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
- 1,014
- +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
- 401 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 |
|---|---|---|---|---|---|
| Aventura Private Wealth, LLC | 260 | $47.7K | 0.02% | −13−4.8% | Reduced |
| Golden State Wealth Management, LLC | 260 | $47.7K | 0.01% | −5−1.9% | Reduced |
| Opal Wealth Advisors, LLC | 256 | $46.9K | 0.01% | +256 | New |
| CoreCap Advisors, LLC | 254 | $46.6K | 0.00% | −3,022−92.2% | Reduced |
| WFA of San Diego, LLC | 251 | $46.0K | 0.04% | −2−0.8% | Reduced |
| SHP Wealth Management | 242 | $44.3K | 0.00% | +19+8.5% | Added |
| GW&K Investment Management, LLC | 239 | $44.0K | 0.00% | 00.0% | Unchanged |
| Capital Advisors, Ltd. LLC | 232 | $43.0K | 0.00% | 00.0% | Unchanged |
| Keating Financial Advisory Services, Inc. | 228 | $41.8K | 0.01% | +33+16.9% | Added |
| Ancora Advisors, LLC | 224 | $41.1K | 0.00% | +100+80.6% | Added |
| Wall Street Financial Group, Inc. | 224 | $41.1K | 0.02% | +224 | New |
| Cassaday & Co Wealth Management LLC | 218 | $40.0K | 0.00% | +218 | New |
| Bogart Wealth, LLC | 215 | $39.4K | 0.00% | −294−57.8% | Reduced |
| WealthCollab, LLC | 206 | $37.8K | 0.02% | 00.0% | Unchanged |
| ZRC Wealth Management, LLC | 204 | $37.4K | 0.01% | +4+2.0% | 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 |
| 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 |
| GoalVest Advisory LLC | 198 | $36.3K | 0.01% | 00.0% | Unchanged |
| Intentional Wealth Strategies, LLC | 198 | $36.3K | 0.03% | +198 | New |
| Quintet Private Bank (Europe) S.A. | 195 | $35.7K | 0.00% | 00.0% | Unchanged |
| WPG Advisers, LLC | 189 | $34.6K | 0.03% | +44+30.3% | Added |
| Principia Wealth Advisory, LLC | 186 | $34.1K | 0.02% | +1+0.5% | 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 |
| First Horizon Corp | 181 | $33.2K | 0.00% | +12+7.1% | Added |
| Central Trust Co | 163 | $29.9K | 0.00% | 00.0% | Unchanged |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 160 | $29.3K | 0.01% | 00.0% | Unchanged |
| Highline Wealth Partners LLC | 157 | $28.8K | 0.01% | +157 | New |
| Addison Advisors LLC | 154 | $28.2K | 0.01% | +3+2.0% | Added |
| Johnson Financial Group, Inc. | 150 | $27.5K | 0.00% | +35+30.4% | Added |
| Ogorek Anthony Joseph | 152 | $27.0K | 0.01% | 00.0% | Unchanged |
| Stephenson National Bank & Trust | 145 | $26.6K | 0.01% | +8+5.8% | Added |
| NBT Bank N A | 138 | $25.3K | 0.00% | +12+9.5% | Added |
| Twin Peaks Wealth Advisors, LLC | 127 | $23.3K | 0.01% | +127 | New |
| Bell Investment Advisors, Inc | 124 | $22.7K | 0.00% | 00.0% | Unchanged |
| Ares Financial Consulting, LLC | 123 | $22.6K | 0.02% | +98+392.0% | Added |
| SMA Capital LLC | 120 | $22.0K | 0.01% | +120 | New |
| Atlantic Union Bankshares Corp | 117 | $21.4K | 0.00% | +2+1.7% | Added |
| Sittner & Nelson, LLC | 110 | $20.2K | 0.01% | 00.0% | Unchanged |
| Bruce G. Allen Investments, LLC | 110 | $20.2K | 0.01% | 00.0% | Unchanged |
| Raiffeisen Bank International AG | 105 | $19.7K | 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 |
