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; 1,046 institutions reported holding it in 13F filings for Q2 2026, worth $30.7B in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Biogen Inc. as of Jun 30, 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
- 1,046
- +42 vs. Q1 2026
- Shares held
- 142.3M
- +7.45M (+5.5%) vs. Q1 2026
- Total value
- $30.7B
- +$6.00B (+24.3%) vs. Q1 2026
- New holders
- 126
- 427 more added
- Sold out
- 84
- 296 more reduced
11 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 | 1,046 | $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, Q2 2026
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| LMR Partners LLP | 4,866 | $1.05M | 0.01% | −111,265−95.8% | Reduced |
| Prudential PLC | 4,924 | $1.06M | 0.01% | +2,416+96.3% | Added |
| Unison Advisors LLC | 5,078 | $1.10M | 0.08% | 00.0% | Unchanged |
| Spears Abacus Advisors LLC | 5,083 | $1.10M | 0.02% | 00.0% | Unchanged |
| Signaturefd, LLC | 5,094 | $1.10M | 0.01% | +486+10.5% | Added |
| Lombard Odier Asset Management (Switzerland) SA | 5,099 | $1.10M | 0.04% | +1,200+30.8% | Added |
| Coldstream Capital Management Inc | 5,115 | $1.11M | 0.01% | +453+9.7% | Added |
| Wiley Bros.-Aintree Capital, LLC | 5,128 | $1.11M | 0.00% | +91+1.8% | Added |
| Williamson Legacy Group, LLC | 5,129 | $1.11M | 0.55% | +5,129 | New |
| Pensionmark Financial Group, LLC | 6,038 | $1.11M | 0.02% | −44−0.7% | Reduced |
| Frank, Rimerman Advisors LLC | 5,197 | $1.12M | 0.06% | +3+0.1% | Added |
| Annis Gardner Whiting Capital Advisors, LLC | 5,233 | $1.13M | 0.17% | +41+0.8% | Added |
| Elevated Private Wealth, LLC | 5,234 | $1.13M | 1.08% | +5,234 | New |
| Empirical Finance, LLC | 5,240 | $1.13M | 0.05% | +170+3.4% | Added |
| Lido Advisors, LLC | 5,292 | $1.14M | 0.00% | +860+19.4% | Added |
| Independent Financial Group, LLC | 5,364 | $1.16M | 0.02% | +166+3.2% | Added |
| Dai-Ichi Life Insurance Company, Ltd | 5,397 | $1.17M | 0.03% | −411−7.1% | Reduced |
| Guardian Investment Management | 5,500 | $1.19M | 0.81% | 00.0% | Unchanged |
| Twin Tree Management, LP | 5,507 | $1.19M | 0.19% | +4,748+625.6% | Added |
| AIA Group Ltd | 5,545 | $1.20M | 0.02% | −3,784−40.6% | Reduced |
| Agp Franklin, LLC | 5,566 | $1.20M | 0.52% | +3,493+168.5% | Added |
| North Star Investment Management Corp. | 5,621 | $1.21M | 0.07% | 00.0% | Unchanged |
| Thrivent Financial for Lutherans | 5,713 | $1.23M | 0.00% | −4,002−41.2% | Reduced |
| MUFG Securities EMEA plc | 5,747 | $1.24M | 0.01% | −270−4.5% | Reduced |
| Assenagon Asset Management S.A. | 5,766 | $1.25M | 0.00% | −1,203−17.3% | Reduced |
| Virtus Investment Advisers, Inc. | 5,813 | $1.26M | 0.29% | +965+19.9% | Added |
| Sanctuary Advisors, LLC | 5,838 | $1.26M | 0.01% | +221+3.9% | Added |
| Beese Fulmer Investment Management, Inc. | 5,959 | $1.29M | 0.07% | +1,156+24.1% | Added |
