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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 2026

Institutional positions in Biogen Inc. as of Jun 30, 2026. 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
1,046
+42 vs. Q1 2026
Shares held
142.3M
+7.45M (+5.5%) vs. Q1 2026
Total value
$30.7B
+$6.00B (+24.3%) vs. Q1 2026
New holders
126
427 more added
Sold out
84
296 more reduced

11 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2026: 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 2026: 1,046 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 2026: $30.7B
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 20261,046$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 2026

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q1 2026.

Institutions holding BIIB in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Evolution Advisers, Inc.1$00.00%+1New
Navigoe, LLC4$00.00%+4New
Creative Financial Designs Inc1$2160.00%−68−98.6%Reduced
Triumph Capital Management1$2160.00%00.0%Unchanged
Nemes Rush Group LLC1$2160.00%00.0%Unchanged
ROSS\JOHNSON & Associates LLC1$2160.00%00.0%Unchanged
Game Plan Financial Advisors, LLC1$2160.00%+1New
Compass Financial Management LLC1$2160.00%+1New
NorthAvenue LLC1$2170.00%00.0%Unchanged
Maryland Capital Advisors Inc.1$2170.00%+1New
Cordant, Inc.2$3270.00%+2New
Dogwood Wealth Management LLC2$4320.00%00.0%Unchanged
Horizon Financial Services, LLC2$4320.00%+2New
Morton Brown Family Wealth, LLC2$4320.00%+2New
Seneschal Advisors, LLC2$4330.00%00.0%Unchanged
3 Factor Indexing, LLC2$4330.00%00.0%Unchanged
Halbert Hargrove Global Advisors, LLC2$4910.00%+2New
Colonial Trust Co3$6480.00%00.0%Unchanged
Fairman Group, LLC3$6480.00%00.0%Unchanged
Addison Advisors LLC3$6490.00%−151−98.1%Reduced
Phillip James Consulting Co.4$8640.00%00.0%Unchanged
Davis Capital Management4$8640.00%+2+100.0%Added
Motco4$8640.00%+4New
Decker Retirement Planning Inc.4$8640.00%+4New
Chilton Capital Management LLC4$8650.00%00.0%Unchanged
TFC Financial Management4$8650.00%00.0%Unchanged
Breakwater Investment Management4$8650.00%00.0%Unchanged
RMG Wealth Management LLC5$1.04K0.00%00.0%Unchanged
Spectrum Wealth Advisory Group, LLC5$1.08K0.00%+5New
Atwood & Palmer Inc5$1.08K0.00%−7−58.3%Reduced
Evermay Wealth Management LLC5$1.08K0.00%00.0%Unchanged
Wolff Wiese Magana LLC5$1.08K0.00%00.0%Unchanged
Three Bearings Fiduciary Advisors, Inc.5$1.08K0.00%00.0%Unchanged
JPL Wealth Management, LLC5$1.08K0.00%+2+66.7%Added
DecisionPoint Financial, LLC6$1.26K0.00%+3+100.0%Added
AdvisorNet Financial, Inc6$1.30K0.00%−8−57.1%Reduced
Albion Financial Group6$1.30K0.00%00.0%Unchanged
Quaker Wealth Management, LLC6$1.30K0.00%00.0%Unchanged
Dunhill Financial, LLC6$1.43K0.00%−1−14.3%Reduced
Cape Investment Advisory, Inc.7$1.51K0.00%+7New
Quarry LP7$1.51K0.00%+7New
Barnes Dennig Private Wealth Management LLC7$1.51K0.00%+7New
Clark Wealth Partners7$1.51K0.00%00.0%Unchanged
Valley National Advisers Inc9$1.95K0.00%00.0%Unchanged
Strengthening Families & Communities, LLC9$1.95K0.00%+9New
