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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; 1,046 institutions reported holding it in 13F filings for Q2 2026, worth $30.7B in total; no superinvestor holds it.

13F holders, Q1 2025

Institutional positions in Biogen Inc. as of Mar 31, 2025. 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
882
+16 vs. Q4 2024
Shares held
129.8M
−2.03M (−1.5%) vs. Q4 2024
Total value
$17.7B
−$2.41B (−11.9%) vs. Q4 2024
New holders
123
331 more added
Sold out
107
273 more reduced

13 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2024: 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 holdersQ1 2025: 882 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: 1,046 institutions
Value heldQ1 2025: $17.7B
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 20261,046$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, Q1 2025

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q4 2024.

Institutions holding BIIB in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
McClarren Financial Advisors, Inc.2$00.00%+2New
Quest 10 Wealth Builders, Inc.1$1070.00%+1New
ROSS\JOHNSON & Associates LLC1$1360.00%+1New
Valued Wealth Advisors LLC1$1370.00%−2−66.7%Reduced
Brown, Lisle/Cummings, Inc.1$1370.00%+1New
HFM Investment Advisors, LLC1$1370.00%+1New
MPWM Advisory Solutions, LLC2$2740.00%00.0%Unchanged
American Capital Advisory, LLC2$2820.00%+2Added
Curio Wealth, LLC1$3060.00%+1New
WPG Advisers, LLC3$4110.00%−6−66.7%Reduced
JFS Wealth Advisors, LLC3$4110.00%−3−50.0%Reduced
Gould Capital, LLC3$4110.00%00.0%Unchanged
Nova Wealth Management, Inc.3$4110.00%+3New
Winnow Wealth LLC4$5390.00%+1+33.3%Added
Colonial Trust Co5$6840.00%−183−97.3%Reduced
Atwood & Palmer Inc5$6850.00%00.0%Unchanged
Evermay Wealth Management LLC5$6850.00%00.0%Unchanged
SOA Wealth Advisors, LLC.6$8210.00%00.0%Unchanged
LRI Investments, LLC6$8210.00%00.0%Unchanged
WestEnd Advisors, LLC6$8210.00%+4+200.0%Added
DHJJ Financial Advisors, Ltd.6$8220.00%−6−50.0%Reduced
Albion Financial Group6$8220.00%00.0%Unchanged
Fairman Group, LLC6$9180.00%00.0%Unchanged
Cape Investment Advisory, Inc.7$9580.00%−6−46.2%Reduced
CBIZ Investment Advisory Services, LLC7$9580.00%00.0%Unchanged
Noble Wealth Management PBC7$9580.00%00.0%Unchanged
Beutel, Goodman & Co Ltd.10$1.00K0.00%−1,746,467−100.0%Reduced
Penserra Capital Management LLC12$1.00K0.00%−370−96.9%Reduced
Global Financial Private Client, LLC8$1.09K0.00%+3+60.0%Added
WealthTrak Capital Management LLC8$1.09K0.00%+7+700.0%Added
Wealth Preservation Advisors, LLC9$1.23K0.00%+9New
Cromwell Holdings LLC10$1.37K0.00%−333−97.1%Reduced
Strategic Investment Solutions, Inc.10$1.37K0.00%00.0%Unchanged
Hurley Capital, LLC10$1.37K0.00%+10New
1 North Wealth Services LLC10$1.37K0.00%+10New
Dunhill Financial, LLC10$1.39K0.00%−142−93.4%Reduced
Stonebridge Financial Group, LLC11$1.50K0.00%+1+10.0%Added
Park Place Capital Corp11$1.50K0.00%+11New
Bernard Wealth Management Corp.11$1.51K0.00%00.0%Unchanged
TD Private Client Wealth LLC12$1.64K0.00%−40−76.9%Reduced
Addison Advisors LLC12$1.64K0.00%−74−86.0%Reduced
Cornerstone Planning Group LLC14$1.65K0.00%−9−39.1%Reduced
