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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
Fort Washington Investment Advisors Inc18,692$4.80M0.04%00.0%Unchanged
Greenwood Capital Associates LLC19,080$4.90M0.71%−6,282−24.8%Reduced
Exchange Capital Management, Inc.19,378$4.98M0.94%−190−1.0%Reduced
Gotham Asset Management, LLC19,450$5.00M0.10%−11,698−37.6%Reduced
Two Sigma Investments, LP19,514$5.02M0.01%−5,652−22.5%Reduced
Mariner, LLC19,661$5.05M0.01%−282−1.4%Reduced
Old Mission Capital LLC19,823$5.09M0.17%+19,823New
American Assets Investment Management, LLC20,000$5.14M0.57%00.0%Unchanged
Neuberger Berman Group LLC20,127$5.17M0.00%−292,312−93.6%Reduced
Louisiana State Employees Retirement System20,500$5.27M0.12%+2,500+13.9%Added
Oregon Public Employees Retirement Fund20,642$5.31M0.07%−4,162−16.8%Reduced
Shelton Capital Management20,651$5.31M0.20%+3,488+20.3%Added
US Bancorp20,904$5.37M0.01%−2,480−10.6%Reduced
Janus Henderson Group PLC21,088$5.42M0.00%+1,007+5.0%Added
Xponance, Inc.21,293$5.47M0.07%+1,446+7.3%Added
Natixis21,535$5.53M0.04%−10,402−32.6%Reduced
Dai-Ichi Life Insurance Company, Ltd21,681$5.57M0.12%−2,500−10.3%Reduced
Auxier Asset Management21,760$5.59M0.95%−25−0.1%Reduced
UBS Oconnor LLC22,000$5.65M0.10%+22,000New
Nicola Wealth Management Ltd.22,000$5.65M0.61%+22,000New
Public Employees Retirement Association of Colorado22,069$5.67M0.03%−1,656−7.0%Reduced
CI Private Wealth, LLC22,759$5.85M0.01%+642+2.9%Added
Achmea Investment Management B.V.22,902$5.89M0.13%−961−4.0%Reduced
Commonwealth Equity Services, LLC23,416$6.02M0.01%+433+1.9%Added
Natixis Advisors, L.P.23,601$6.07M0.02%−4,720−16.7%Reduced
Envestnet Portfolio Solutions, Inc.23,980$6.16M0.03%+23,980New
Banque Pictet & Cie SA24,022$6.17M0.07%−15,354−39.0%Reduced
Platinum Investment Management Ltd24,044$6.18M0.24%00.0%Unchanged
Weiss Multi-Strategy Advisers LLC24,252$6.23M0.15%−7,525−23.7%Reduced
Yousif Capital Management, LLC24,456$6.29M0.08%−606−2.4%Reduced
CIBC World Markets Corp24,653$6.34M0.06%−4,425−15.2%Reduced
Parallax Volatility Advisers, L.P.24,775$6.37M0.22%+9,864+66.2%Added
Utah Retirement Systems24,815$6.38M0.09%+49+0.2%Added
The PNC Financial Services Group, Inc.25,113$6.45M0.01%−2,424−8.8%Reduced
Czech National Bank25,312$6.51M0.10%+8,178+47.7%Added
Lazard Asset Management LLC25,828$6.64M0.01%+11,066+75.0%Added
Sphera Funds Management Ltd.25,846$6.64M1.59%+2,000+8.4%Added
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund26,021$6.69M0.09%−600−2.3%Reduced
First Citizens Bank & Trust Co26,348$6.77M0.13%+8,340+46.3%Added
Daiwa Securities Group Inc.25,314$6.87M0.05%+6,677+35.8%Added
Mutual of America Capital Management LLC27,142$6.98M0.09%+2,033+8.1%Added
Cardinal Capital Management27,630$7.10M1.45%+361+1.3%Added
Silverarc Capital Management, LLC28,069$7.21M2.69%+1,215+4.5%Added
Forsta Ap-Fonden28,100$7.22M0.08%+1,700+6.4%Added
CSM Advisors, LLC28,226$7.25M0.63%−590−2.0%Reduced
Glenmede Trust Co NA28,264$7.26M0.04%−58,328−67.4%Reduced
Beacon Investment Advisory Services, Inc.28,752$7.39M0.36%−957−3.2%Reduced
Commonwealth of Pennsylvania Public School Empls Retrmt Sys29,119$7.48M0.06%+3,876+15.4%Added
