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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, Q4 2023

Institutional positions in Biogen Inc. as of Dec 31, 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
1,005
+56 vs. Q3 2023
Shares held
128.7M
+4.02M (+3.2%) vs. Q3 2023
Total value
$33.3B
+$1.22B (+3.8%) vs. Q3 2023
New holders
137
287 more added
Sold out
81
373 more reduced

17 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2023: 1,005 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 heldQ4 2023: $33.3B
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, Q4 2023

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q3 2023.

Institutions holding BIIB in Q4 2023
InstitutionSharesValue% of portfolioChange in sharesAction
CI Private Wealth, LLC31,212$8.08M0.01%+8,453+37.1%Added
NorthCrest Asset Manangement, LLC31,069$8.04M0.30%−930−2.9%Reduced
Andra AP-fonden31,000$8.02M0.42%−1,000−3.1%Reduced
USS Investment Management Ltd30,219$7.82M0.07%00.0%Unchanged
Texas Permanent School Fund29,928$7.74M0.07%−70.0%Reduced
Pacer Advisors, Inc.28,929$7.49M0.02%+12,343+74.4%Added
Ossiam28,620$7.41M0.12%−4,746−14.2%Reduced
CSM Advisors, LLC28,139$7.28M0.52%−87−0.3%Reduced
Beacon Investment Advisory Services, Inc.27,626$7.15M0.32%−1,126−3.9%Reduced
Cardinal Capital Management27,622$7.15M1.35%−80.0%Reduced
Tower Research Capital LLC (TRC)27,389$7.09M0.09%+17,302+171.5%Added
Yousif Capital Management, LLC27,201$7.04M0.08%+2,745+11.2%Added
Mutual of America Capital Management LLC27,050$7.00M0.08%−92−0.3%Reduced
Swiss Life Asset Management Ltd26,823$6.95M0.08%+10,531+64.6%Added
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund26,121$6.76M0.08%+100+0.4%Added
Banque Pictet & Cie SA25,839$6.69M0.08%+1,817+7.6%Added
Czech National Bank25,377$6.57M0.09%+65+0.3%Added
Lazard Asset Management LLC25,136$6.50M0.01%−692−2.7%Reduced
Nicola Wealth Management Ltd.25,000$6.47M0.68%+3,000+13.6%Added
Healthcare of Ontario Pension Plan Trust Fund25,000$6.47M0.02%+25,000New
Sivik Global Healthcare LLC25,000$6.47M2.70%+25,000New
Utah Retirement Systems24,915$6.45M0.08%+100+0.4%Added
Forsta Ap-Fonden24,600$6.37M0.06%−3,500−12.5%Reduced
The PNC Financial Services Group, Inc.24,367$6.31M0.00%−746−3.0%Reduced
Stoneridge Investment Partners LLC24,322$6.29M2.65%+24,322New
Allspring Global Investments Holdings, LLC24,238$6.27M0.01%−33,675−58.1%Reduced
Natixis Advisors, L.P.24,166$6.25M0.02%+565+2.4%Added
Platinum Investment Management Ltd24,020$6.22M0.25%−24−0.1%Reduced
D. E. Shaw & Co., Inc.23,935$6.19M0.01%−254,903−91.4%Reduced
New York Life Investment Management LLC23,318$6.03M0.06%−8,777−27.3%Reduced
Vontobel Holding Ltd.22,930$5.93M0.05%+8,499+58.9%Added
Commonwealth Equity Services, LLC22,612$5.85M0.01%−804−3.4%Reduced
Neuberger Berman Group LLC22,393$5.79M0.01%+2,266+11.3%Added
Auxier Asset Management21,658$5.60M0.91%−102−0.5%Reduced
Mariner, LLC21,529$5.57M0.01%+1,868+9.5%Added
Public Employees Retirement Association of Colorado21,450$5.55M0.03%−619−2.8%Reduced
Shelton Capital Management21,189$5.48M0.17%+538+2.6%Added
Janus Henderson Group PLC21,174$5.48M0.00%+86+0.4%Added
Summit Partners Public Asset Management, LLC20,830$5.39M0.29%+20,830New
Investment Management Corp of Ontario20,557$5.32M0.13%+20,557New
Daiwa Securities Group Inc.20,479$5.30M0.03%−4,835−19.1%Reduced
Ostrum Asset Management20,310$5.26M0.46%+9,112+81.4%Added
Louisiana State Employees Retirement System20,300$5.25M0.11%−200−1.0%Reduced
