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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
Affinity Investment Advisors, LLC1,663$359.3K0.18%+1,663New
Plancorp, LLC1,726$360.8K0.01%−28−1.6%Reduced
Advisory Services Network, LLC1,672$361.4K0.00%+60+3.7%Added
Optas, LLC1,685$364.1K0.05%+29+1.8%Added
Prospera Financial Services Inc1,692$365.6K0.01%+82+5.1%Added
Alps Advisors Inc1,692$365.6K0.00%+1,692New
Peapack Gladstone Financial Corp1,699$367.0K0.00%+8+0.5%Added
Philip James Wealth Mangement, LLC1,702$367.7K0.04%−621−26.7%Reduced
CX Institutional1,701$368.0K0.01%−24−1.4%Reduced
EntryPoint Capital, LLC1,716$370.8K0.09%+1,716New
Hancock Whitney Corp1,726$372.9K0.01%−9−0.5%Reduced
TCG Advisory Services, LLC1,735$374.9K0.01%+50+3.0%Added
Abacus Planning Group, Inc.1,738$375.5K0.05%−22−1.3%Reduced
Envestnet Portfolio Solutions, Inc.1,738$375.5K0.00%+296+20.5%Added
Riversedge Advisors, LLC1,746$377.2K0.05%+217+14.2%Added
Perigon Wealth Management, LLC1,761$380.5K0.01%+161+10.1%Added
Ostrum Asset Management1,767$381.8K0.02%00.0%Unchanged
Exchange Traded Concepts, LLC1,770$382.4K0.00%−53−2.9%Reduced
Kera Capital Partners, Inc.1,772$382.9K0.04%+49+2.8%Added
Waterfront Wealth Inc.1,943$386.9K0.06%−804−29.3%Reduced
S-Bank Fund Management Ltd1,792$387.2K0.05%+1,792New
Trail Ridge Investment Advisors, LLC1,807$390.4K0.16%00.0%Unchanged
Jackson Thornton Asset Management, LLC1,829$395.2K0.03%+1,829New
Rock Point Advisors, LLC1,840$397.6K0.10%00.0%Unchanged
Oslo Pensjonsforsikring AS1,840$397.6K0.05%00.0%Unchanged
Everhart Financial Group, Inc.1,840$397.6K0.03%+2+0.1%Added
Westpac Banking Corp1,843$398.2K0.02%00.0%Unchanged
Sectoral Asset Management Inc1,850$399.7K0.28%00.0%Unchanged
Flputnam Investment Management Co1,861$402.1K0.00%00.0%Unchanged
Resonant Capital Advisors, LLC1,862$402.3K0.02%−12−0.6%Reduced
Forbes J M & Co LLP1,869$403.8K0.03%00.0%Unchanged
Colonial River Wealth Management, LLC1,871$404.2K0.11%+41+2.2%Added
SummitTX Capital, L.P.1,872$404.5K0.01%−19,784−91.4%Reduced
Forum Financial Management, LP1,890$408.4K0.01%00.0%Unchanged
Stratos Wealth Partners, LTD.1,899$410.5K0.00%−13−0.7%Reduced
PKO Investment Management Joint-Stock Co1,900$410.5K0.03%+600+46.2%Added
Camelot Portfolios, LLC1,900$410.5K0.29%00.0%Unchanged
Parkside Financial Bank & Trust1,900$410.5K0.03%+45+2.4%Added
Sagespring Wealth Partners, LLC1,937$418.6K0.01%+24+1.3%Added
DoubleLine ETF Adviser LP1,947$420.7K0.17%−178−8.4%Reduced
Cidel Asset Management Inc1,952$421.8K0.02%−177−8.3%Reduced
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main1,966$423.0K0.00%−20,960−91.4%Reduced
Jackson Creek Investment Advisors LLC2,127$432.0K0.14%−3,535−62.4%Reduced
Estabrook Capital Management2,000$432.1K0.06%00.0%Unchanged
Procyon Private Wealth Partners, LLC2,005$433.2K0.02%−58−2.8%Reduced
Heritage Wealth Advisors2,009$434.1K0.01%00.0%Unchanged
AlphaCore Capital LLC2,010$434.3K0.01%+678+50.9%Added
Groupama Asset Managment2,017$435.8K0.01%−6,736−77.0%Reduced