| Emerald Advisers, LLC | 5,990 | $1.29M | 0.03% | −37−0.6% | Reduced |
| Mediolanum International Funds Ltd | 6,010 | $1.30M | 0.01% | −44−0.7% | Reduced |
| Bull Harbor Capital LLC | 6,026 | $1.30M | 0.25% | +949+18.7% | Added |
| Vinva Investment Management Ltd | 6,056 | $1.31M | 0.01% | +4,696+345.3% | Added |
| Rockefeller Capital Management L.P. | 6,128 | $1.32M | 0.00% | −633−9.4% | Reduced |
| Kestra Advisory Services, LLC | 6,154 | $1.33M | 0.00% | +344+5.9% | Added |
| HB Wealth Management, LLC | 6,176 | $1.33M | 0.01% | +495+8.7% | Added |
| Callan Family Office, LLC | 6,183 | $1.34M | 0.03% | −316−4.9% | Reduced |
| Metis Global Partners, LLC | 6,191 | $1.34M | 0.03% | +15+0.2% | Added |
| Sigma Planning Corp | 6,193 | $1.34M | 0.03% | −1,008−14.0% | Reduced |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 6,193 | $1.34M | 0.01% | 00.0% | Unchanged |
| Mogy Joel R Investment Counsel Inc | 6,260 | $1.35M | 0.08% | 00.0% | Unchanged |
| Econ Financial Services Corp | 6,300 | $1.36M | 0.64% | +1,903+43.3% | Added |
| denkapparat Operations GmbH | 6,338 | $1.37M | 0.45% | 00.0% | Unchanged |
| Nicolet Bankshares Inc | 6,476 | $1.37M | 0.04% | −40−0.6% | Reduced |
| Ballentine Partners, LLC | 6,407 | $1.38M | 0.02% | +57+0.9% | Added |
| Tokio Marine Asset Management Co Ltd | 6,428 | $1.39M | 0.04% | 00.0% | Unchanged |
| GAMMA Investing LLC | 6,462 | $1.40M | 0.05% | +469+7.8% | Added |
| Sagewood Asset Management LP | 6,484 | $1.40M | 0.32% | −9−0.1% | Reduced |
| Greenleaf Trust | 6,491 | $1.40M | 0.01% | +120+1.9% | Added |
| Vise Technologies, Inc. | 6,627 | $1.43M | 0.02% | +1,212+22.4% | Added |
| Bank of Hawaii | 6,780 | $1.46M | 0.07% | −59−0.9% | Reduced |
| Sig Brokerage, LP | 6,824 | $1.47M | 0.24% | +1,324+24.1% | Added |
| Arrowpoint Investment Partners (Singapore) Pte. Ltd. | 6,838 | $1.48M | 0.43% | +2,132+45.3% | Added |
| Ascent Group, LLC | 6,852 | $1.48M | 0.04% | +16+0.2% | Added |
| Plato Investment Management Ltd | 6,938 | $1.49M | 0.09% | +1,999+40.5% | Added |
| Stableford Capital II LLC | 6,912 | $1.49M | 0.52% | +8+0.1% | Added |
| Laird Norton Trust Company, LLC | 6,920 | $1.50M | 0.03% | +21+0.3% | Added |
| Citizens & Northern Corp | 6,943 | $1.50M | 0.34% | −194−2.7% | Reduced |
| GF Fund Management Co. Ltd. | 6,957 | $1.50M | 0.02% | −336−4.6% | Reduced |
| Kennondale Capital Management LLC | 6,967 | $1.51M | 1.00% | 00.0% | Unchanged |
| Canada Post Corp Registered Pension Plan | 6,973 | $1.51M | 0.05% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 7,005 | $1.51M | 0.00% | −29,048−80.6% | Reduced |
| United Capital Financial Advisers, LLC | 7,017 | $1.52M | 0.01% | +231+3.4% | Added |
| Summit Trail Advisors, LLC | 7,082 | $1.53M | 0.02% | +196+2.8% | Added |
| Two Sigma Investments, LP | 7,105 | $1.54M | 0.00% | −2,339−24.8% | Reduced |
