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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; 1,046 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: 1,046 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 20261,046$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
Quest 10 Wealth Builders, Inc.1$980.00%00.0%Unchanged
Bay Harbor Wealth Management, LLC1$1250.00%+1New
Valued Wealth Advisors LLC1$1260.00%00.0%Unchanged
ROSS\JOHNSON & Associates LLC1$1260.00%00.0%Unchanged
Creative Financial Designs Inc1$1260.00%+1New
TFC Financial Management1$1260.00%+1New
Curio Wealth, LLC2$2510.00%+1+100.0%Added
HFM Investment Advisors, LLC2$2510.00%+1+100.0%Added
Ancora Advisors, LLC2$2510.00%+2New
DiNuzzo Private Wealth, Inc.2$2520.00%−30−93.8%Reduced
Colonial Trust Co3$3770.00%−2−40.0%Reduced
WPG Advisers, LLC3$3770.00%00.0%Unchanged
DecisionPoint Financial, LLC3$3910.00%+3New
Riggs Asset Managment Co. Inc.4$5030.00%+4New
Stephens Consulting, LLC4$5030.00%+4New
Dunhill Financial, LLC4$6270.00%−6−60.0%Reduced
Wolff Wiese Magana LLC5$6280.00%−11−68.8%Reduced
Atwood & Palmer Inc5$6280.00%00.0%Unchanged
Evermay Wealth Management LLC5$6280.00%00.0%Unchanged
JFS Wealth Advisors, LLC5$6280.00%+2+66.7%Added
Rialto Wealth Management, LLC6$7540.00%−10−62.5%Reduced
Fairman Group, LLC6$7540.00%00.0%Unchanged
Albion Financial Group6$7540.00%00.0%Unchanged
WestEnd Advisors, LLC6$7540.00%00.0%Unchanged
LRI Investments, LLC6$7540.00%00.0%Unchanged
Quaker Wealth Management, LLC6$7540.00%+6New
Parkworth Wealth Management, Inc.6$7540.00%+6New
Clark Wealth Partners7$8790.00%+7New
WealthTrak Capital Management LLC7$8800.00%−1−12.5%Reduced
Penserra Capital Management LLC12$1.00K0.00%00.0%Unchanged
Hazlett, Burt & Watson, Inc.10$1.00K0.00%+10New
Sierra Ocean, LLC8$1.00K0.00%−31−79.5%Reduced
Evolution Wealth Management Inc.8$1.00K0.00%+8New
American Capital Advisory, LLC8$1.01K0.00%+6+300.0%Added
AdvisorNet Financial, Inc9$1.13K0.00%−6−40.0%Reduced
Wealth Preservation Advisors, LLC9$1.13K0.00%00.0%Unchanged
Cape Investment Advisory, Inc.9$1.13K0.00%+2+28.6%Added
Kayne Anderson Rudnick Investment Management LLC9$1.13K0.00%+9New
IMG Wealth Management, Inc.9$1.13K0.00%+9New
1 North Wealth Services LLC10$1.26K0.00%00.0%Unchanged
Strategic Investment Solutions, Inc.10$1.26K0.00%00.0%Unchanged
Bernard Wealth Management Corp.11$1.38K0.00%00.0%Unchanged
Park Place Capital Corp11$1.43K0.00%00.0%Unchanged
Hollencrest Capital Management13$1.63K0.00%00.0%Unchanged
New England Capital Financial Advisors LLC13$1.63K0.00%00.0%Unchanged
Stone House Investment Management, LLC14$1.76K0.00%−15−51.7%Reduced
NVWM, LLC14$1.76K0.00%+1+7.7%Added
Accredited Wealth Management, LLC15$1.88K0.00%00.0%Unchanged
Fortis Group Advisors, LLC15$1.88K0.00%00.0%Unchanged
Darwin Advisors, LLC16$2.01K0.00%00.0%Unchanged
Winch Advisory Services, LLC16$2.01K0.00%00.0%Unchanged
Financial Management Professionals, Inc.16$2.01K0.00%+16New
GFG Capital, LLC16$2.01K0.00%+16New
Plante Moran Financial Advisors, LLC17$2.13K0.00%00.0%Unchanged
Ameriflex Group, Inc.18$2.29K0.00%00.0%Unchanged
First United Bank Trust20$2.51K0.00%00.0%Unchanged
Indiana Trust & Investment Management CO20$2.51K0.00%00.0%Unchanged
Compagnie Lombard Odier SCmA20$2.51K0.00%00.0%Unchanged
Chilton Capital Management LLC20$2.51K0.00%+20New
Colonial Trust Advisors20$2.51K0.00%+20New
Fortitude Family Office, LLC20$2.51K0.00%+20New
Kilter Group LLC20$2.51K0.00%+20New
Raffa Wealth Management, LLC21$2.64K0.00%00.0%Unchanged
Abound Wealth Management22$2.76K0.00%+4+22.2%Added
CBIZ Investment Advisory Services, LLC23$2.89K0.00%+16+228.6%Added
ORG Partners LLC23$2.99K0.00%+23New
Roble, Belko & Company, Inc25$3.00K0.00%00.0%Unchanged
Bartlett & Co. Wealth Management LLC25$3.14K0.00%−1−3.8%Reduced
Consultiva Wealth Management, Corp.25$3.14K0.01%00.0%Unchanged
Bellwether Advisors, LLC26$3.27K0.00%−2−7.1%Reduced
Bangor Savings Bank28$3.52K0.00%00.0%Unchanged
Tower View Investment Management & Research LLC29$3.64K0.00%00.0%Unchanged
Hughes Financial Services, LLC29$3.75K0.00%+13+81.3%Added
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
Howard Hughes Medical Institute31$3.89K0.00%+31New
Whipplewood Advisors, LLC32$4.02K0.00%+4+14.3%Added
Pinnacle Bancorp, Inc.32$4.02K0.00%+9+39.1%Added
Caldwell Sutter Capital, Inc.34$4.27K0.00%00.0%Unchanged
High Note Wealth, LLC35$4.40K0.00%00.0%Unchanged
Rosenberg Matthew Hamilton35$4.40K0.00%00.0%Unchanged
Webster Bank, N. A.36$4.52K0.00%00.0%Unchanged
Prestige Wealth Management Group LLC38$4.77K0.00%+3+8.6%Added
Johnson Financial Group, Inc.39$4.90K0.00%00.0%Unchanged
Hemington Wealth Management45$5.00K0.00%−25−35.7%Reduced
Wood Tarver Financial Group, LLC44$5.00K0.00%00.0%Unchanged
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
Bank Julius Baer & Co. Ltd, Zurich40$5.03K0.00%00.0%Unchanged
UMA Financial Services, Inc.42$5.28K0.00%−2−4.5%Reduced
McIlrath & Eck, LLC43$5.36K0.00%00.0%Unchanged
Activest Wealth Management43$5.40K0.00%+43New
West Oak Capital, LLC45$5.70K0.00%00.0%Unchanged
Private Wealth Management Group, LLC47$5.90K0.00%−60−56.1%Reduced
Marshall & Sterling Wealth Advisors Inc.49$6.15K0.00%+1+2.1%Added
Tortoise Investment Management, LLC49$6.15K0.00%+9+22.5%Added
Tradewinds Capital Management, LLC50$6.28K0.00%00.0%Unchanged
Financial Freedom, LLC50$6.28K0.00%00.0%Unchanged