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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
Lavaca Capital LLC285$39.0K0.02%+257+917.9%Added
Itau Unibanco Holding S.A.276$38.0K0.00%00.0%Unchanged
Golden State Wealth Management, LLC265$36.3K0.01%00.0%Unchanged
NBC Securities, Inc.257$35.0K0.00%+257New
Twin Lakes Capital Management, LLC250$34.2K0.02%−261−51.1%Reduced
NBT Bank N A249$34.1K0.00%−441−63.9%Reduced
Capital Advisors, Ltd. LLC248$34.0K0.00%+38+18.1%Added
CVA Family Office, LLC231$31.6K0.00%+96+71.1%Added
Private Trust Co NA229$31.3K0.00%+98+74.8%Added
SRS Capital Advisors, Inc.215$29.4K0.00%00.0%Unchanged
Pflug Koory, LLC214$29.3K0.02%00.0%Unchanged
Zions Bancorporation, National Association211$28.9K0.00%+211New
Montag A & Associates Inc209$28.6K0.00%00.0%Unchanged
Bogart Wealth, LLC209$28.6K0.00%00.0%Unchanged
Central Trust Co203$27.8K0.00%+30+17.3%Added
Vision Financial Markets LLC200$27.4K0.03%+200New
Greykasell Wealth Strategies, Inc.198$27.1K0.01%+198New
Harbour Investments, Inc.195$26.7K0.00%−17−8.0%Reduced
Opal Wealth Advisors, LLC191$26.1K0.01%+191New
Spire Wealth Management171$23.5K0.00%+45+35.7%Added
Trust Co163$22.3K0.00%00.0%Unchanged
WealthCollab, LLC163$22.3K0.01%+68+71.6%Added
AllSquare Wealth Management LLC153$20.9K0.01%+120+363.6%Added
Principia Wealth Advisory, LLC170$20.5K0.02%+1+0.6%Added
Rise Advisors, LLC148$20.3K0.01%+22+17.5%Added
Ransom Advisory, Ltd140$19.2K0.01%00.0%Unchanged
Rothschild Investment LLC136$18.6K0.00%−63−31.7%Reduced
Bell Investment Advisors, Inc134$18.3K0.00%+84+168.0%Added
Asset Planning,Inc126$17.2K0.01%00.0%Unchanged
Sandy Spring Bank115$15.7K0.00%00.0%Unchanged
Medallion Wealth Advisors, LLC115$15.7K0.01%00.0%Unchanged
Catalyst Capital Advisors LLC114$15.6K0.00%00.0%Unchanged
Concord Wealth Partners114$15.6K0.00%00.0%Unchanged
Sittner & Nelson, LLC110$15.1K0.01%00.0%Unchanged
Private Wealth Management Group, LLC107$14.6K0.01%+20+23.0%Added
Brown Shipley& Co Ltd107$14.6K0.01%+85+386.4%Added
Graney & King, LLC106$14.5K0.01%+106New
Asset Dedication, LLC104$14.2K0.00%00.0%Unchanged
First Horizon Advisors, Inc.104$14.2K0.00%+4+4.0%Added
NewSquare Capital LLC104$14.2K0.00%+86+477.8%Added
Smithfield Trust Co100$14.0K0.00%−4−3.8%Reduced
Delta Asset Management LLC100$13.7K0.00%00.0%Unchanged
Broadwater Capital Management LLC100$13.7K0.01%00.0%Unchanged
GW&K Investment Management, LLC92$13.0K0.00%−20−17.9%Reduced
Assetmark, Inc95$13.0K0.00%−13−12.0%Reduced
CKW Financial Group100$13.0K0.00%00.0%Unchanged
Creative Capital Management Investments LLC92$12.6K0.00%00.0%Unchanged
VSM Wealth Advisory, LLC92$12.6K0.00%00.0%Unchanged
GHP Investment Advisors, Inc.87$11.9K0.00%+87New
Rakuten Securities, Inc.87$11.9K0.01%+24+38.1%Added
