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 |
|---|---|---|---|---|---|
| Yousif Capital Management, LLC | 14,134 | $3.05M | 0.03% | −1,072−7.0% | Reduced |
| Gabelli Funds LLC | 14,100 | $3.05M | 0.02% | 00.0% | Unchanged |
| Canada Pension Plan Investment Board | 13,602 | $2.94M | 0.00% | −101,336−88.2% | Reduced |
| Advisor Group Holdings, Inc. | 13,479 | $2.91M | 0.00% | +1,474+12.3% | Added |
| Allstate Corp | 13,369 | $2.89M | 0.03% | −4,186−23.8% | Reduced |
| Advisors Asset Management, Inc. | 13,312 | $2.88M | 0.04% | +6,881+107.0% | Added |
| Neuberger Berman Group LLC | 13,048 | $2.82M | 0.00% | +1,397+12.0% | Added |
| Triglav Skladi, D.O.O. | 12,976 | $2.80M | 0.15% | +548+4.4% | Added |
| Pallas Capital Advisors LLC | 12,859 | $2.78M | 0.09% | +896+7.5% | Added |
| Sivik Global Healthcare LLC | 15,000 | $2.75M | 2.09% | 00.0% | Unchanged |
| Merit Financial Group, LLC | 12,725 | $2.75M | 0.02% | +1,295+11.3% | Added |
| Fideuram Asset Management (Ireland) dac | 13,094 | $2.74M | 0.05% | +13,094 | New |
| Truist Financial Corp | 12,621 | $2.73M | 0.00% | +1,055+9.1% | Added |
| Marshall Wace, LLP | 12,595 | $2.72M | 0.00% | −217,284−94.5% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 12,258 | $2.65M | 0.02% | −17,467−58.8% | Reduced |
| Beacon Investment Advisory Services, Inc. | 12,229 | $2.64M | 0.10% | −85−0.7% | Reduced |
| Natixis | 11,907 | $2.57M | 0.01% | −10,678−47.3% | Reduced |
| Avanza Fonder AB | 11,760 | $2.54M | 0.06% | −2,861−19.6% | Reduced |
| Turn8 Private Wealth Inc. | 12,068 | $2.53M | 1.69% | +12,068 | New |
| Commerce Bank | 11,672 | $2.52M | 0.01% | +4,598+65.0% | Added |
| Public Employees Retirement Association of Colorado | 11,669 | $2.52M | 0.01% | 00.0% | Unchanged |
| Mizuho Securities USA LLC | 11,558 | $2.50M | 0.04% | +2,686+30.3% | Added |
| Banque Cantonale Vaudoise | 11,496 | $2.48M | 0.10% | +3,568+45.0% | Added |
| Teachers Retirement System of the State of Kentucky | 11,437 | $2.47M | 0.02% | 00.0% | Unchanged |
| Jane Street Group, LLC | 11,435 | $2.47M | 0.00% | +966+9.2% | Added |
| Catalyst Funds Management Pty Ltd | 11,400 | $2.46M | 0.14% | −570−4.8% | Reduced |
| Macquarie Group Ltd | 11,330 | $2.45M | 0.01% | +2,818+33.1% | Added |
| Gulf International Bank (UK) Ltd | 11,183 | $2.42M | 0.05% | −257−2.2% | Reduced |
| PensionDanmark Pensionsforsikringsaktieselskab | 10,506 | $2.27M | 0.02% | −488−4.4% | Reduced |
| BI Asset Management Fondsmaeglerselskab A/S | 10,446 | $2.26M | 0.02% | +2,560+32.5% | Added |
| CenterBook Partners LP | 10,418 | $2.25M | 0.11% | +10,418 | New |
| Brinker Capital Investments, LLC | 10,358 | $2.24M | 0.02% | +1,861+21.9% | Added |
| Saudi Central Bank | 10,273 | $2.22M | 0.03% | +4,858+89.7% | Added |
| Missouri Trust & Investment Co | 10,795 | $2.19M | 0.60% | +415+4.0% | Added |
| Kennedy Capital Management, Inc. | 10,098 | $2.18M | 0.04% | +290+3.0% | Added |
| Thor Investment Management Inc | 10,002 | $2.16M | 1.23% | +81+0.8% | Added |
| Canal Insurance CO | 10,000 | $2.16M | 0.47% | −10,000−50.0% | Reduced |
| K.J. Harrison & Partners Inc | 10,000 | $2.16M | 0.31% | 00.0% | Unchanged |
| Crossmark Global Holdings, Inc. | 9,980 | $2.16M | 0.03% | +19+0.2% | Added |
| Pinnacle Financial Partners, Inc. | 9,892 | $2.14M | 0.01% | −33−0.3% | Reduced |
| Great Lakes Advisors, LLC | 9,477 | $2.05M | 0.02% | −13−0.1% | Reduced |
| Integrated Wealth Concepts LLC | 9,426 | $2.04M | 0.01% | +1,810+23.8% | Added |
| Sequoia Financial Advisors, LLC | 9,388 | $2.03M | 0.01% | −565−5.7% | Reduced |
| Investment Management Corp of Ontario | 9,334 | $2.02M | 0.03% | −1,200−11.4% | Reduced |
| Brown Brothers Harriman & Co | 9,312 | $2.01M | 0.01% | +3,019+48.0% | Added |
| Norinchukin Bank, The | 9,240 | $2.00M | 0.02% | +20+0.2% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 9,230 | $1.99M | 0.00% | +10+0.1% | Added |
| Kentucky Retirement Systems | 9,222 | $1.99M | 0.05% | −10,280−52.7% | Reduced |