| New Mexico Educational Retirement Board | 7,224 | $1.56M | 0.04% | +400+5.9% | Added |
| Park Avenue Securities LLC | 7,248 | $1.57M | 0.01% | +7,248 | New |
| Allspring Global Investments Holdings, LLC | 7,471 | $1.57M | 0.00% | +149+2.0% | Added |
| Kathmere Capital Management, LLC | 7,285 | $1.57M | 0.08% | +642+9.7% | Added |
| Northwestern Mutual Wealth Management Co | 7,299 | $1.58M | 0.00% | +253+3.6% | Added |
| Whittier Trust Co of Nevada Inc | 7,668 | $1.58M | 0.03% | −55−0.7% | Reduced |
| Hager Investment Management Services, LLC | 7,381 | $1.59M | 0.73% | +7,381 | New |
| CIBC World Markets Inc. | 7,424 | $1.60M | 0.00% | +7,424 | New |
| Generali Investments, Management Co LLC | 7,437 | $1.61M | 0.35% | +325+4.6% | Added |
| Jacobi Capital Management LLC | 7,462 | $1.61M | 0.08% | −187−2.4% | Reduced |
| Lighthouse Investment Partners, LLC | 7,500 | $1.62M | 0.05% | −25,132−77.0% | Reduced |
| Louisiana State Employees Retirement System | 7,500 | $1.62M | 0.02% | 00.0% | Unchanged |
| Buckingham Strategic Partners | 7,689 | $1.66M | 0.01% | −1,322−14.7% | Reduced |
| Keybank National Association | 7,775 | $1.68M | 0.01% | −1,059−12.0% | Reduced |
| Krilogy Financial LLC | 7,783 | $1.68M | 0.05% | +193+2.5% | Added |
| AG2R la Mondiale Gestion D'Actifs | 7,838 | $1.69M | 0.06% | −537−6.4% | Reduced |
| Maryland State Retirement & Pension System | 7,843 | $1.69M | 0.03% | +748+10.5% | Added |
| Allworth Financial LP | 8,033 | $1.74M | 0.01% | +3,822+90.8% | Added |
| Abn Amro Investment Solutions | 8,037 | $1.74M | 0.02% | +2,061+34.5% | Added |
| Cairn Investment Group, Inc. | 8,043 | $1.74M | 0.77% | 00.0% | Unchanged |
| Janney Montgomery Scott LLC | 8,100 | $1.75M | 0.00% | +8,100 | New |
| Cambridge Investment Research Advisors, Inc. | 8,104 | $1.75M | 0.00% | +4,991+160.3% | Added |
| Hartford Investment Management Co | 8,140 | $1.76M | 0.05% | −261−3.1% | Reduced |
| Quadrant Capital Group LLC | 8,289 | $1.79M | 0.05% | +121+1.5% | Added |
| Profund Advisors LLC | 8,560 | $1.85M | 0.05% | −3,401−28.4% | Reduced |
| Ci Investments Inc. | 8,582 | $1.85M | 0.01% | +4,504+110.4% | Added |
| M&G Plc | 8,593 | $1.86M | 0.01% | 00.0% | Unchanged |
| Sompo Asset Management Co., Ltd. | 8,596 | $1.86M | 0.30% | −180−2.1% | Reduced |
| Brighton Jones LLC | 8,636 | $1.87M | 0.03% | +585+7.3% | Added |
| Auxier Asset Management | 8,684 | $1.88M | 0.25% | −185−2.1% | Reduced |
| Glenmede Trust Co NA | 8,786 | $1.90M | 0.01% | −2,866−24.6% | Reduced |
| Bokf, NA | 8,918 | $1.93M | 0.03% | −801−8.2% | Reduced |
| Simplex Trading, LLC | 8,983 | $1.94M | 0.05% | +6,819+315.1% | Added |
| Birchview Capital, LP | 9,000 | $1.94M | 0.91% | +4,000+80.0% | Added |
| Kentucky Retirement Systems | 9,222 | $1.99M | 0.05% | −10,280−52.7% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 9,230 | $1.99M | 0.00% | +10+0.1% | Added |