New England Capital Financial Advisors LLC13$1.78K0.00%−50−79.4%Reduced
Red Tortoise LLC13$1.78K0.00%−35−72.9%Reduced
Hollencrest Capital Management13$1.78K0.00%00.0%Unchanged
NVWM, LLC13$1.78K0.00%+9+225.0%Added
Fortis Group Advisors, LLC15$2.05K0.00%00.0%Unchanged
AdvisorNet Financial, Inc15$2.05K0.00%−47−75.8%Reduced
CarsonAllaria Wealth Management, Ltd.15$2.05K0.00%00.0%Unchanged
Accredited Wealth Management, LLC15$2.05K0.00%00.0%Unchanged
Hughes Financial Services, LLC16$2.11K0.00%+16New
Winch Advisory Services, LLC16$2.19K0.00%00.0%Unchanged
Wolff Wiese Magana LLC16$2.19K0.00%00.0%Unchanged
Rialto Wealth Management, LLC16$2.19K0.00%+16New
Plante Moran Financial Advisors, LLC17$2.33K0.00%00.0%Unchanged
Darwin Advisors, LLC16$2.45K0.00%00.0%Unchanged
Harbor Investment Advisory, LLC18$2.46K0.00%00.0%Unchanged
Ameriflex Group, Inc.18$2.46K0.00%00.0%Unchanged
Abound Wealth Management18$2.46K0.00%−3−14.3%Reduced
Hexagon Capital Partners LLC19$2.60K0.00%−18−48.6%Reduced
Compagnie Lombard Odier SCmA20$2.74K0.00%−400−95.2%Reduced
Indiana Trust & Investment Management CO20$2.74K0.00%−25−55.6%Reduced
Minot DeBlois Advisors LLC20$2.74K0.00%−12−37.5%Reduced
First United Bank Trust20$2.74K0.00%00.0%Unchanged
Beacon Capital Management, LLC20$2.74K0.00%+20New
Raffa Wealth Management, LLC21$2.87K0.00%−4−16.0%Reduced
Roble, Belko & Company, Inc25$3.00K0.00%00.0%Unchanged
Avion Wealth21$3.00K0.00%00.0%Unchanged
Pinnacle Bancorp, Inc.23$3.15K0.00%+23New
True Wealth Design, LLC25$3.42K0.00%−49−66.2%Reduced
Consultiva Wealth Management, Corp.25$3.42K0.01%00.0%Unchanged
Bartlett & Co. Wealth Management LLC26$3.56K0.00%−114−81.4%Reduced
Atlantic Trust, LLC27$3.69K0.00%+27New
Sachetta, LLC28$3.83K0.00%−1−3.4%Reduced
Bangor Savings Bank28$3.83K0.00%00.0%Unchanged
Bellwether Advisors, LLC28$3.83K0.00%00.0%Unchanged
Stone House Investment Management, LLC29$3.97K0.00%+29New
Tower View Investment Management & Research LLC29$3.97K0.00%00.0%Unchanged
Hantz Financial Services, Inc.30$4.00K0.00%+30New
Barrett & Company, Inc.30$4.11K0.00%00.0%Unchanged
Whipplewood Advisors, LLC28$4.11K0.00%−2−6.7%Reduced
ZRC Wealth Management, LLC30$4.11K0.00%00.0%Unchanged
DiNuzzo Private Wealth, Inc.32$4.38K0.00%−5−13.5%Reduced
Dynamic Wealth Strategies, LLC33$4.52K0.00%+33New
Caldwell Sutter Capital, Inc.34$4.65K0.00%00.0%Unchanged
High Note Wealth, LLC35$4.79K0.00%−22−38.6%Reduced
Rosenberg Matthew Hamilton35$4.79K0.00%00.0%Unchanged
Prestige Wealth Management Group LLC35$4.79K0.00%00.0%Unchanged
Webster Bank, N. A.36$4.93K0.00%−39−52.0%Reduced
E Fund Management (Hong Kong) Co., Ltd.40$5.00K0.00%+30+300.0%Added
Meeder Asset Management Inc38$5.20K0.00%−16−29.6%Reduced
Johnson Financial Group, Inc.39$5.34K0.00%00.0%Unchanged
Sierra Ocean, LLC39$5.34K0.00%+19+95.0%Added
Anderson Financial Strategies, LLC40$5.47K0.00%+40New
Bank Julius Baer & Co. Ltd, Zurich40$5.47K0.00%+4+11.1%Added
Cullen/Frost Bankers, Inc.40$5.47K0.00%−46−53.5%Reduced
Tortoise Investment Management, LLC40$5.47K0.00%00.0%Unchanged
Anchor Investment Management, LLC40$5.47K0.00%00.0%Unchanged
McIlrath & Eck, LLC43$5.84K0.00%00.0%Unchanged
Wood Tarver Financial Group, LLC44$6.02K0.00%00.0%Unchanged