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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, Q1 2024

Institutional positions in Biogen Inc. as of Mar 31, 2024. 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
955
−41 vs. Q4 2023
Shares held
129.7M
+1.13M (+0.9%) vs. Q4 2023
Total value
$28.0B
−$5.30B (−15.9%) vs. Q4 2023
New holders
105
304 more added
Sold out
146
354 more reduced

9 institutions that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 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 holdersQ1 2024: 955 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 heldQ1 2024: $28.0B
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, Q1 2024

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q4 2023.

Institutions holding BIIB in Q1 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Retirement Systems of Alabama31,981$6.90M0.03%+48+0.2%Added
Commonwealth of Pennsylvania Public School Empls Retrmt Sys31,809$6.86M0.05%+78+0.2%Added
NorthCrest Asset Manangement, LLC31,434$6.78M0.23%+365+1.2%Added
China Universal Asset Management Co., Ltd.30,584$6.59M0.84%+11,557+60.7%Added
Cardinal Capital Management30,467$6.57M1.07%+2,845+10.3%Added
Mediolanum International Funds Ltd30,278$6.55M0.11%+30,278New
CI Private Wealth, LLC30,348$6.54M0.01%−864−2.8%Reduced
Amalgamated Bank30,017$6.47M0.06%−4,839−13.9%Reduced
Texas Permanent School Fund29,963$6.46M0.05%+35+0.1%Added
Stoneridge Investment Partners LLC29,874$6.44M2.45%+5,552+22.8%Added
Degroof Petercam Asset Management29,300$6.32M0.08%−11,000−27.3%Reduced
FORA Capital, LLC28,652$6.18M0.51%+28,652New
CSM Advisors, LLC28,409$6.13M0.40%+270+1.0%Added
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund27,821$6.00M0.07%+1,700+6.5%Added
Forsta Ap-Fonden27,800$5.99M0.05%+3,200+13.0%Added
Banque Pictet & Cie SA27,786$5.99M0.06%+1,947+7.5%Added
Ensign Peak Advisors, Inc27,076$5.84M0.01%−57,387−67.9%Reduced
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main26,421$5.70M0.01%−10,054−27.6%Reduced
Beacon Investment Advisory Services, Inc.26,254$5.66M0.24%−1,372−5.0%Reduced
Bokf, NA25,798$5.54M0.10%−8,556−24.9%Reduced
Czech National Bank25,494$5.50M0.07%+117+0.5%Added
Ossiam25,314$5.46M0.10%−3,306−11.6%Reduced
Natixis Advisors, L.P.25,097$5.41M0.01%+931+3.9%Added
Utah Retirement Systems24,915$5.37M0.06%00.0%Unchanged
The PNC Financial Services Group, Inc.24,585$5.30M0.00%+218+0.9%Added
Mutual of America Capital Management LLC24,551$5.29M0.06%−2,499−9.2%Reduced
Point72 (DIFC) Ltd24,407$5.26M0.41%+24,407New
Yousif Capital Management, LLC24,179$5.21M0.06%−3,022−11.1%Reduced
CIBC World Markets Corp24,100$5.20M0.03%−15,352−38.9%Reduced
E. Ohman J:or Asset Management AB24,099$5.20M0.13%+18,500+330.4%Added
Entropy Technologies, LP23,358$5.04M0.54%+23,358New
Marshall Wace, LLP23,228$5.01M0.01%+23,228New
Ostrum Asset Management22,793$4.91M0.39%+2,483+12.2%Added
Leonteq Securities AG22,724$4.90M0.66%+14,760+185.3%Added
Lazard Asset Management LLC22,719$4.90M0.01%−2,417−9.6%Reduced
Daiwa Securities Group Inc.22,651$4.88M0.03%+2,172+10.6%Added
New York Life Investment Management LLC22,628$4.88M0.05%−690−3.0%Reduced
Kirr Marbach & Co LLC22,247$4.80M1.16%+22,247New
Commonwealth Equity Services, LLC22,187$4.78M0.01%−425−1.9%Reduced
Quantitative Investment Management, LLC21,371$4.61M0.27%+21,371New
Baird Financial Group, Inc.21,203$4.57M0.01%−28,066−57.0%Reduced
Shelton Capital Management21,189$4.57M0.13%00.0%Unchanged
Mariner, LLC21,076$4.54M0.01%−453−2.1%Reduced