Penserra Capital Management LLC12$2.00K0.00%00.0%Unchanged
Thurston, Springer, Miller, Herd & Titak, Inc.10$2.16K0.00%00.0%Unchanged
Toth Financial Advisory Corp10$2.16K0.00%00.0%Unchanged
Indiana Trust & Investment Management CO10$2.16K0.00%00.0%Unchanged
1 North Wealth Services LLC10$2.16K0.00%00.0%Unchanged
HFM Investment Advisors, LLC10$2.16K0.00%+5+100.0%Added
Buck Wealth Strategies, LLC10$2.16K0.00%+10New
Bernard Wealth Management Corp.11$2.38K0.00%00.0%Unchanged
1015 Capital Partners, LLC11$2.38K0.00%+1+10.0%Added
Hollencrest Capital Management13$2.81K0.00%00.0%Unchanged
WestEnd Advisors, LLC13$2.81K0.00%+1+8.3%Added
Godfrey Financial Associates, Inc.14$3.02K0.00%00.0%Unchanged
Caitong International Asset Management Co., Ltd14$3.02K0.00%+14New
Rakuten Securities, Inc.15$3.24K0.00%−7−31.8%Reduced
Fortis Group Advisors, LLC15$3.24K0.00%00.0%Unchanged
PlanVest Financial, Inc15$3.24K0.00%00.0%Unchanged
MJT & Associates Financial Advisory Group, Inc.15$3.24K0.00%+15New
American Capital Advisory, LLC15$3.25K0.00%+4+36.4%Added
Abound Wealth Management15$3.28K0.00%−11−42.3%Reduced
Medallion Wealth Advisors, LLC16$3.46K0.00%−57−78.1%Reduced
Pinnacle Bancorp, Inc.16$3.46K0.00%−11−40.7%Reduced
NVWM, LLC16$3.46K0.00%00.0%Unchanged
Darwin Advisors, LLC17$3.72K0.00%+1+6.3%Added
Harbor Investment Advisory, LLC18$3.89K0.00%00.0%Unchanged
Financial Management Professionals, Inc.18$3.89K0.00%+2+12.5%Added
West Paces Advisors Inc.18$3.89K0.00%+18New
DiNuzzo Private Wealth, Inc.18$3.89K0.00%+1+5.9%Added
Burk Holdings LLC19$4.11K0.00%00.0%Unchanged
Plante Moran Financial Advisors, LLC19$4.11K0.00%+2+11.8%Added
First United Bank Trust20$4.32K0.00%00.0%Unchanged
Colonial Trust Advisors20$4.32K0.00%00.0%Unchanged
Bank of New Hampshire20$4.32K0.00%00.0%Unchanged
Vision Retirement, LLC20$4.32K0.00%00.0%Unchanged
Creative Capital Management Investments LLC20$4.32K0.00%+20New
Kayne Anderson Rudnick Investment Management LLC20$4.38K0.00%+20Added
BOK Financial Private Wealth, Inc.21$4.54K0.00%+21New
Bare Financial Services, Inc22$4.75K0.00%+3+15.8%Added
Nvest Wealth Strategies, Inc.22$4.75K0.00%00.0%Unchanged
MidFirst Bank23$4.97K0.00%00.0%Unchanged
Financial Consulate, Inc23$4.97K0.00%+12+109.1%Added
Roble, Belko & Company, Inc25$5.00K0.00%00.0%Unchanged
IMA Wealth, Inc.24$5.18K0.00%+15+166.7%Added
Geneos Wealth Management Inc.24$5.18K0.00%+19+380.0%Added
Joseph Group Capital Management25$5.40K0.00%−11−30.6%Reduced
Consultiva Wealth Management, Corp.25$5.40K0.01%00.0%Unchanged
Cedar Mountain Advisors, LLC27$5.83K0.00%00.0%Unchanged
Bay Harbor Wealth Management, LLC27$5.83K0.00%+6+28.6%Added
Bangor Savings Bank28$6.05K0.00%00.0%Unchanged
Align Financial, LLC28$6.05K0.00%00.0%Unchanged
Tower View Investment Management & Research LLC29$6.27K0.00%00.0%Unchanged
Caldwell Sutter Capital, Inc.30$6.48K0.00%00.0%Unchanged
St Germain D J Co Inc30$6.48K0.00%00.0%Unchanged
Barrett & Company, Inc.30$6.48K0.00%00.0%Unchanged
Marquette Asset Management, LLC30$6.48K0.00%00.0%Unchanged
Asset Dedication, LLC32$6.91K0.00%−26−44.8%Reduced