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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, Q3 2023

Institutional positions in Biogen Inc. as of Sep 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
966
−27 vs. Q2 2023
Shares held
125.0M
−292.7K (−0.2%) vs. Q2 2023
Total value
$32.2B
−$3.51B (−9.8%) vs. Q2 2023
New holders
91
333 more added
Sold out
118
346 more reduced

16 institutions that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2023: 966 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 heldQ3 2023: $32.2B
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, Q3 2023

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q2 2023.

Institutions holding BIIB in Q3 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Erste Asset Management GmbH274,629$70.6M1.22%+1,533+0.6%Added
Armistice Capital, LLC276,788$71.1M2.11%+20,788+8.1%Added
Rhumbline Advisers278,552$71.6M0.08%−2,184−0.8%Reduced
D. E. Shaw & Co., Inc.278,838$71.7M0.12%−567,606−67.1%Reduced
Thrivent Financial for Lutherans280,647$72.1M0.17%−8,657−3.0%Reduced
TD Asset Management Inc281,028$72.2M0.09%+64,844+30.0%Added
California Public Employees Retirement System281,163$72.3M0.06%+6,532+2.4%Added
DekaBank Deutsche Girozentrale284,129$72.9M0.17%+45,530+19.1%Added
National Pension Service295,942$76.4M0.12%+14,730+5.2%Added
Envestnet Asset Management Inc299,051$76.9M0.04%−13,824−4.4%Reduced
Polar Capital Holdings Plc300,000$77.1M0.57%−25,000−7.7%Reduced
Royal Bank of Canada306,554$78.8M0.02%−45,986−13.0%Reduced
AQR Capital Management LLC306,679$78.8M0.16%−29,709−8.8%Reduced
Carmignac Gestion309,100$79.4M1.46%−1,000−0.3%Reduced
Robeco Institutional Asset Management B.V.341,810$87.8M0.23%−1,407−0.4%Reduced
LSV Asset Management344,652$88.6M0.21%−8,772−2.5%Reduced
Credit Suisse AG348,711$89.6M0.09%−2,685−0.8%Reduced
Bank of America Corp354,093$91.0M0.01%+27,914+8.6%Added
Parnassus Investments360,742$92.7M0.23%+54,934+18.0%Added
Sumitomo Mitsui Trust Holdings, Inc.378,509$97.3M0.08%−1,732−0.5%Reduced
Palo Alto Investors LP381,282$98.0M9.27%00.0%Unchanged
Barclays PLC395,676$101.7M0.07%−192,085−32.7%Reduced
First Trust Advisors LP405,513$104.2M0.12%−6,186−1.5%Reduced
UBS Group AG419,798$107.9M0.05%+27,066+6.9%Added
Samlyn Capital, LLC420,355$108.0M1.91%+25,083+6.3%Added
AXA S.A.441,249$113.4M0.40%+1,047+0.2%Added
Alyeska Investment Group, L.P.442,076$113.6M0.78%+74,808+20.4%Added
Employees Provident Fund Board442,416$113.7M2.58%+154,916+53.9%Added
Massachusetts Financial Services Co446,602$114.8M0.04%+300,086+204.8%Added
Swiss National Bank465,600$119.7M0.09%−56,300−10.8%Reduced
Ra Capital Management, L.P.532,892$137.0M2.70%00.0%Unchanged
OrbiMed Advisors LLC556,800$143.1M3.31%00.0%Unchanged
Nuveen Asset Management, LLC582,753$149.8M0.05%−23,851−3.9%Reduced
Franklin Resources Inc628,534$161.5M0.08%+185,742+41.9%Added
Sarissa Capital Management LP643,000$165.3M22.26%00.0%Unchanged
BNP PARIBAS ASSET MANAGEMENT Holding S.A.660,546$169.8M0.52%+108,841+19.7%Added
Allianz Asset Management GmbH772,358$198.5M0.40%+20,147+2.7%Added
Goldman Sachs Group Inc790,845$203.3M0.05%−34,820−4.2%Reduced
Charles Schwab Investment Management Inc848,690$218.1M0.06%−1,511−0.2%Reduced
American Century Companies Inc898,928$231.0M0.18%+200,310+28.7%Added
Deutsche Bank AG936,482$240.7M0.16%−268,701−22.3%Reduced
Beutel, Goodman & Co Ltd.999,276$256.8M1.52%−700.0%Reduced
