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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 2025

Institutional positions in Biogen Inc. as of Mar 31, 2025. 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
882
+16 vs. Q4 2024
Shares held
129.8M
−2.03M (−1.5%) vs. Q4 2024
Total value
$17.7B
−$2.41B (−11.9%) vs. Q4 2024
New holders
123
331 more added
Sold out
107
273 more reduced

13 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2024: 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.

Institutional holdersQ1 2025: 882 institutions
Q1 2021: 1,096 institutionsQ2 2021: 1,107 institutionsQ3 2021: 1,044 institutionsQ4 2021: 1,014 institutionsQ1 2022: 954 institutionsQ2 2022: 930 institutionsQ3 2022: 987 institutionsQ4 2022: 1,033 institutionsQ1 2023: 1,004 institutionsQ2 2023: 1,009 institutionsQ3 2023: 966 institutionsQ4 2023: 1,005 institutionsQ1 2024: 955 institutionsQ2 2024: 947 institutionsQ3 2024: 921 institutionsQ4 2024: 879 institutionsQ1 2025: 882 institutionsQ2 2025: 867 institutionsQ3 2025: 909 institutionsQ4 2025: 1,002 institutionsQ1 2026: 1,015 institutionsQ2 2026: 1,047 institutions
Value heldQ1 2025: $17.7B
Q1 2021: $35.7BQ2 2021: $43.6BQ3 2021: $35.1BQ4 2021: $29.7BQ1 2022: $25.9BQ2 2022: $25.0BQ3 2022: $33.0BQ4 2022: $34.6BQ1 2023: $35.0BQ2 2023: $36.1BQ3 2023: $32.2BQ4 2023: $33.3BQ1 2024: $28.0BQ2 2024: $29.9BQ3 2024: $25.1BQ4 2024: $20.2BQ1 2025: $17.7BQ2 2025: $16.3BQ3 2025: $18.4BQ4 2025: $24.6BQ1 2026: $24.7BQ2 2026: $30.7B
Institutions holding BIIB and their total value by quarter
QuarterHoldersValue
Q2 20261,047$30.7B
Q1 20261,015$24.7B
Q4 20251,002$24.6B
Q3 2025909$18.4B
Q2 2025867$16.3B
Q1 2025882$17.7B
Q4 2024879$20.2B
Q3 2024921$25.1B
Q2 2024947$29.9B
Q1 2024955$28.0B
Q4 20231,005$33.3B
Q3 2023966$32.2B
Q2 20231,009$36.1B
Q1 20231,004$35.0B
Q4 20221,033$34.6B
Q3 2022987$33.0B
Q2 2022930$25.0B
Q1 2022954$25.9B
Q4 20211,014$29.7B
Q3 20211,044$35.1B
Q2 20211,107$43.6B
Q1 20211,096$35.7B

Institutions, Q1 2025

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q4 2024.

