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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
Synovus Financial Corp11,327$2.93M0.04%+348+3.2%Added
Diversified Trust Co11,272$2.92M0.10%+11,272New
Maryland State Retirement & Pension System11,211$2.90M0.06%+210+1.9%Added
Old North State Wealth Management, LLC11,204$2.90M2.14%+870+8.4%Added
Power Corp of Canada11,158$2.89M0.30%−4,977−30.8%Reduced
Oppenheimer & Co Inc11,156$2.89M0.05%+2,779+33.2%Added
Cairn Investment Group, Inc.11,126$2.88M1.80%+323+3.0%Added
MML Investors Services, LLC10,859$2.81M0.01%+470+4.5%Added
Beck Bode, LLC10,677$2.76M0.62%+10,677New
Eisler Capital (UK) Ltd.10,639$2.75M0.25%−23,052−68.4%Reduced
Federation des caisses Desjardins du Quebec10,605$2.74M0.03%−5,924−35.8%Reduced
Court Place Advisors, LLC10,473$2.71M0.89%−163−1.5%Reduced
Pathstone Holdings, LLC10,409$2.69M0.01%+10,409New
Cresset Asset Management, LLC10,366$2.68M0.02%+4,298+70.8%Added
Keybank National Association10,338$2.68M0.01%−782−7.0%Reduced
Cubist Systematic Strategies, LLC10,291$2.66M0.03%+7,947+339.0%Added
JustInvest LLC10,206$2.64M0.07%−525−4.9%Reduced
Guardian Investment Management10,165$2.63M2.23%+100+1.0%Added
Captrust Financial Advisors10,160$2.63M0.01%−174−1.7%Reduced
Hartford Investment Management Co9,762$2.53M0.09%−2,409−19.8%Reduced
Crossmark Global Holdings, Inc.9,527$2.46M0.05%−2,255−19.1%Reduced
Stephens Inc9,454$2.45M0.04%−270−2.8%Reduced
PEAK6 Investments LLC9,402$2.43M0.11%−6,106−39.4%Reduced
Money Concepts Capital Corp9,214$2.38M0.22%−232−2.5%Reduced
Securian Asset Management, Inc9,179$2.38M0.07%−1,201−11.6%Reduced
Commerce Bank9,162$2.37M0.02%−75−0.8%Reduced
Independent Advisor Alliance9,051$2.34M0.08%+363+4.2%Added
Vident Advisory, LLC9,034$2.34M0.06%+2,969+49.0%Added
Twin Capital Management Inc8,851$2.29M0.30%−278−3.0%Reduced
Leo Wealth, LLC8,754$2.26M0.23%+8,754New
M&G Investment Management Ltd8,593$2.23M0.01%00.0%Unchanged
Brinker Capital Investments, LLC8,515$2.20M0.03%−954−10.1%Reduced
Orion Portfolio Solutions, LLC8,515$2.20M0.03%−954−10.1%Reduced
Bellevue Group AG8,485$2.20M0.03%−8,829−51.0%Reduced
Exome Asset Management LLC8,200$2.12M2.10%+8,200New
Mengis Capital Management, Inc.8,055$2.08M0.39%00.0%Unchanged
Leonteq Securities AG7,964$2.06M0.26%+1,479+22.8%Added
Whittier Trust Co of Nevada Inc7,930$2.05M0.07%−837−9.5%Reduced
Metis Global Partners, LLC7,871$2.04M0.08%−56−0.7%Reduced
Bridgeway Capital Management, LLC7,800$2.02M0.04%−4,150−34.7%Reduced
Mercer Global Advisors Inc7,702$1.99M0.01%−2,735−26.2%Reduced
Hudson Canyon Capital Management7,700$1.99M1.45%00.0%Unchanged
Ramsay, Stattman, Vela & Price, Inc.7,545$1.95M0.40%−75−1.0%Reduced
New Mexico Educational Retirement Board7,524$1.95M0.07%00.0%Unchanged
Schonfeld Strategic Advisors LLC7,520$1.95M0.02%+5,685+309.8%Added
Shell Asset Management Co7,462$1.93M0.09%+2,430+48.3%Added
Northwestern Mutual Wealth Management Co7,314$1.89M0.00%+134+1.9%Added
Level Four Advisory Services, LLC7,199$1.86M0.10%−158−2.1%Reduced
Farther Finance Advisors, LLC7,196$1.86M0.13%+6,018+510.9%Added
Hennion & Walsh Asset Management, Inc.7,067$1.83M0.10%+319+4.7%Added