UBS Asset Management Americas Inc1,065,518$273.8M0.12%−49,084−4.4%Reduced
Renaissance Technologies LLC1,086,397$279.2M0.48%−23,140−2.1%Reduced
Amundi1,093,524$286.8M0.14%−93,789−7.9%Reduced
Price T Rowe Associates Inc1,163,530$299.0M0.04%+34,888+3.1%Added
Invesco Ltd.1,181,374$303.6M0.08%+189,368+19.1%Added
Van Eck Associates Corp1,189,546$305.7M0.67%+233,889+24.5%Added
Pictet Asset Management Holding SA1,212,482$311.6M0.38%+1,212,482New
Legal & General Group Plc1,339,078$344.2M0.12%−30,443−2.2%Reduced
FMR LLC1,361,051$349.8M0.03%−1,279,470−48.5%Reduced
Dimensional Fund Advisors LP1,381,215$355.0M0.12%+35,473+2.6%Added
Bank of New York Mellon Corp1,430,132$367.6M0.08%−39,363−2.7%Reduced
Morgan Stanley1,493,113$383.7M0.04%+61,814+4.3%Added
Norges Bank1,529,096$393.0M0.08%+89,871+6.2%Added
Northern Trust Corp1,643,035$422.3M0.08%+45,437+2.8%Added
Clearbridge Investments, LLC1,823,182$468.6M0.45%−4,482−0.2%Reduced
Geode Capital Management, LLC3,236,887$830.2M0.10%+53,208+1.7%Added
T. Rowe Price Investment Management, Inc.4,754,991$1.22B0.86%+1,355,921+39.9%Added
JPMorgan Chase & Co4,985,752$1.28B0.15%+514,565+11.5%Added
Wellington Management Group LLP5,374,310$1.38B0.28%+27,951+0.5%Added
State Street Corp6,865,654$1.76B0.10%−19,561−0.3%Reduced
Vanguard Group Inc12,188,586$3.13B0.08%−7,850−0.1%Reduced
BlackRock Inc.13,974,587$3.59B0.10%−91,407−0.6%Reduced
Primecap Management Co16,012,566$4.12B3.47%−13,310−0.1%Reduced
Transamerica Financial Advisors, Inc.1––00.0%Unchanged
Farallon Capital Management, L.L.C.0$00.00%−604,098−100.0%Sold out
Fred Alger Management, LLC0$00.00%−125,980−100.0%Sold out
Braidwell LP0$00.00%−121,942−100.0%Sold out
Employees Retirement System of Texas0$00.00%−108,000−100.0%Sold out
Segantii Capital Management Ltd0$00.00%−100,000−100.0%Sold out
Logos Global Management LP0$00.00%−100,000−100.0%Sold out
Connor, Clark & Lunn Investment Management Ltd.0$00.00%−54,037−100.0%Sold out
Clal Insurance Enterprises Holdings Ltd0$00.00%−53,000−100.0%Sold out
Artia Global Partners LP0$00.00%−52,275−100.0%Sold out
Point72 Middle East FZE0$00.00%−42,500−100.0%Sold out
Affinity Asset Advisors, LLC0$00.00%−40,000−100.0%Sold out
Centre Asset Management, LLC0$00.00%−34,686−100.0%Sold out
Twin Tree Management, LP0$00.00%−29,552−100.0%Sold out
Brookfield Asset Management Inc.0$00.00%−26,305−100.0%Sold out
Picton Mahoney Asset Management0$00.00%−18,202−100.0%Sold out
Brookstone Capital Management0$00.00%−14,994−100.0%Sold out
Kinneret Advisory, LLC0$00.00%−12,850−100.0%Sold out
Meeder Asset Management Inc0$00.00%−12,210−100.0%Sold out
Ontario Teachers Pension Plan Board0$00.00%−10,719−100.0%Sold out
TKG Advisors, LLC0$00.00%−10,717−100.0%Sold out
Sivik Global Healthcare LLC0$00.00%−10,000−100.0%Sold out
Virtu Financial LLC0$00.00%−9,785−100.0%Sold out
Segall Bryant & Hamill, LLC0$00.00%−9,051−100.0%Sold out
Caisse de Depot Et Placement du Quebec0$00.00%−8,185−100.0%Sold out
Rockefeller Capital Management L.P.0$00.00%−8,019−100.0%Sold out
Fairfield, Bush & Co.0$00.00%−7,000−100.0%Sold out
Walleye Trading LLC0$00.00%−6,800−100.0%Sold out
G&S Capital LLC0$00.00%−6,800−100.0%Sold out
Copperwynd Financial, LLC0$00.00%−6,250−100.0%Sold out
Waycross Partners, LLC0$00.00%−6,000−100.0%Sold out
FORA Capital, LLC0$00.00%−5,903−100.0%Sold out
Vident Investment Advisory, LLC0$00.00%−5,594−100.0%Sold out
Marshall Wace, LLP0$00.00%−5,055−100.0%Sold out
Arlington Partners LLC0$00.00%−5,025−100.0%Sold out