Xponance, Inc.21,036$4.54M0.05%+989+4.9%Added
Groupama Asset Managment13,491$4.51M0.08%−2,292−14.5%Reduced
Diversified Trust Co20,860$4.50M0.14%+9,588+85.1%Added
Andra AP-fonden20,800$4.49M0.08%−10,200−32.9%Reduced
Public Employees Retirement Association of Colorado20,594$4.44M0.02%−856−4.0%Reduced
Exchange Capital Management, Inc.20,348$4.39M0.71%+50+0.2%Added
American Assets Investment Management, LLC20,000$4.31M0.41%00.0%Unchanged
Louisiana State Employees Retirement System19,800$4.27M0.08%−500−2.5%Reduced
Cubist Systematic Strategies, LLC19,793$4.27M0.05%+9,502+92.3%Added
Neuberger Berman Group LLC19,696$4.25M0.00%−2,697−12.0%Reduced
Silverarc Capital Management, LLC19,365$4.18M1.17%−635−3.2%Reduced
Profund Advisors LLC19,071$4.11M0.16%−541−2.8%Reduced
Vontobel Holding Ltd.18,881$4.07M0.03%−4,049−17.7%Reduced
Verition Fund Management LLC18,233$3.93M0.04%+1,168+6.8%Added
Ilmarinen Mutual Pension Insurance Co18,000$3.88M0.05%00.0%Unchanged
Fort Washington Investment Advisors Inc17,814$3.84M0.02%−878−4.7%Reduced
Sumitomo Mitsui DS Asset Management Company, Ltd17,691$3.81M0.05%−62−0.3%Reduced
US Bancorp17,576$3.79M0.01%−2,648−13.1%Reduced
British Columbia Investment Management Corp17,299$3.73M0.03%+628+3.8%Added
Pacer Advisors, Inc.16,917$3.65M0.01%−12,012−41.5%Reduced
Meitav Dash Investments Ltd16,840$3.63M0.07%+40+0.2%Added
Auxier Asset Management16,605$3.58M0.54%−5,053−23.3%Reduced
M&T Bank Corp16,567$3.57M0.01%−399−2.4%Reduced
Lifeworks Advisors, LLC16,537$3.57M1.00%+2,675+19.3%Added
Pinebridge Investments, L.P.16,397$3.53M0.03%−3,707−18.4%Reduced
Advisor Group Holdings, Inc.16,307$3.52M0.01%−2,426−13.0%Reduced
Janney Montgomery Scott LLC15,970$3.44M0.01%−954−5.6%Reduced
Evergreen Capital Management LLC15,400$3.32M0.13%+14,441+1,505.8%Added
Raymond James Financial Services Advisors, Inc.14,898$3.21M0.00%+80+0.5%Added
Cetera Investment Advisers14,860$3.20M0.01%+10,425+235.1%Added
Panagora Asset Management Inc14,821$3.20M0.02%−539−3.5%Reduced
Gabelli Funds LLC14,700$3.17M0.02%00.0%Unchanged
PEAK6 Investments LLC14,416$3.11M0.15%+5,014+53.3%Added
NewEdge Wealth, LLC14,495$3.09M0.07%+13,114+949.6%Added
Sienna Gestion14,318$3.09M0.28%+14,318New
HighTower Advisors, LLC14,040$3.02M0.00%+309+2.3%Added
Quantinno Capital Management LP14,006$3.02M0.07%+11,956+583.2%Added
Synovus Financial Corp13,907$3.00M0.04%+2,580+22.8%Added
Leo Wealth, LLC13,852$2.99M0.31%+5,098+58.2%Added
TownSquare Capital, LLC13,837$2.98M0.04%−1,689−10.9%Reduced
Creative Planning13,801$2.98M0.00%+1,298+10.4%Added
iA Global Asset Management Inc.13,658$2.94M0.06%+627+4.8%Added
Elo Mutual Pension Insurance Co13,226$2.85M0.07%+533+4.2%Added
Virtu Financial LLC13,200$2.85M0.22%+13,200New
Bedell Frazier Investment Counseling, LLC13,097$2.82M0.71%+13,097New
Prudential PLC12,952$2.79M0.02%+5,910+83.9%Added
Blair William & Co12,867$2.77M0.01%+1,132+9.6%Added
Federation des caisses Desjardins du Quebec11,955$2.76M0.02%+1,350+12.7%Added
Kinneret Advisory, LLC12,721$2.74M0.27%−40−0.3%Reduced
Oversea-Chinese Banking CORP Ltd12,581$2.71M0.09%+811+6.9%Added
Fiera Capital Corp12,501$2.70M0.01%−2,575−17.1%Reduced
Arlington Partners LLC12,489$2.69M1.37%+833+7.1%Added
Glenmede Trust Co NA12,429$2.68M0.01%−1,095−8.1%Reduced
Gulf International Bank (UK) Ltd12,429$2.68M0.07%+63+0.5%Added
Oregon Public Employees Retirement Fund12,396$2.67M0.05%+1,059+9.3%Added
Old North State Wealth Management, LLC12,334$2.66M1.74%+1,130+10.1%Added
Prime Capital Investment Advisors, LLC12,136$2.62M0.04%−2,063−14.5%Reduced