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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, Q2 2025

Institutional positions in Biogen Inc. as of Jun 30, 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
867
−3 vs. Q1 2025
Shares held
130.1M
+498.1K (+0.4%) vs. Q1 2025
Total value
$16.3B
−$1.38B (−7.8%) vs. Q1 2025
New holders
96
342 more added
Sold out
99
263 more reduced

12 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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.

Institutional holdersQ2 2025: 867 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 heldQ2 2025: $16.3B
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, Q2 2025

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q1 2025.

Institutions holding BIIB in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Vision Financial Markets LLC200$25.1K0.02%00.0%Unchanged
Mount Yale Investment Advisors, LLC200$25.1K0.00%+200New
Opal Wealth Advisors, LLC186$23.4K0.01%−5−2.6%Reduced
Capital Advisors, Ltd. LLC180$23.0K0.00%−68−27.4%Reduced
Principia Wealth Advisory, LLC183$23.0K0.02%+13+7.6%Added
MV Capital Management, Inc.180$22.6K0.00%+111+160.9%Added
Rakuten Securities, Inc.179$22.5K0.01%+92+105.7%Added
WealthCollab, LLC171$21.5K0.01%+8+4.9%Added
Ogorek Anthony Joseph172$21.0K0.01%+106+160.6%Added
Private Trust Co NA166$20.8K0.00%−63−27.5%Reduced
Central Trust Co163$20.5K0.00%−40−19.7%Reduced
Trust Co163$20.5K0.00%00.0%Unchanged
AllSquare Wealth Management LLC153$19.2K0.01%00.0%Unchanged
NBC Securities, Inc.154$19.0K0.00%−103−40.1%Reduced
Spire Wealth Management148$18.6K0.00%−23−13.5%Reduced
Rise Advisors, LLC148$18.6K0.01%00.0%Unchanged
True Wealth Design, LLC143$18.0K0.01%+118+472.0%Added
Addison Advisors LLC126$15.8K0.00%+114+950.0%Added
Asset Planning,Inc126$15.8K0.01%00.0%Unchanged
North Capital, Inc.116$14.6K0.01%−322−73.5%Reduced
Medallion Wealth Advisors, LLC115$14.4K0.01%00.0%Unchanged
Atlantic Union Bankshares Corp115$14.4K0.00%+115New
First Horizon Advisors, Inc.110$13.9K0.00%+6+5.8%Added
Sittner & Nelson, LLC110$13.8K0.01%00.0%Unchanged
Graney & King, LLC106$13.3K0.01%00.0%Unchanged
Bruce G. Allen Investments, LLC105$13.2K0.01%+38+56.7%Added
CKW Financial Group100$13.0K0.00%00.0%Unchanged
Bell Investment Advisors, Inc102$12.8K0.00%−32−23.9%Reduced
Global Retirement Partners, LLC102$12.8K0.00%+102New
Delta Asset Management LLC100$12.6K0.00%00.0%Unchanged
Broadwater Capital Management LLC12,559$12.6K0.01%+12,459+12,459.0%Added
Strengthening Families & Communities, LLC100$12.6K0.01%+100New
Livelsberger Financial Advisory100$12.6K0.24%+100New
South State Corp.95$11.9K0.00%+23+31.9%Added
VSM Wealth Advisory, LLC92$11.6K0.00%00.0%Unchanged
Ransom Advisory, Ltd90$11.3K0.01%−50−35.7%Reduced
Catalyst Capital Advisors LLC89$11.2K0.00%−25−21.9%Reduced
Red Tortoise LLC89$11.2K0.01%+76+584.6%Added
Brown Shipley& Co Ltd85$10.7K0.01%−22−20.6%Reduced
Hara Capital LLC84$10.6K0.01%00.0%Unchanged
Union Bancaire Privee, UBP SA82$10.3K0.00%00.0%Unchanged
GHP Investment Advisors, Inc.82$10.3K0.00%−5−5.7%Reduced
Atlantic Trust, LLC82$10.3K0.00%+55+203.7%Added
RMG Wealth Management LLC80$10.1K0.00%+80New
