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Livermore
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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 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
1,047
+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
297 more reduced

10 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: 1,047 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 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 20261,047$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 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
Asset Planning,Inc84$18.1K0.01%00.0%Unchanged
Centerpoint Advisors, LLC83$18.0K0.01%00.0%Unchanged
Cornerstone Financial Management LLC82$17.7K0.01%+34+70.8%Added
Steigerwald, Gordon & Koch Inc.81$17.5K0.00%00.0%Unchanged
Adirondack Trust Co80$17.3K0.01%00.0%Unchanged
Cetera Trust Company, N.A75$16.2K0.01%00.0%Unchanged
Adkins Seale Capital Management LLC75$16.2K0.01%00.0%Unchanged
JFS Wealth Advisors, LLC74$16.0K0.00%+6+8.8%Added
United Financial Planning Group LLC74$16.0K0.01%00.0%Unchanged
Private Wealth Management Group, LLC72$15.6K0.00%+20+38.5%Added
Bartlett & Co. Wealth Management LLC71$15.3K0.00%+24+51.1%Added
Smallwood Wealth Investment Management, LLC70$15.1K0.01%00.0%Unchanged
J.Safra Asset Management Corp67$14.5K0.00%−15−18.3%Reduced
First Community Trust NA65$14.0K0.01%00.0%Unchanged
Allied Private Wealth LLC68$13.6K0.01%+68New
Kemnay Advisory Services Inc.62$13.4K0.00%+3+5.1%Added
Spire Wealth Management61$13.2K0.00%−35−36.5%Reduced
Private Wealth Asset Management, LLC61$13.2K0.00%00.0%Unchanged
Raffa Wealth Management, LLC57$12.3K0.00%+4+7.5%Added
Westfuller Advisors, LLC56$12.1K0.00%−4−6.7%Reduced
Salomon & Ludwin, LLC57$12.0K0.00%00.0%Unchanged
Wedbush Fund Advisers, LLC54$11.7K0.00%+54New
Synergy Investment Management, LLC52$11.2K0.00%+1+2.0%Added
Kilter Group LLC50$10.8K0.00%−2−3.8%Reduced
Tradewinds Capital Management, LLC50$10.8K0.00%00.0%Unchanged
Atlantic Trust, LLC50$10.8K0.00%00.0%Unchanged
Millstone Evans Group, LLC50$10.8K0.01%00.0%Unchanged
Silver Grove Financial Group, Inc.49$10.6K0.01%+49New
NBC Securities, Inc.49$10.6K0.00%00.0%Unchanged
Anchor Investment Management, LLC47$10.2K0.00%+7+17.5%Added
Signature Equity Partners, LLC45$9.72K0.00%+9+25.0%Added
LifeSteps Financial, Inc.43$9.29K0.00%+43New
DT Investment Partners, LLC42$9.07K0.00%00.0%Unchanged
South State Corp.42$9.07K0.00%+19+82.6%Added
Prosperity Bancshares Inc40$8.64K0.01%+4+11.1%Added
Park Place Capital Corp40$8.64K0.00%+7+21.2%Added
Ancora Advisors, LLC39$8.43K0.00%−185−82.6%Reduced
Crewe Advisors LLC37$8.00K0.00%+9+32.1%Added
Meeder Asset Management Inc36$7.78K0.00%−1,035−96.6%Reduced
Activest Wealth Management36$7.78K0.00%+21+140.0%Added
GHP Investment Advisors, Inc.35$7.56K0.00%00.0%Unchanged
Rosenberg Matthew Hamilton35$7.56K0.00%00.0%Unchanged
Hughes Financial Services, LLC35$7.56K0.00%+8+29.6%Added
Clear Street Markets LLC34$7.35K0.00%+10+41.7%Added
Rialto Wealth Management, LLC33$7.13K0.00%+15+83.3%Added
Asset Dedication, LLC32$6.91K0.00%−26−44.8%Reduced
Ameriflex Group, Inc.32$6.91K0.00%+14+77.8%Added
Planning Strategies Inc.32$6.91K0.00%+32New
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
Tower View Investment Management & Research LLC29$6.27K0.00%00.0%Unchanged
Bangor Savings Bank28$6.05K0.00%00.0%Unchanged
Align Financial, LLC28$6.05K0.00%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
Joseph Group Capital Management25$5.40K0.00%−11−30.6%Reduced
Consultiva Wealth Management, Corp.25$5.40K0.01%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
Roble, Belko & Company, Inc25$5.00K0.00%00.0%Unchanged
Financial Consulate, Inc23$4.97K0.00%+12+109.1%Added
MidFirst Bank23$4.97K0.00%00.0%Unchanged
Nvest Wealth Strategies, Inc.22$4.75K0.00%00.0%Unchanged
Bare Financial Services, Inc22$4.75K0.00%+3+15.8%Added
BOK Financial Private Wealth, Inc.21$4.54K0.00%+21New
Kayne Anderson Rudnick Investment Management LLC20$4.38K0.00%+20Added
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
Burk Holdings LLC19$4.11K0.00%00.0%Unchanged
Plante Moran Financial Advisors, LLC19$4.11K0.00%+2+11.8%Added
DiNuzzo Private Wealth, Inc.18$3.89K0.00%+1+5.9%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
Darwin Advisors, LLC17$3.72K0.00%+1+6.3%Added
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
Abound Wealth Management15$3.28K0.00%−11−42.3%Reduced
American Capital Advisory, LLC15$3.25K0.00%+4+36.4%Added
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
Godfrey Financial Associates, Inc.14$3.02K0.00%00.0%Unchanged
Caitong International Asset Management Co., Ltd14$3.02K0.00%+14New
Hollencrest Capital Management13$2.81K0.00%00.0%Unchanged
WestEnd Advisors, LLC13$2.81K0.00%+1+8.3%Added
Bernard Wealth Management Corp.11$2.38K0.00%00.0%Unchanged
1015 Capital Partners, LLC11$2.38K0.00%+1+10.0%Added
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