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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 2021

Institutional positions in Biogen Inc. as of Sep 30, 2021. 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
1,044
−50 vs. Q2 2021
Shares held
123.8M
−1.32M (−1.1%) vs. Q2 2021
Total value
$35.1B
−$8.22B (−19.0%) vs. Q2 2021
New holders
74
351 more added
Sold out
124
398 more reduced

13 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2021: 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 2021: 1,044 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 2021: $35.1B
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 2021

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q2 2021.

Institutions holding BIIB in Q3 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Segall Bryant & Hamill, LLC16,020$4.54M0.04%00.0%Unchanged
Cornerstone Advisors, LLC16,000$4.53M0.26%00.0%Unchanged
Stephens Inc15,995$4.53M0.07%−2,421−13.1%Reduced
Exchange Traded Concepts, LLC15,900$4.50M0.11%+15,471+3,606.3%Added
Pacer Advisors, Inc.15,652$4.43M0.06%−39,494−71.6%Reduced
Kovitz Investment Group Partners, LLC15,592$4.41M0.09%−27−0.2%Reduced
Raymond James Financial Services Advisors, Inc.15,592$4.41M0.01%+168+1.1%Added
Swiss Life Asset Management Ltd15,552$4.40M0.06%−10,960−41.3%Reduced
Gabelli Funds LLC15,490$4.38M0.03%+135+0.9%Added
Timber Creek Capital Management LLC15,375$4.35M1.38%−72−0.5%Reduced
Wolverine Trading, LLC15,002$4.28M0.09%−5,267−26.0%Reduced
First National Bank of Omaha14,986$4.24M0.22%−570−3.7%Reduced
Norinchukin Bank, The14,927$4.22M0.06%+740+5.2%Added
Court Place Advisors, LLC14,842$4.20M1.24%−20−0.1%Reduced
ExodusPoint Capital Management, LP13,860$3.92M0.06%−16,572−54.5%Reduced
Nomura Holdings Inc13,434$3.90M0.03%−31,611−70.2%Reduced
Gotham Asset Management, LLC13,742$3.89M0.16%+10,832+372.2%Added
Blair William & Co13,685$3.87M0.01%+2,297+20.2%Added
Creative Planning13,649$3.86M0.01%+656+5.0%Added
Mariner, LLC13,533$3.83M0.02%+2,074+18.1%Added
Federation des caisses Desjardins du Quebec13,518$3.82M0.04%−373−2.7%Reduced
Rockefeller Capital Management L.P.13,420$3.80M0.02%−2,151−13.8%Reduced
KMG Fiduciary Partners, LLC13,308$3.77M0.64%−1,029−7.2%Reduced
MML Investors Services, LLC13,018$3.68M0.03%+2,548+24.3%Added
Cubist Systematic Strategies, LLC12,968$3.67M0.05%−23,740−64.7%Reduced
Daiwa Securities Group Inc.12,927$3.66M0.02%+683+5.6%Added
Cardan Capital Partners, LLC12,809$3.63M0.41%−89−0.7%Reduced
Securian Asset Management, Inc12,734$3.60M0.07%−252−1.9%Reduced
Mengis Capital Management, Inc.12,650$3.58M0.75%00.0%Unchanged
Essex Investment Management Co LLC12,648$3.58M0.44%+100+0.8%Added
Bridgewater Associates, LP12,622$3.57M0.02%−5,234−29.3%Reduced
Birchview Capital, LP12,600$3.57M2.43%+500+4.1%Added
Kestra Advisory Services, LLC12,150$3.44M0.03%−2,346−16.2%Reduced
American Assets Investment Management, LLC12,000$3.40M0.42%00.0%Unchanged
Teachers Retirement System of the State of Kentucky11,740$3.32M0.03%00.0%Unchanged
Gifford Fong Associates11,500$3.25M0.63%00.0%Unchanged
SG3 Management, LLC11,500$3.25M1.15%+11,500New
IMC-Chicago, LLC11,465$3.24M0.26%−12,940−53.0%Reduced
Maryland State Retirement & Pension System11,318$3.24M0.09%00.0%Unchanged
Marshall Wace, LLP11,422$3.23M0.02%−639,898−98.2%Reduced
Morningstar Investment Services LLC11,041$3.15M0.04%+1,810+19.6%Added
Fifth Third Bancorp11,127$3.15M0.01%−6,220−35.9%Reduced
Capstone Investment Advisors, LLC11,119$3.15M0.06%+4,153+59.6%Added