Exchange Capital Management, Inc.20,298$5.25M0.94%+920+4.7%Added
US Bancorp20,224$5.23M0.01%−680−3.3%Reduced
Pinebridge Investments, L.P.20,104$5.20M0.05%+6,838+51.5%Added
Xponance, Inc.20,047$5.19M0.06%−1,246−5.9%Reduced
Silverarc Capital Management, LLC20,000$5.18M1.60%−8,069−28.7%Reduced
American Assets Investment Management, LLC20,000$5.18M0.53%00.0%Unchanged
Intech Investment Management LLC19,922$5.16M0.08%−10,007−33.4%Reduced
Profund Advisors LLC19,612$5.07M0.22%+2,571+15.1%Added
Nissay Asset Management Corp19,444$5.03M0.04%+1,763+10.0%Added
Greenwood Capital Associates LLC19,145$4.95M0.64%+65+0.3%Added
China Universal Asset Management Co., Ltd.19,027$4.92M0.96%+14,634+333.1%Added
Advisor Group Holdings, Inc.18,733$4.85M0.01%−16,020−46.1%Reduced
Fort Washington Investment Advisors Inc18,692$4.84M0.03%00.0%Unchanged
Ilmarinen Mutual Pension Insurance Co18,000$4.66M0.06%00.0%Unchanged
Sumitomo Mitsui DS Asset Management Company, Ltd17,753$4.59M0.06%−80−0.4%Reduced
Verition Fund Management LLC17,065$4.42M0.04%−194,971−92.0%Reduced
M&T Bank Corp16,966$4.39M0.02%−263−1.5%Reduced
Janney Montgomery Scott LLC16,924$4.38M0.01%−1,348−7.4%Reduced
Meitav Dash Investments Ltd16,800$4.35M0.06%+80.0%Added
British Columbia Investment Management Corp16,671$4.31M0.04%+3,513+26.7%Added
GTS Securities LLC15,981$4.14M0.09%+658+4.3%Added
Sectoral Asset Management Inc15,827$4.10M1.76%+815+5.4%Added
Groupama Asset Managment15,783$4.09M0.11%+15,783New
TownSquare Capital, LLC15,526$4.02M0.07%−761−4.7%Reduced
Panagora Asset Management Inc15,360$3.97M0.02%−110,392−87.8%Reduced
Fiera Capital Corp15,076$3.90M0.01%+1,591+11.8%Added
Raymond James Financial Services Advisors, Inc.14,818$3.83M0.01%−1,178−7.4%Reduced
Gabelli Funds LLC14,700$3.80M0.03%−70−0.5%Reduced
Abn Amro Investment Solutions14,586$3.77M0.07%−840−5.4%Reduced
Prime Capital Investment Advisors, LLC14,199$3.67M0.06%+14,199New
SG Americas Securities, LLC14,179$3.67M0.04%−2,387−14.4%Reduced
Varma Mutual Pension Insurance Co14,100$3.65M0.04%+14,100New
Lifeworks Advisors, LLC13,862$3.59M1.24%+1,340+10.7%Added
Ethic Inc.13,859$3.59M0.11%+6,290+83.1%Added
HighTower Advisors, LLC13,731$3.57M0.01%+969+7.6%Added
Liontrust Investment Partners LLP13,603$3.52M0.05%−90−0.7%Reduced
Glenmede Trust Co NA13,524$3.50M0.02%−14,740−52.2%Reduced
Quotient Wealth Partners, LLC13,313$3.45M0.13%+13,313New
Tredje AP-fonden13,263$3.43M0.04%−37,120−73.7%Reduced
Fred Alger Management, LLC13,235$3.42M0.02%+13,235New
iA Global Asset Management Inc.13,031$3.37M0.08%+960+8.0%Added
Group One Trading, L.P.12,786$3.31M0.10%+3,538+38.3%Added
Kinneret Advisory, LLC12,761$3.30M0.37%+12,761New
Elo Mutual Pension Insurance Co12,693$3.29M0.09%+579+4.8%Added
Creative Planning12,503$3.24M0.01%−767−5.8%Reduced
Teachers Retirement System of the State of Kentucky12,487$3.23M0.03%−521−4.0%Reduced
Gulf International Bank (UK) Ltd12,366$3.20M0.09%−1,437−10.4%Reduced
Tobam11,922$3.08M0.27%−933−7.3%Reduced
Oversea-Chinese Banking CORP Ltd11,770$3.05M0.11%+750+6.8%Added
Blair William & Co11,735$3.04M0.01%−2,388−16.9%Reduced
Arlington Partners LLC11,656$3.02M0.87%+11,656New
Bayesian Capital Management, LP11,600$3.00M0.32%+11,600New
Kentucky Retirement Systems11,593$3.00M0.09%−455−3.8%Reduced
Gifford Fong Associates11,500$2.98M0.63%00.0%Unchanged
Dai-Ichi Life Insurance Company, Ltd11,459$2.96M0.06%−10,222−47.1%Reduced
North Growth Management Ltd.11,000$2.95M0.63%00.0%Unchanged
Oregon Public Employees Retirement Fund11,337$2.93M0.05%−9,305−45.1%Reduced