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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 2023

Institutional positions in Biogen Inc. as of Jun 30, 2023. 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
1,009
+11 vs. Q1 2023
Shares held
126.8M
−1.09M (−0.9%) vs. Q1 2023
Total value
$36.1B
+$1.11B (+3.2%) vs. Q1 2023
New holders
96
322 more added
Sold out
85
363 more reduced

6 institutions that held it in Q1 2023 haven't filed for Q2 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2023: 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 2023: 1,009 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 2023: $36.1B
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 2023

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q1 2023.

Institutions holding BIIB in Q2 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Calamos Advisors LLC40,318$11.5M0.06%00.0%Unchanged
Affinity Asset Advisors, LLC40,000$11.4M4.48%+40,000New
Boston Common Asset Management, LLC39,890$11.4M0.24%−116−0.3%Reduced
State of Michigan Retirement System39,803$11.3M0.07%−2,658−6.3%Reduced
Banque Pictet & Cie SA39,376$11.2M0.10%−6,058−13.3%Reduced
Susquehanna International Group, LLP38,781$11.0M0.02%−51,337−57.0%Reduced
State of Tennessee, Treasury Department37,757$10.8M0.05%−5,391−12.5%Reduced
Teacher Retirement System of Texas37,618$10.7M0.07%+3,923+11.6%Added
Andra AP-fonden37,200$10.6M0.27%−23,100−38.3%Reduced
Amalgamated Bank36,760$10.5M0.08%−934−2.5%Reduced
MetLife Investment Management36,725$10.5M0.08%−423−1.1%Reduced
CIBC Asset Management Inc36,527$10.4M0.04%−198−0.5%Reduced
Centre Asset Management, LLC34,686$9.88M2.18%+945+2.8%Added
New York Life Investment Management LLC33,290$9.48M0.10%−311−0.9%Reduced
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main33,206$9.46M0.01%+9,080+37.6%Added
Natixis31,937$9.10M0.08%+15,668+96.3%Added
Weiss Multi-Strategy Advisers LLC31,777$9.05M0.19%−11,355−26.3%Reduced
IFM Investors Pty Ltd31,413$8.95M0.12%−431−1.4%Reduced
NorthCrest Asset Manangement, LLC31,391$8.94M0.35%−155−0.5%Reduced
Gotham Asset Management, LLC31,148$8.87M0.19%+11,274+56.7%Added
Janney Montgomery Scott LLC30,549$8.70M0.03%+11,871+63.6%Added
Texas Permanent School Fund30,076$8.57M0.08%+54+0.2%Added
Bridgeway Capital Management, LLC29,950$8.53M0.20%−5,000−14.3%Reduced
Beacon Investment Advisory Services, Inc.29,709$8.46M0.39%−645−2.1%Reduced
Twin Tree Management, LP29,552$8.42M0.17%+9,913+50.5%Added
Hillman Capital Management, Inc.29,411$8.38M2.96%−125−0.4%Reduced
CIBC World Markets Corp29,078$8.28M0.07%+20,062+222.5%Added
CSM Advisors, LLC28,816$8.20M0.62%−743−2.5%Reduced
USS Investment Management Ltd28,500$8.12M0.10%00.0%Unchanged
ICICI Prudential Asset Management Co Ltd28,472$8.11M1.03%−2,891−9.2%Reduced
Edmond de Rothschild Holding S.A.28,325$8.07M0.16%+93+0.3%Added
Natixis Advisors, L.P.28,321$8.07M0.02%+1,791+6.8%Added
Meitav Dash Investments Ltd28,250$7.98M0.06%+14,125+100.0%Added
The PNC Financial Services Group, Inc.27,537$7.84M0.01%−704−2.5%Reduced
Bokf, NA27,378$7.80M0.16%+5,424+24.7%Added
Cardinal Capital Management27,269$7.77M1.56%+140+0.5%Added
Silverarc Capital Management, LLC26,854$7.65M2.58%+15,543+137.4%Added
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund26,621$7.58M0.09%−700−2.6%Reduced
Forsta Ap-Fonden26,400$7.52M0.08%−1,200−4.3%Reduced
Brookfield Asset Management Inc.26,305$7.49M0.03%−7,022−21.1%Reduced
Bellevue Group AG25,598$7.29M0.10%+894+3.6%Added
Greenwood Capital Associates LLC25,362$7.22M1.01%−2,841−10.1%Reduced