| 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 |
| Merrithew & Thorsten Inc | 106 | $19.0K | 0.02% | 00.0% | Unchanged |
| 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 |
| 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 |
| CKW Financial Group | 100 | $18.0K | 0.00% | 00.0% | Unchanged |
| Cornerstone Planning Group LLC | 95 | $18.0K | 0.00% | +54+131.7% | Added |
| Clayton Financial Group LLC | 97 | $17.8K | 0.01% | 00.0% | Unchanged |
| Spire Wealth Management | 96 | $17.6K | 0.00% | −63−39.6% | Reduced |
| Broadwater Capital Management LLC | 100 | $17.6K | 0.01% | 00.0% | Unchanged |
| E Fund Management (Hong Kong) Co., Ltd. | 95 | $17.4K | 0.01% | +78+458.8% | Added |
| VSM Wealth Advisory, LLC | 92 | $16.9K | 0.01% | 00.0% | Unchanged |
| Swiss Re Ltd | 90 | $16.5K | 0.10% | 00.0% | Unchanged |
| Grove Bank & Trust | 88 | $16.1K | 0.00% | +3+3.5% | Added |
| Quent Capital, LLC | 85 | $15.6K | 0.00% | −4−4.5% | Reduced |
| Brown Shipley& Co Ltd | 85 | $15.6K | 0.01% | 00.0% | Unchanged |
| Hara Capital LLC | 84 | $15.4K | 0.01% | 00.0% | Unchanged |
| Asset Planning,Inc | 84 | $15.4K | 0.01% | 00.0% | Unchanged |
| J.Safra Asset Management Corp | 82 | $15.0K | 0.00% | +55+203.7% | Added |
| Centerpoint Advisors, LLC | 83 | $15.0K | 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 |
| Adirondack Trust Co | 80 | $14.7K | 0.00% | 00.0% | Unchanged |
| 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 |
| Red Tortoise LLC | 74 | $13.6K | 0.01% | −6−7.5% | Reduced |
| United Financial Planning Group LLC | 74 | $13.6K | 0.01% | +74 | New |
| Medallion Wealth Advisors, LLC | 73 | $13.4K | 0.00% | 00.0% | Unchanged |
| Avion Wealth | 75 | $13.0K | 0.00% | +3+4.2% | Added |
| Sachetta, LLC | 70 | $12.8K | 0.01% | 00.0% | Unchanged |
| 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 |
| 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 |
| JFS Wealth Advisors, LLC | 68 | $12.5K | 0.00% | +5+7.9% | Added |
| First Command Advisory Services, Inc. | 67 | $12.3K | 0.00% | +67 | New |
| First Community Trust NA | 65 | $11.9K | 0.01% | 00.0% | Unchanged |
| SJS Investment Consulting Inc. | 62 | $11.4K | 0.00% | +50+416.7% | Added |
| Private Wealth Asset Management, LLC | 61 | $11.2K | 0.00% | −2−3.2% | Reduced |
| Westfuller Advisors, LLC | 60 | $11.0K | 0.00% | +1+1.7% | Added |
| Kemnay Advisory Services Inc. | 59 | $10.8K | 0.00% | +59 | New |
| Asset Dedication, LLC | 58 | $10.6K | 0.00% | +1+1.8% | Added |
| Salomon & Ludwin, LLC | 57 | $10.1K | 0.00% | 00.0% | Unchanged |
| Rossby Financial, LCC | 53 | $9.74K | 0.00% | +39+278.6% | Added |
| Raffa Wealth Management, LLC | 53 | $9.72K | 0.00% | +2+3.9% | Added |
| 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 |
| Timothy G. Youngquist 2020 Irrevocable Trust | 52 | $9.53K | 0.00% | +52 | New |
| Synergy Investment Management, LLC | 51 | $9.35K | 0.00% | +51 | New |
| Tradewinds Capital Management, LLC | 50 | $9.17K | 0.00% | 00.0% | Unchanged |