Intech Investment Management LLC29,929$7.69M0.11%+14,408+92.8%Added
Texas Permanent School Fund29,935$7.69M0.08%−141−0.5%Reduced
Channing Capital Management, LLC30,026$7.72M0.25%+30,026New
Bank of Nova Scotia30,094$7.73M0.02%+17,036+130.5%Added
USS Investment Management Ltd30,219$7.77M0.09%+1,719+6.0%Added
ICICI Prudential Asset Management Co Ltd31,296$8.04M1.05%+2,824+9.9%Added
NorthCrest Asset Manangement, LLC31,999$8.22M0.34%+608+1.9%Added
Andra AP-fonden32,000$8.22M0.48%−5,200−14.0%Reduced
New York Life Investment Management LLC32,095$8.25M0.09%−1,195−3.6%Reduced
Squarepoint Ops LLC32,788$8.43M0.04%+27,241+491.1%Added
IFM Investors Pty Ltd33,075$8.50M0.11%+1,662+5.3%Added
Ossiam33,366$8.58M0.15%−20,280−37.8%Reduced
Eisler Capital (UK) Ltd.33,691$8.66M0.38%+20,012+146.3%Added
Bridger Management, LLC34,261$8.81M3.23%−12,372−26.5%Reduced
Hillman Capital Management, Inc.34,306$8.82M3.39%+4,895+16.6%Added
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main34,621$8.90M0.01%+1,415+4.3%Added
Advisor Group Holdings, Inc.34,753$8.93M0.01%+9,765+39.1%Added
MetLife Investment Management35,806$9.20M0.07%−919−2.5%Reduced
State of Tennessee, Treasury Department37,046$9.52M0.04%−711−1.9%Reduced
Amalgamated Bank37,753$9.70M0.08%+993+2.7%Added
Comerica Bank38,079$9.79M0.05%+38,079New
Teacher Retirement System of Texas38,312$9.85M0.07%+694+1.8%Added
State of Michigan Retirement System39,703$10.2M0.07%−100−0.3%Reduced
Bokf, NA42,961$10.2M0.22%+15,583+56.9%Added
International Biotechnology Trust PLC40,200$10.3M3.48%+29,200+265.5%Added
Calamos Advisors LLC40,318$10.4M0.06%00.0%Unchanged
CIBC Asset Management Inc40,451$10.4M0.04%+3,924+10.7%Added
Arizona State Retirement System40,970$10.5M0.09%−331−0.8%Reduced
Jupiter Asset Management Ltd41,279$10.6M0.12%+41,279New
Oppenheimer Asset Management Inc.41,395$10.6M0.16%+123+0.3%Added
Atwood & Palmer Inc41,636$10.7M0.94%−66−0.2%Reduced
AMF Pensionsforsakring AB43,849$11.3M0.11%00.0%Unchanged
Grimes & Company, Inc.44,570$11.5M0.44%+486+1.1%Added
Mackenzie Financial Corp46,830$11.8M0.02%+4,209+9.9%Added
Jane Street Group, LLC46,854$12.0M0.02%−88,059−65.3%Reduced
Altrinsic Global Advisors LLC47,161$12.1M0.47%−2,414−4.9%Reduced
State of Alaska, Department of Revenue47,175$12.1M0.15%−565−1.2%Reduced
Point72 Asset Management, L.P.48,100$12.4M0.04%−577,541−92.3%Reduced
Edmond de Rothschild Holding S.A.48,145$12.4M0.25%+19,820+70.0%Added
KBC Group NV48,478$12.5M0.05%−23,832−33.0%Reduced
Baird Financial Group, Inc.48,952$12.6M0.03%−2,511−4.9%Reduced
ING Groep NV48,976$12.6M0.11%+5,128+11.7%Added
UniSuper Management Pty Ltd49,072$12.6M0.15%−15,026−23.4%Reduced
Aviva PLC49,189$12.6M0.05%−8,072−14.1%Reduced
Factory Mutual Insurance Co49,200$12.6M0.18%00.0%Unchanged
Tredje AP-fonden50,383$12.9M0.19%00.0%Unchanged
LPL Financial LLC50,810$13.1M0.01%+8,781+20.9%Added
Truist Financial Corp51,596$13.3M0.02%−17,656−25.5%Reduced
American International Group, Inc.52,582$13.5M0.09%−492−0.9%Reduced
Gateway Investment Advisers LLC52,836$13.6M0.17%−156−0.3%Reduced
Two Sigma Advisers, LP52,900$13.6M0.03%−104,300−66.3%Reduced
Schroder Investment Management Group54,683$14.1M0.02%−21,277−28.0%Reduced