | −63−39.6% | Reduced |
| Clayton Financial Group LLC | 97 | $17.8K | 0.01% | 00.0% | Unchanged |
| Cornerstone Planning Group LLC | 95 | $18.0K | 0.00% | +54+131.7% | Added |
| CKW Financial Group | 100 | $18.0K | 0.00% | 00.0% | Unchanged |
| Delta Asset Management LLC | 100 | $18.3K | 0.00% | 00.0% | Unchanged |
| Independence Bank of Kentucky | 100 | $18.3K | 0.00% | 00.0% | Unchanged |
| Cullen/Frost Bankers, Inc. | 100 | $18.3K | 0.00% | +57+132.6% | Added |
| Basecamp Wealth Advisors LLC | 103 | $18.9K | 0.00% | 00.0% | Unchanged |
| UMA Financial Services, Inc. | 103 | $18.9K | 0.00% | +50+94.3% | Added |
| Merrithew & Thorsten Inc | 106 | $19.0K | 0.02% | 00.0% | Unchanged |
| Strategic Wealth Partners, Ltd. | 105 | $19.3K | 0.00% | 00.0% | Unchanged |
| High Note Wealth, LLC | 105 | $19.3K | 0.00% | +9+9.4% | Added |
| RWM Asset Management, LLC | 105 | $19.3K | 0.00% | +105 | New |
| Graney & King, LLC | 106 | $19.4K | 0.01% | 00.0% | Unchanged |
| Global X Japan Co., Ltd. | 106 | $19.4K | 0.00% | +51+92.7% | Added |
| Raiffeisen Bank International AG | 105 | $19.7K | 0.00% | +105 | New |
| Bruce G. Allen Investments, LLC | 110 | $20.2K | 0.01% | 00.0% | Unchanged |
| Sittner & Nelson, LLC | 110 | $20.2K | 0.01% | 00.0% | Unchanged |
| Atlantic Union Bankshares Corp | 117 | $21.4K | 0.00% | +2+1.7% | Added |
| SMA Capital LLC | 120 | $22.0K | 0.01% | +120 | New |
| Ares Financial Consulting, LLC | 123 | $22.6K | 0.02% | +98+392.0% | Added |
| Bell Investment Advisors, Inc | 124 | $22.7K | 0.00% | 00.0% | Unchanged |
| Twin Peaks Wealth Advisors, LLC | 127 | $23.3K | 0.01% | +127 | New |
| NBT Bank N A | 138 | $25.3K | 0.00% | +12+9.5% | Added |
| Stephenson National Bank & Trust | 145 | $26.6K | 0.01% | +8+5.8% | Added |
| Ogorek Anthony Joseph | 152 | $27.0K | 0.01% | 00.0% | Unchanged |
| Johnson Financial Group, Inc. | 150 | $27.5K | 0.00% | +35+30.4% | Added |
| Addison Advisors LLC | 154 | $28.2K | 0.01% | +3+2.0% | Added |
| Highline Wealth Partners LLC | 157 | $28.8K | 0.01% | +157 | New |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 160 | $29.3K | 0.01% | 00.0% | Unchanged |
| Central Trust Co | 163 | $29.9K | 0.00% | 00.0% | Unchanged |
| First Horizon Corp | 181 | $33.2K | 0.00% | +12+7.1% | Added |
| MV Capital Management, Inc. | 185 | $33.9K | 0.00% | −9−4.6% | Reduced |
| Owl Creek Wealth Partners LLC | 185 | $33.9K | 0.01% | +185 | New |
| Principia Wealth Advisory, LLC | 186 | $34.1K | 0.02% | +1+0.5% | Added |
| WPG Advisers, LLC | 189 | $34.6K | 0.03% | +44+30.3% | Added |
| Quintet Private Bank (Europe) S.A. | 195 | $35.7K | 0.00% | 00.0% | Unchanged |
| GoalVest Advisory LLC | 198 | $36.3K | 0.01% | 00.0% | Unchanged |
| Intentional Wealth Strategies, LLC | 198 | $36.3K | 0.03% | +198 | New |
| Vision Financial Markets LLC | 200 | $36.7K | 0.04% | 00.0% | Unchanged |
| Private Trust Co NA | 200 | $36.7K | 0.00% | +25+14.3% | Added |
| Strive Financial Group ,LLC | 200 | $37.0K | 0.02% | 00.0% | Unchanged |
| Smithfield Trust Co | 206 | $37.0K | 0.00% | +200+3,333.3% | Added |
| ZRC Wealth Management, LLC | 204 | $37.4K | 0.01% | +4+2.0% | Added |