Prudential PLC7,042$1.82M0.02%−7,741−52.4%Reduced
Thor Investment Management Inc7,013$1.81M1.58%+7,013New
Advisors Asset Management, Inc.6,990$1.81M0.04%+1,120+19.1%Added
Mogy Joel R Investment Counsel Inc6,960$1.80M0.14%00.0%Unchanged
NEOS Investment Management LLC6,837$1.77M0.17%+353+5.4%Added
Aquatic Capital Management LLC6,800$1.76M0.04%+5,920+672.7%Added
Wolverine Trading, LLC6,647$1.72M0.01%−8,017−54.7%Reduced
Nippon Life Global Investors Americas, Inc.6,630$1.72M0.10%00.0%Unchanged
Alberta Investment Management Corp6,600$1.71M0.02%+2,100+46.7%Added
Cornerstone Advisors, LLC6,500$1.68M0.07%−4,500−40.9%Reduced
Wealth Enhancement Advisory Services, LLC6,491$1.68M0.00%−5,520−46.0%Reduced
Siemens Fonds Invest GmbH6,466$1.67M0.14%+981+17.9%Added
B. Metzler seel. Sohn & Co. AG6,449$1.67M0.02%−2,199−25.4%Reduced
Norinchukin Bank, The6,381$1.65M0.04%−924−12.6%Reduced
GWM Advisors LLC6,539$1.65M0.02%+3,172+94.2%Added
Cetera Advisor Networks LLC6,320$1.64M0.01%+230+3.8%Added
Stevens Capital Management LP6,304$1.63M0.41%+6,304New
Hussman Strategic Advisors, Inc.6,300$1.63M0.37%00.0%Unchanged
Oak Associates, Ltd6,190$1.60M0.12%−250−3.9%Reduced
Loring Wolcott & Coolidge Fiduciary Advisors LLP6,479$1.60M0.02%−230−3.4%Reduced
Partnership Wealth Management, LLC6,479$1.60M1.20%+6,479New
PDT Partners, LLC6,125$1.58M0.18%+4,525+282.8%Added
Alaska Permanent Fund Corp6,103$1.58M0.03%+6,103New
Summit Global Investments6,088$1.57M0.10%+6,088New
Brown Brothers Harriman & Co5,967$1.54M0.01%00.0%Unchanged
Wealthfront Advisers LLC5,932$1.54M0.01%+332+5.9%Added
Metropolitan Life Insurance Co5,899$1.53M0.07%−93−1.6%Reduced
STRS Ohio5,825$1.51M0.01%−81,114−93.3%Reduced
Ameritas Investment Partners, Inc.5,813$1.50M0.06%+132+2.3%Added
BI Asset Management Fondsmaeglerselskab A/S5,763$1.49M0.03%−764−11.7%Reduced
Knights of Columbus Asset Advisors LLC5,660$1.46M0.09%+2,800+97.9%Added
North Star Investment Management Corp.5,634$1.46M0.11%−5−0.1%Reduced
E. Ohman J:or Asset Management AB5,599$1.45M0.05%−900−13.8%Reduced
Intellectus Partners, LLC5,563$1.44M0.42%−50−0.9%Reduced
Credit Agricole S A5,535$1.43M0.03%+2,845+105.8%Added
CAPROCK Group, Inc.5,513$1.43M0.09%+427+8.4%Added
Cambridge Investment Research Advisors, Inc.5,477$1.42M0.01%−282−4.9%Reduced
Ci Investments Inc.5,342$1.38M0.01%−290−5.1%Reduced
Linden Thomas Advisory Services, LLC5,300$1.37M0.26%−80−1.5%Reduced
Spears Abacus Advisors LLC5,280$1.37M0.11%00.0%Unchanged
Seizert Capital Partners, LLC5,274$1.36M0.07%+126+2.4%Added
Kestra Private Wealth Services, LLC5,262$1.36M0.03%+5,262New
Citadel Advisors LLC5,261$1.36M0.00%−72,875−93.3%Reduced
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management5,234$1.35M0.05%+5,234New
Capstone Investment Advisors, LLC5,190$1.34M0.02%−714−12.1%Reduced
Empirical Finance, LLC5,165$1.34M0.09%+21+0.4%Added
Kentucky Retirement Systems Insurance Trust Fund5,162$1.34M0.09%−217−4.0%Reduced
Toroso Investments, LLC5,129$1.33M0.03%−1,117−17.9%Reduced
TD Waterhouse Canada Inc.4,761$1.33M0.01%+107+2.3%Added
Easterly Investment Partners LLC5,084$1.32M0.14%−1,778−25.9%Reduced