EP Wealth Advisors, LLC2,024$437.3K0.00%+323+19.0%Added
Evolve Private Wealth, LLC2,032$439.1K0.03%−1,504−42.5%Reduced
QTR Family Wealth, LLC2,041$441.0K0.15%+51+2.6%Added
Capital Investment Advisors, LLC2,045$441.8K0.01%−42−2.0%Reduced
Blackstone Group Inc.2,060$445.1K0.00%+2,060New
Ramiah Investment Group2,085$450.5K0.34%+2,085New
National Asset Management, Inc.2,094$453.6K0.02%+30+1.5%Added
Evercore Wealth Management, LLC2,112$456.3K0.01%00.0%Unchanged
Smartleaf Asset Management LLC2,125$460.4K0.01%00.0%Unchanged
Navellier & Associates Inc2,164$467.6K0.04%00.0%Unchanged
Tompkins Financial Corp2,200$475.3K0.03%+2,200New
Axxion S.A.2,200$475.3K0.03%+2,200New
Oppenheimer Asset Management Inc.2,207$476.8K0.00%+3+0.1%Added
Apollon Wealth Management, LLC2,210$477.5K0.01%+768+53.3%Added
Simplicity Wealth,LLC2,259$488.1K0.02%+110+5.1%Added
Richwood Investment Advisors, LLC2,267$489.7K0.34%+235+11.6%Added
Concurrent Investment Advisors, LLC2,272$490.9K0.00%+50+2.3%Added
Parallax Volatility Advisers, L.P.2,291$495.0K0.02%+602+35.6%Added
Fayez Sarofim & Co2,300$496.9K0.00%00.0%Unchanged
Transcend Wealth Collective, LLC2,363$510.6K0.03%+533+29.1%Added
Mission Wealth Management, LP2,387$515.8K0.01%+766+47.3%Added
Personal Cfo Solutions, LLC2,416$522.0K0.08%+54+2.3%Added
TFB Advisors LLC2,424$523.7K0.23%+10.0%Added
Hantz Financial Services, Inc.2,424$524.0K0.01%+267+12.4%Added
Prime Capital Investment Advisors, LLC2,427$524.5K0.01%−603−19.9%Reduced
TCW Group Inc2,461$531.7K0.00%+123+5.3%Added
BSW Wealth Partners2,462$531.9K0.06%+388+18.7%Added
Ocean Capital Management, LLC2,475$534.7K0.10%−65−2.6%Reduced
9823 Capital, L.P.2,494$538.9K0.36%+2,494New
DKRT Investments Corp.2,500$540.1K0.13%00.0%Unchanged
Private Advisor Group, LLC2,510$542.3K0.00%−2,139−46.0%Reduced
TD Private Client Wealth LLC2,512$542.7K0.01%+603+31.6%Added
Assetmark, Inc2,535$547.8K0.00%−155−5.8%Reduced
Nwam LLC2,553$551.6K0.03%+1,412+123.8%Added
Advus Financial Partners, LLC2,566$554.4K0.13%−56−2.1%Reduced
Eagle Global Advisors LLC2,609$563.6K0.02%+9+0.3%Added
Parcion Private Wealth LLC2,609$563.7K0.03%+469+21.9%Added
RSM US Wealth Management LLC2,633$568.9K0.01%+253+10.6%Added
Westside Investment Management, Inc.2,634$569.1K0.07%−3−0.1%Reduced
Oppenheimer & Co Inc2,666$576.0K0.01%−54−2.0%Reduced
Northwest & Ethical Investments L.P.2,693$582.2K0.01%+693+34.7%Added
Proficio Capital Partners LLC2,701$583.6K0.02%+2,701New
Crestwood Advisors Group LLC2,725$588.7K0.01%+244+9.8%Added
Horizon Kinetics Asset Management LLC2,726$589.0K0.01%−131−4.6%Reduced
Klingenstein Fields & Co LP2,731$590.1K0.02%00.0%Unchanged
Rothschild Investment LLC2,739$591.7K0.02%+1,830+201.3%Added
Uncommon Cents Investing LLC2,769$598.3K0.13%−10−0.4%Reduced
Tema ETFs LLC2,772$598.9K0.02%+145+5.5%Added
Wedmont Private Capital3,012$599.8K0.02%+104+3.6%Added
Westwood Holdings Group Inc.2,782$601.1K0.00%+2,782New
Azzad Asset Management Inc2,784$601.5K0.05%+2,784New
Premier Path Wealth Partners, LLC2,786$601.9K0.07%−737−20.9%Reduced