# BIOGEN INC (BIIB)

> Institutional ownership reported to the SEC as of Q3 2026, from Form 13F filings. Source: https://holderbook.com/stocks/BIIB/

- Reporting holders: 38
- Reported value: $148.1M
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [Artemis Investment Management LLP](https://holderbook.com/funds/1535385-artemis-investment-management-llp/) | $131.4M | 581,774 | 1.1% | 4 |
| [Insight Wealth Strategies, LLC](https://holderbook.com/funds/1749914-insight-wealth-strategies-llc/) | $7.7M | 34,161 | 0.8% | 4 |
| [GAMMA Investing LLC](https://holderbook.com/funds/2010235-gamma-investing-llc/) | $1.5M | 6,832 | 0.1% | 12 |
| [STABLEFORD CAPITAL II LLC](https://holderbook.com/funds/1842089-stableford-capital-ii-llc/) | $1.5M | 6,731 | 0.5% | 4 |
| [Farther Finance Advisors, LLC](https://holderbook.com/funds/1992825-farther-finance-advisors-llc/) | $845.2K | 3,742 | 0.0% | 16 |
| [Wedmont Private Capital](https://holderbook.com/funds/1904274-wedmont-private-capital/) | $757.3K | 3,467 | 0.0% | 17 |
| [TOMPKINS FINANCIAL CORP](https://holderbook.com/funds/1005817-tompkins-financial-corp/) | $496.9K | 2,200 | 0.0% | 2 |
| [Boltwood Capital Management](https://holderbook.com/funds/1563690-boltwood-capital-management/) | $447.7K | 1,982 | 0.1% | 4 |
| [Everhart Financial Group, Inc.](https://holderbook.com/funds/1852858-everhart-financial-group-inc/) | $415.6K | 1,840 | 0.0% | 4 |
| [RIVERSEDGE ADVISORS, LLC](https://holderbook.com/funds/1787663-riversedge-advisors-llc/) | $398.7K | 1,765 | 0.0% | 4 |
| [Versant Capital Management, Inc](https://holderbook.com/funds/1735057-versant-capital-management-inc/) | $357.1K | 1,581 | 0.0% | 32 |
| [Investors Research Corp](https://holderbook.com/funds/1730630-investors-research-corp/) | $351.9K | 1,558 | 0.1% | 6 |
| [Valeo Financial Advisors, LLC](https://holderbook.com/funds/1722641-valeo-financial-advisors-llc/) | $297.2K | 1,316 | 0.0% | 2 |
| [Financial Symmetry Inc](https://holderbook.com/funds/2004843-financial-symmetry-inc/) | $281.8K | 1,248 | 0.1% | 3 |
| [CoreCap Advisors, LLC](https://holderbook.com/funds/1902501-corecap-advisors-llc/) | $238.8K | 1,057 | 0.0% | 11 |
| [ACIMA PRIVATE WEALTH, LLC](https://holderbook.com/funds/1761961-acima-private-wealth-llc/) | $188.4K | 834 | 0.1% | 32 |
| [EASTERN BANK](https://holderbook.com/funds/1126395-eastern-bank/) | $179.8K | 796 | 0.0% | 9 |
| [MassMutual Private Wealth & Trust, FSB](https://holderbook.com/funds/1103653-massmutual-private-wealth-trust-fsb/) | $147.5K | 653 | 0.0% | 32 |
| [ARMSTRONG ADVISORY GROUP, INC](https://holderbook.com/funds/1932952-armstrong-advisory-group-inc/) | $100.1K | 443 | 0.0% | 2 |
| [Trust Co](https://holderbook.com/funds/1632554-trust-co/) | $62.6K | 277 | 0.0% | 25 |
| [ELEVATION WEALTH PARTNERS, LLC](https://holderbook.com/funds/1976256-elevation-wealth-partners-llc/) | $50.1K | 222 | 0.0% | 15 |
| [GoalVest Advisory LLC](https://holderbook.com/funds/1839307-goalvest-advisory-llc/) | $44.7K | 198 | 0.0% | 4 |
| [Quintet Private Bank (Europe) S.A.](https://holderbook.com/funds/1977290-quintet-private-bank-europe-s-a/) | $44.0K | 195 | 0.0% | 16 |
| [GK Wealth Management LLC](https://holderbook.com/funds/2069222-gk-wealth-management-llc/) | $39.1K | 173 | 0.0% | 1 |
| [STEPH & CO](https://holderbook.com/funds/941519-steph-co/) | $34.3K | 152 | 0.0% | 11 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q3 2026 | 38 | $148.1M |
| Q2 2026 | 1,052 | $34.0B |
| Q1 2026 | 1,013 | $25.4B |
| Q4 2025 | 1,009 | $26.0B |
| Q3 2025 | 916 | $19.6B |
| Q2 2025 | 870 | $17.2B |
| Q1 2025 | 882 | $18.7B |
| Q4 2024 | 881 | $20.9B |
| Q3 2024 | 923 | $26.6B |
| Q2 2024 | 954 | $31.7B |
| Q1 2024 | 960 | $30.3B |
| Q4 2023 | 1,013 | $36.3B |