| Birchview Capital, LP | 9,000 | $1.94M | 0.91% | +4,000+80.0% | Added |
| Simplex Trading, LLC | 8,983 | $1.94M | 0.05% | +6,819+315.1% | Added |
| Bokf, NA | 8,918 | $1.93M | 0.03% | −801−8.2% | Reduced |
| Glenmede Trust Co NA | 8,786 | $1.90M | 0.01% | −2,866−24.6% | Reduced |
| Auxier Asset Management | 8,684 | $1.88M | 0.25% | −185−2.1% | Reduced |
| Brighton Jones LLC | 8,636 | $1.87M | 0.03% | +585+7.3% | Added |
| Sompo Asset Management Co., Ltd. | 8,596 | $1.86M | 0.30% | −180−2.1% | Reduced |
| M&G Plc | 8,593 | $1.86M | 0.01% | 00.0% | Unchanged |
| Ci Investments Inc. | 8,582 | $1.85M | 0.01% | +4,504+110.4% | Added |
| Profund Advisors LLC | 8,560 | $1.85M | 0.05% | −3,401−28.4% | Reduced |
| Quadrant Capital Group LLC | 8,289 | $1.79M | 0.05% | +121+1.5% | Added |
| Hartford Investment Management Co | 8,140 | $1.76M | 0.05% | −261−3.1% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 8,104 | $1.75M | 0.00% | +4,991+160.3% | Added |
| Janney Montgomery Scott LLC | 8,100 | $1.75M | 0.00% | +8,100 | New |
| Cairn Investment Group, Inc. | 8,043 | $1.74M | 0.77% | 00.0% | Unchanged |
| Abn Amro Investment Solutions | 8,037 | $1.74M | 0.02% | +2,061+34.5% | Added |
| Allworth Financial LP | 8,033 | $1.74M | 0.01% | +3,822+90.8% | Added |
| Maryland State Retirement & Pension System | 7,843 | $1.69M | 0.03% | +748+10.5% | Added |
| AG2R la Mondiale Gestion D'Actifs | 7,838 | $1.69M | 0.06% | −537−6.4% | Reduced |
| Krilogy Financial LLC | 7,783 | $1.68M | 0.05% | +193+2.5% | Added |
| Keybank National Association | 7,775 | $1.68M | 0.01% | −1,059−12.0% | Reduced |
| Buckingham Strategic Partners | 7,689 | $1.66M | 0.01% | −1,322−14.7% | 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 |
| Jacobi Capital Management LLC | 7,462 | $1.61M | 0.08% | −187−2.4% | Reduced |
| Generali Investments, Management Co LLC | 7,437 | $1.61M | 0.35% | +325+4.6% | Added |
| CIBC World Markets Inc. | 7,424 | $1.60M | 0.00% | +7,424 | New |
| Hager Investment Management Services, LLC | 7,381 | $1.59M | 0.73% | +7,381 | New |
| Whittier Trust Co of Nevada Inc | 7,668 | $1.58M | 0.03% | −55−0.7% | Reduced |
| Northwestern Mutual Wealth Management Co | 7,299 | $1.58M | 0.00% | +253+3.6% | Added |
| Kathmere Capital Management, LLC | 7,285 | $1.57M | 0.08% | +642+9.7% | Added |
| Allspring Global Investments Holdings, LLC | 7,471 | $1.57M | 0.00% | +149+2.0% | Added |
| Park Avenue Securities LLC | 7,248 | $1.57M | 0.01% | +7,248 | New |
| New Mexico Educational Retirement Board | 7,224 | $1.56M | 0.04% | +400+5.9% | Added |
| Two Sigma Investments, LP | 7,105 | $1.54M | 0.00% | −2,339−24.8% | Reduced |
| Summit Trail Advisors, LLC | 7,082 | $1.53M | 0.02% | +196+2.8% | Added |
| United Capital Financial Advisers, LLC | 7,017 | $1.52M | 0.01% | +231+3.4% | Added |
| Squarepoint Ops LLC | 7,005 | $1.51M | 0.00% | −29,048−80.6% | Reduced |
| Canada Post Corp Registered Pension Plan | 6,973 | $1.51M | 0.05% | 00.0% | Unchanged |
| Kennondale Capital Management LLC | 6,967 | $1.51M | 1.00% | 00.0% | Unchanged |
| GF Fund Management Co. Ltd. | 6,957 | $1.50M | 0.02% | −336−4.6% | Reduced |
| Citizens & Northern Corp | 6,943 | $1.50M | 0.34% | −194−2.7% | Reduced |
| Laird Norton Trust Company, LLC | 6,920 | $1.50M | 0.03% | +21+0.3% | Added |
| Stableford Capital II LLC | 6,912 | $1.49M | 0.52% | +8+0.1% | Added |
| Plato Investment Management Ltd | 6,938 | $1.49M | 0.09% | +1,999+40.5% | Added |
| Ascent Group, LLC | 6,852 | $1.48M | 0.04% | +16+0.2% | Added |
| Arrowpoint Investment Partners (Singapore) Pte. Ltd. | 6,838 | $1.48M | 0.43% | +2,132+45.3% | Added |
| Sig Brokerage, LP | 6,824 | $1.47M | 0.24% | +1,324+24.1% | Added |
| Bank of Hawaii | 6,780 | $1.46M | 0.07% | −59−0.9% | Reduced |
| Vise Technologies, Inc. | 6,627 | $1.43M | 0.02% | +1,212+22.4% | Added |
| Greenleaf Trust | 6,491 | $1.40M | 0.01% | +120+1.9% | Added |
| Sagewood Asset Management LP | 6,484 | $1.40M | 0.32% | −9−0.1% | Reduced |