Institutions holding BIIB in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Ofi Invest Asset Management467$59.2K0.00%+248+113.2%Added
Richardson Financial Services Inc.437$59.8K0.05%00.0%Unchanged
North Capital, Inc.438$59.9K0.06%+438New
Grove Bank & Trust444$60.8K0.01%+319+255.2%Added
Caitong International Asset Management Co., Ltd448$61.3K0.05%+300+202.7%Added
Paradigm Asset Management Co LLC455$62.3K0.02%00.0%Unchanged
Umb Bank N A472$64.6K0.00%+221+88.0%Added
Intact Investment Management Inc.500$68.4K0.00%+500New
Curat Global, LLC503$68.8K0.08%+503New
Capital Analysts, LLC501$69.0K0.00%00.0%Unchanged
Massmutual Trust Co FSB510$69.8K0.00%+238+87.5%Added
Hanson & Doremus Investment Management525$72.0K0.01%00.0%Unchanged
Aventura Private Wealth, LLC540$73.9K0.04%−59−9.8%Reduced
Salem Investment Counselors Inc567$77.6K0.00%00.0%Unchanged
MAI Capital Management582$79.6K0.00%−44−7.0%Reduced
Ronald Blue Trust, Inc.585$80.1K0.00%+11+1.9%Added
Tidemark, LLC592$81.0K0.03%00.0%Unchanged
JNBA Financial Advisors626$85.7K0.01%−240−27.7%Reduced
Horizon Bancorp Inc627$86.0K0.05%+166+36.0%Added
Covestor Ltd642$88.0K0.06%+317+97.5%Added
Caldwell Trust Co654$89.5K0.01%−8−1.2%Reduced
City State Bank692$94.7K0.03%00.0%Unchanged
GPS Wealth Strategies Group, LLC725$99.2K0.01%−12−1.6%Reduced
Towarzystwo Funduszy Inwestycyjnych Pzu SA750$102.6K0.03%+280+59.6%Added
Centennial Bank800$109.5K0.05%00.0%Unchanged
Bryn Mawr Trust Co806$110.3K0.00%+64+8.6%Added
Pin Oak Investment Advisors Inc820$113.0K0.09%00.0%Unchanged
Boston Private Wealth LLC855$117.0K0.00%−1,232−59.0%Reduced
Eastern Bank856$117.1K0.00%00.0%Unchanged
IFP Advisors, Inc865$118.4K0.00%+70+8.8%Added
BNP Paribas874$119.6K0.00%+70+8.7%Added
Allworth Financial LP1,017$121.6K0.00%+469+85.6%Added
Alpine Bank Wealth Management895$122.5K0.02%+895New
Manchester Capital Management LLC898$122.9K0.02%+12+1.4%Added
TCTC Holdings, LLC900$123.2K0.00%00.0%Unchanged
Acima Private Wealth, LLC916$125.3K0.04%00.0%Unchanged
Quintet Private Bank (Europe) S.A.927$126.9K0.01%−488−34.5%Reduced
Mascoma Wealth Management LLC927$126.9K0.03%00.0%Unchanged
Skopos Labs, Inc.929$127.1K0.03%+309+49.8%Added
Legacy Bridge, LLC941$128.8K0.07%+1+0.1%Added
CIBC Private Wealth Group, LLC1,162$132.5K0.00%−222−16.0%Reduced
EverSource Wealth Advisors, LLC992$135.7K0.01%−456−31.5%Reduced
Trust Co of Vermont1,049$143.5K0.01%00.0%Unchanged
Steward Partners Investment Advisory, LLC1,072$146.7K0.00%−409−27.6%Reduced
Plato Investment Management Ltd1,070$148.0K0.01%+33+3.2%Added
Farther Finance Advisors, LLC1,127$148.8K0.00%−468−29.3%Reduced
Lindbrook Capital, LLC1,100$150.5K0.01%+476+76.3%Added
New Age Alpha Advisors, LLC1,110$151.9K0.01%+1,110New
Whittier Trust Co1,188$162.6K0.00%−68−5.4%Reduced
Clearstead Advisors, LLC1,193$163.3K0.00%+75+6.7%Added
CX Institutional1,315$180.0K0.01%+1,315New
Nexus Investment Management ULC920$181.1K0.02%+920New
Deseret Mutual Benefit Administrators1,388$189.9K0.09%−224−13.9%Reduced
S-Bank Fund Management Ltd1,416$193.8K0.04%+1,416New
Livforsakringsbolaget Skandia, Omsesidigt1,430$195.6K0.01%00.0%Unchanged
Parkside Financial Bank & Trust1,431$195.8K0.02%+23+1.6%Added
STF Management LP1,442$197.3K0.09%+108+8.1%Added
Wesbanco Bank Inc1,464$200.3K0.01%+6+0.4%Added
IHT Wealth Management, LLC1,480$202.6K0.01%+1,480New
FineMark National Bank & Trust1,486$203.3K0.01%00.0%Unchanged
Capital Performance Advisors LLP1,495$204.6K0.05%+1,495New
Supplemental Annuity Collective Trust of NJ1,500$205.3K0.06%00.0%Unchanged
Virtue Capital Management, LLC1,508$206.5K0.02%+8+0.5%Added
Johnson Investment Counsel Inc1,513$207.0K0.00%−166−9.9%Reduced
D.A. Davidson & Co.1,518$207.7K0.00%−99−6.1%Reduced
HighPoint Advisor Group LLC1,736$208.6K0.01%−198−10.2%Reduced
Analyst IMS Investment Management Services Ltd.1,527$209.0K0.01%00.0%Unchanged
Wedbush Securities Inc1,535$210.0K0.01%+1,535New
We Are One Seven, LLC1,547$211.7K0.01%+1,547New
Quadrant Capital Group LLC1,556$212.9K0.01%+887+132.6%Added
Plancorp, LLC1,587$217.2K0.01%+65+4.3%Added
Raiffeisen Bank International AG1,571$217.3K0.00%00.0%Unchanged
ASR Vermogensbeheer N.V.1,590$217.6K0.00%+1,590New
Waterfront Wealth Inc.1,593$218.0K0.05%+1,593New
Lighthouse Financial LLC1,600$218.9K0.19%−500−23.8%Reduced
Meeder Advisory Services, Inc.1,610$220.3K0.01%+218+15.7%Added
Parallel Advisors, LLC1,610$220.3K0.00%+290+22.0%Added
Pictet & Cie (Europe) SA1,614$220.9K0.01%+1,614New
Verdence Capital Advisors LLC1,624$222.2K0.02%−31−1.9%Reduced
Sava Infond d.o.o.1,650$225.8K0.04%00.0%Unchanged
Cidel Asset Management Inc1,672$228.8K0.01%+160+10.6%Added
Kennedy Investment Group1,673$228.9K0.11%−248−12.9%Reduced
Trust Asset Management LLC1,675$229.2K0.02%+13+0.8%Added
Hancock Whitney Corp1,680$229.9K0.01%−130−7.2%Reduced
Resources Investment Advisors, LLC.1,688$231.0K0.00%+1,688New
Kaufman Rossin Wealth, LLC1,690$231.3K0.17%+1,690New
Atria Investments LLC1,697$232.2K0.00%−126−6.9%Reduced
Sumitomo Life Insurance Co1,711$234.1K0.01%−19−1.1%Reduced
Parcion Private Wealth LLC1,724$235.9K0.02%+1,724New
AE Wealth Management LLC1,731$236.8K0.00%+141+8.9%Added
LGT Fund Management Co Ltd.1,744$238.6K0.02%00.0%Unchanged
Wedmont Private Capital2,109$242.9K0.01%−1,561−42.5%Reduced
MQS Management LLC1,787$244.5K0.14%+1,787New
Perpetual Ltd1,797$245.9K0.00%+1,797New
Wiley Bros.-Aintree Capital, LLC1,783$247.0K0.00%+62+3.6%Added
Trail Ridge Investment Advisors, LLC1,807$247.3K0.13%00.0%Unchanged
Boothbay Fund Management, LLC1,810$247.7K0.01%+1,810New
Cura Wealth Advisors, LLC1,812$248.0K0.10%00.0%Unchanged
Nicolet Bankshares Inc1,816$248.5K0.05%−149−7.6%Reduced
Y-Intercept (Hong Kong) Ltd1,838$251.5K0.02%−13,310−87.9%Reduced