Commonwealth of Pennsylvania Public School Empls Retrmt Sys25,243$7.19M0.06%+831+3.4%Added
Two Sigma Investments, LP25,166$7.17M0.02%+25,166New
Mutual of America Capital Management LLC25,109$7.15M0.08%+3,624+16.9%Added
Yousif Capital Management, LLC25,062$7.14M0.09%+353+1.4%Added
Advisor Group Holdings, Inc.24,988$7.11M0.01%−881−3.4%Reduced
Oregon Public Employees Retirement Fund24,804$7.07M0.08%−21,926−46.9%Reduced
Utah Retirement Systems24,766$7.05M0.10%−800−3.1%Reduced
Dai-Ichi Life Insurance Company, Ltd24,181$6.89M0.14%+10,095+71.7%Added
Platinum Investment Management Ltd24,044$6.85M0.24%+3,533+17.2%Added
Achmea Investment Management B.V.23,863$6.80M0.14%+2,473+11.6%Added
Sphera Funds Management Ltd.23,846$6.79M1.46%−9,670−28.9%Reduced
Public Employees Retirement Association of Colorado23,725$6.76M0.03%−192−0.8%Reduced
PFS Investments Inc.23,563$6.71M0.11%−174−0.7%Reduced
US Bancorp23,384$6.66M0.01%−893−3.7%Reduced
Commonwealth Equity Services, LLC22,983$6.55M0.01%−726−3.1%Reduced
CI Private Wealth, LLC22,117$6.30M0.01%+265+1.2%Added
Auxier Asset Management21,785$6.21M1.03%−510−2.3%Reduced
Crossmark Global Holdings, Inc.23,047$6.11M0.13%−835−3.5%Reduced
Swiss Life Asset Management Ltd21,197$6.04M0.09%−18,526−46.6%Reduced
Tobam20,468$5.83M0.44%−36,364−64.0%Reduced
Janus Henderson Group PLC20,081$5.72M0.00%−1,165−5.5%Reduced
American Assets Investment Management, LLC20,000$5.70M0.63%00.0%Unchanged
Mariner, LLC19,943$5.68M0.02%+1,921+10.7%Added
Xponance, Inc.19,847$5.65M0.08%+67+0.3%Added
Zimmer Partners, LP19,600$5.58M0.14%+19,600New
Exchange Capital Management, Inc.19,568$5.57M1.04%−124−0.6%Reduced
Mercer Global Advisors Inc19,272$5.49M0.02%−12,048−38.5%Reduced
Fort Washington Investment Advisors Inc18,692$5.32M0.04%−200−1.1%Reduced
Daiwa Securities Group Inc.18,637$5.31M0.04%+508+2.8%Added
Picton Mahoney Asset Management18,202$5.19M0.25%+959+5.6%Added
SG Americas Securities, LLC18,055$5.14M0.04%+4,570+33.9%Added
First Citizens Bank & Trust Co18,008$5.13M0.09%+3,825+27.0%Added
Cornerstone Advisors, LLC18,000$5.13M0.24%00.0%Unchanged
Louisiana State Employees Retirement System18,000$5.13M0.11%+1,400+8.4%Added
Ilmarinen Mutual Pension Insurance Co18,000$5.13M0.07%00.0%Unchanged
Federation des caisses Desjardins du Quebec17,865$5.09M0.05%+6,121+52.1%Added
HighTower Advisors, LLC17,554$4.98M0.01%−30−0.2%Reduced
M&T Bank Corp17,223$4.91M0.02%+55+0.3%Added
Shelton Capital Management17,163$4.89M0.18%−2,270−11.7%Reduced
Czech National Bank17,134$4.88M0.11%+170+1.0%Added
TownSquare Capital, LLC16,855$4.80M0.09%+1,682+11.1%Added
Sumitomo Mitsui DS Asset Management Company, Ltd16,842$4.80M0.07%+5,327+46.3%Added
Nissay Asset Management Corp16,362$4.66M0.04%−51−0.3%Reduced
Group One Trading, L.P.16,258$4.63M0.20%+6,950+74.7%Added
Raymond James Financial Services Advisors, Inc.16,162$4.60M0.01%−14,691−47.6%Reduced
Power Corp of Canada16,135$4.60M0.48%−1,177−6.8%Reduced
Vontobel Holding Ltd.15,571$4.44M0.04%+4,488+40.5%Added
Intech Investment Management LLC15,521$4.42M0.05%−111,811−87.8%Reduced
Stephens Inc15,330$4.37M0.08%−1,317−7.9%Reduced
Cambridge Investment Research Advisors, Inc.15,176$4.32M0.02%+4,612+43.7%Added
Gulf International Bank (UK) Ltd15,154$4.32M0.11%−3,742−19.8%Reduced
Norinchukin Bank, The14,980$4.27M0.07%+3,467+30.1%Added
Prudential PLC14,915$4.25M0.05%+6,776+83.3%Added
Parallax Volatility Advisers, L.P.14,911$4.25M0.15%+14,911New
Creative Planning14,874$4.24M0.01%+1,261+9.3%Added
Pacer Advisors, Inc.14,780$4.21M0.02%−2,180−12.9%Reduced
Lazard Asset Management LLC14,762$4.20M0.01%−647−4.2%Reduced
Walleye Capital LLC14,688$4.18M0.07%+994+7.3%Added