Adirondack Trust Co80$10.0K0.00%00.0%Unchanged
Centerpoint Advisors, LLC83$10.0K0.00%00.0%Unchanged
Geneos Wealth Management Inc.79$9.92K0.00%00.0%Unchanged
Stephenson National Bank & Trust75$9.42K0.00%00.0%Unchanged
Independence Bank of Kentucky75$9.42K0.00%00.0%Unchanged
Cetera Trust Company, N.A75$9.42K0.01%00.0%Unchanged
Mountain Hill Investment Partners Corp.75$9.42K0.01%00.0%Unchanged
Asset Dedication, LLC74$9.29K0.00%−30−28.8%Reduced
Harbor Investment Advisory, LLC74$9.29K0.00%+56+311.1%Added
Twin Peaks Wealth Advisors, LLC70$9.03K0.00%+70New
Avion Wealth74$9.00K0.00%+53+252.4%Added
Sachetta, LLC70$8.79K0.00%+42+150.0%Added
Smallwood Wealth Investment Management, LLC70$8.79K0.01%00.0%Unchanged
Truvestments Capital LLC68$8.57K0.00%00.0%Unchanged
Kestra Investment Management, LLC62$8.48K0.00%00.0%Unchanged
First Community Trust NA65$8.16K0.01%00.0%Unchanged
Future Financial Wealth Managment LLC65$8.16K0.01%00.0%Unchanged
Private Wealth Asset Management, LLC63$7.91K0.00%00.0%Unchanged
Montag A & Associates Inc60$7.54K0.00%−149−71.3%Reduced
Cornerstone Planning Group LLC52$6.91K0.00%+38+271.4%Added
Grove Bank & Trust51$6.41K0.00%−393−88.5%Reduced
Tradewinds Capital Management, LLC50$6.28K0.00%00.0%Unchanged
Financial Freedom, LLC50$6.28K0.00%00.0%Unchanged
Millstone Evans Group, LLC50$6.28K0.00%00.0%Unchanged
Meeder Asset Management Inc50$6.28K0.00%+12+31.6%Added
Marshall & Sterling Wealth Advisors Inc.49$6.15K0.00%+1+2.1%Added
Tortoise Investment Management, LLC49$6.15K0.00%+9+22.5%Added
Private Wealth Management Group, LLC47$5.90K0.00%−60−56.1%Reduced
West Oak Capital, LLC45$5.70K0.00%00.0%Unchanged
Activest Wealth Management43$5.40K0.00%+43New
McIlrath & Eck, LLC43$5.36K0.00%00.0%Unchanged
UMA Financial Services, Inc.42$5.28K0.00%−2−4.5%Reduced
Bank Julius Baer & Co. Ltd, Zurich40$5.03K0.00%00.0%Unchanged
Cullen/Frost Bankers, Inc.40$5.02K0.00%00.0%Unchanged
Anchor Investment Management, LLC40$5.02K0.00%00.0%Unchanged
E Fund Management (Hong Kong) Co., Ltd.40$5.02K0.00%00.0%Unchanged
Hemington Wealth Management45$5.00K0.00%−25−35.7%Reduced
Wood Tarver Financial Group, LLC44$5.00K0.00%00.0%Unchanged
Johnson Financial Group, Inc.39$4.90K0.00%00.0%Unchanged
Prestige Wealth Management Group LLC38$4.77K0.00%+3+8.6%Added
Webster Bank, N. A.36$4.52K0.00%00.0%Unchanged
High Note Wealth, LLC35$4.40K0.00%00.0%Unchanged
Rosenberg Matthew Hamilton35$4.40K0.00%00.0%Unchanged
Caldwell Sutter Capital, Inc.34$4.27K0.00%00.0%Unchanged
Whipplewood Advisors, LLC32$4.02K0.00%+4+14.3%Added
Pinnacle Bancorp, Inc.32$4.02K0.00%+9+39.1%Added
Howard Hughes Medical Institute31$3.89K0.00%+31New
ZRC Wealth Management, LLC30$3.77K0.00%00.0%Unchanged
Barrett & Company, Inc.30$3.77K0.00%00.0%Unchanged
St Germain D J Co Inc30$3.77K0.00%+30New
Hughes Financial Services, LLC29$3.75K0.00%+13+81.3%Added
Tower View Investment Management & Research LLC29$3.64K0.00%00.0%Unchanged
Bangor Savings Bank28$3.52K0.00%00.0%Unchanged
Bellwether Advisors, LLC26$3.27K0.00%−2−7.1%Reduced
Bartlett & Co. Wealth Management LLC25$3.14K0.00%−1−3.8%Reduced
Consultiva Wealth Management, Corp.25$3.14K0.01%00.0%Unchanged