American Portfolios Advisors11,119$3.15M0.12%+769+7.4%Added
Tower Research Capital LLC (TRC)11,000$3.11M0.08%+4,263+63.3%Added
Aviance Capital Partners, LLC10,899$3.08M0.54%+1,409+14.8%Added
Nippon Life Global Investors Americas, Inc.10,890$3.08M0.16%−1,520−12.2%Reduced
IFP Advisors, Inc10,852$3.08M0.06%+318+3.0%Added
Brinker Capital Investments, LLC8,880$3.08M0.05%00.0%Unchanged
Commerce Bank10,864$3.07M0.02%+1,445+15.3%Added
Schroder Investment Management Group10,751$3.04M0.00%−2,135−16.6%Reduced
Wealthfront Advisers LLC10,604$3.00M0.01%−169−1.6%Reduced
Cambria Investment Management, L.P.10,573$2.99M0.55%−436−4.0%Reduced
Keybank National Association10,528$2.98M0.01%−1,500−12.5%Reduced
Elo Mutual Pension Insurance Co10,484$2.97M0.10%−325−3.0%Reduced
Capitolis Advisors LLC10,958$2.96M0.03%+10,958New
Distillate Capital Partners LLC10,299$2.91M0.78%−746−6.8%Reduced
Boothbay Fund Management, LLC10,288$2.91M0.12%−9,233−47.3%Reduced
McKinley Capital Management LLC /Delaware10,220$2.89M0.27%00.0%Unchanged
Guardian Investment Management10,165$2.88M2.12%−500−4.7%Reduced
Fayez Sarofim & Co10,028$2.84M0.01%00.0%Unchanged
Lipe & Dalton10,005$2.83M1.45%−70−0.7%Reduced
Crossmark Global Holdings, Inc.9,946$2.81M0.07%+1,232+14.1%Added
Hennessy Advisors Inc9,900$2.80M0.17%−200−2.0%Reduced
First Quadrant L P9,847$2.79M0.33%00.0%Unchanged
New Mexico Educational Retirement Board9,824$2.78M0.10%−300−3.0%Reduced
First Citizens Bank & Trust Co9,682$2.74M0.13%+9,682New
Level Four Advisory Services, LLC9,635$2.73M0.28%+10+0.1%Added
TownSquare Capital, LLC9,539$2.70M0.08%+1,161+13.9%Added
Sumitomo Mitsui DS Asset Management Company, Ltd9,524$2.69M0.06%−93−1.0%Reduced
Achmea Investment Management B.V.9,484$2.68M0.08%−1,518−13.8%Reduced
Walleye Trading LLC9,412$2.66M0.06%−12,696−57.4%Reduced
Jefferies Group LLC9,357$2.65M0.06%−7,306−43.8%Reduced
B. Metzler seel. Sohn & Co. Holding AG9,354$2.65M0.04%−1,526−14.0%Reduced
Greatmark Investment Partners, Inc.9,331$2.64M0.49%+206+2.3%Added
MUFG Americas Holdings Corp9,201$2.60M0.05%+4,672+103.2%Added
Trexquant Investment LP9,023$2.55M0.20%−810−8.2%Reduced
Virtu Financial LLC8,904$2.52M0.22%−7,522−45.8%Reduced
Arlington Partners LLC8,758$2.48M0.71%+488+5.9%Added
Vestmark Advisory Solutions, Inc.8,724$2.47M0.17%+54+0.6%Added
Kentucky Retirement Systems8,700$2.46M0.12%−67−0.8%Reduced
Arden Trust Co8,679$2.46M0.42%−153−1.7%Reduced
Capital Financial Services, LLC8,680$2.46M3.00%00.0%Unchanged
Whittier Trust Co of Nevada Inc8,619$2.44M0.10%+59+0.7%Added
Tudor Investment Corp Et Al8,595$2.43M0.05%+4,606+115.5%Added
Connor, Clark & Lunn Investment Management Ltd.8,578$2.43M0.01%−7,463−46.5%Reduced
OPSEU Pension Plan Trust Fund8,481$2.39M0.60%−318−3.6%Reduced
Creative Financial Designs Inc8,405$2.38M0.39%+862+11.4%Added
Horizon Investments, LLC8,342$2.36M0.07%+489+6.2%Added
Financial Advisors Network, Inc.8,657$2.34M0.54%+2,075+31.5%Added
Banque Cantonale Vaudoise8,246$2.33M0.10%+280+3.5%Added
Optimal Asset Management, Inc.8,135$2.30M0.29%+22+0.3%Added
Clark Estates Inc8,100$2.29M0.33%00.0%Unchanged
AlphaCrest Capital Management LLC8,052$2.28M0.12%−1,377−14.6%Reduced
Pinebridge Investments, L.P.8,045$2.28M0.03%+8,045New
Leelyn Smith, LLC7,950$2.25M0.65%+825+11.6%Added
Kinneret Advisory, LLC7,921$2.24M0.26%00.0%Unchanged
Pitcairn Co7,919$2.24M0.15%+663+9.1%Added
Atria Investments LLC7,793$2.21M0.04%+3,830+96.6%Added
Hussman Strategic Advisors, Inc.7,750$2.19M0.48%+4,650+150.0%Added