Hara Capital LLC84$11.5K0.01%00.0%Unchanged
Union Bancaire Privee, UBP SA82$11.3K0.00%00.0%Unchanged
Larson Financial Group LLC81$11.1K0.00%−82−50.3%Reduced
Tompkins Financial Corp81$11.1K0.00%00.0%Unchanged
Centerpoint Advisors, LLC83$11.0K0.00%00.0%Unchanged
Adirondack Trust Co80$10.9K0.00%00.0%Unchanged
Geneos Wealth Management Inc.79$10.8K0.00%−9−10.2%Reduced
Mountain Hill Investment Partners Corp.75$10.3K0.01%−75−50.0%Reduced
Independence Bank of Kentucky75$10.3K0.00%00.0%Unchanged
Cetera Trust Company, N.A75$10.3K0.01%00.0%Unchanged
Stephenson National Bank & Trust75$10.3K0.00%+39+108.3%Added
South State Corp.72$9.85K0.00%+72New
West Paces Advisors Inc.70$9.58K0.00%00.0%Unchanged
Smallwood Wealth Investment Management, LLC70$9.58K0.01%+70New
MV Capital Management, Inc.69$9.44K0.00%+6+9.5%Added
Truvestments Capital LLC68$9.30K0.00%−8−10.5%Reduced
Bruce G. Allen Investments, LLC67$9.17K0.01%+44+191.3%Added
Hemington Wealth Management70$9.00K0.00%−2−2.8%Reduced
Ogorek Anthony Joseph66$9.00K0.00%+66New
FNY Investment Advisers, LLC70$9.00K0.01%+70New
First Community Trust NA65$8.89K0.01%00.0%Unchanged
Future Financial Wealth Managment LLC65$8.89K0.01%00.0%Unchanged
Private Wealth Asset Management, LLC63$8.62K0.00%+63New
Kestra Investment Management, LLC62$8.48K0.00%−48−43.6%Reduced
Saudi Central Bank57$7.80K0.04%+57New
Tradewinds Capital Management, LLC50$6.84K0.00%00.0%Unchanged
Financial Freedom, LLC50$6.84K0.00%00.0%Unchanged
Millstone Evans Group, LLC50$6.84K0.00%00.0%Unchanged
Synergy Investment Management, LLC50$6.84K0.00%00.0%Unchanged
Marshall & Sterling Wealth Advisors Inc.48$6.57K0.00%+48New
West Oak Capital, LLC45$6.20K0.00%00.0%Unchanged
Wood Tarver Financial Group, LLC44$6.02K0.00%00.0%Unchanged
UMA Financial Services, Inc.44$6.02K0.00%+14+46.7%Added
McIlrath & Eck, LLC43$5.84K0.00%00.0%Unchanged
Cullen/Frost Bankers, Inc.40$5.47K0.00%−46−53.5%Reduced
Tortoise Investment Management, LLC40$5.47K0.00%00.0%Unchanged
Anchor Investment Management, LLC40$5.47K0.00%00.0%Unchanged
Bank Julius Baer & Co. Ltd, Zurich40$5.47K0.00%+4+11.1%Added
Anderson Financial Strategies, LLC40$5.47K0.00%+40New
Johnson Financial Group, Inc.39$5.34K0.00%00.0%Unchanged
Sierra Ocean, LLC39$5.34K0.00%+19+95.0%Added
Meeder Asset Management Inc38$5.20K0.00%−16−29.6%Reduced
E Fund Management (Hong Kong) Co., Ltd.40$5.00K0.00%+30+300.0%Added
Webster Bank, N. A.36$4.93K0.00%−39−52.0%Reduced
Prestige Wealth Management Group LLC35$4.79K0.00%00.0%Unchanged
High Note Wealth, LLC35$4.79K0.00%−22−38.6%Reduced
Rosenberg Matthew Hamilton35$4.79K0.00%00.0%Unchanged
Caldwell Sutter Capital, Inc.34$4.65K0.00%00.0%Unchanged
Dynamic Wealth Strategies, LLC33$4.52K0.00%+33New
DiNuzzo Private Wealth, Inc.32$4.38K0.00%−5−13.5%Reduced