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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.

Q3 2025 vs. Q2 2025

How the institutions holding Biogen Inc. changed between Q2 2025 and Q3 2025.

All holders in Q3 2025All holders in Q2 2025

13F holders of BIIB: Q2 2025 compared with Q3 2025
MeasureQ2 2025Of which not filed for Q3 2025Q3 2025Change
Holders86710909+52
Shares130.1M2.32M131.3M+3.52M (+2.8%)
Value$16.3B$291.5M$18.4B+$2.32B (+14.5%)

10 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (125)

Institutions that held Biogen Inc. at the end of Q3 2025 but not at the end of Q2 2025.

Showing the largest 100 of 125 by value.

Institutions new to BIIB in Q3 2025
InstitutionSharesValue% of portfolio
Vestal Point Capital, LP275,000$38.5M1.75%
Kames Capital plc195,635$27.4M0.32%
Wedge Capital Management L L P192,872$27.0M0.46%
Parkman Healthcare Partners LLC130,165$18.2M2.00%
AXA Investment Managers S.A.118,311$16.6M0.04%
Silverarc Capital Management, LLC80,419$11.3M1.63%
Baader Bank INC55,974$7.83M0.65%
Eversept Partners, LP51,765$7.25M0.56%
Bridgewater Associates, LP39,983$5.60M0.02%
Credit Agricole S A37,452$5.25M0.02%
Lighthouse Investment Partners, LLC28,000$3.92M0.14%
CIBC Bancorp USA Inc.25,593$3.59M0.02%
Fluent Financial, LLC25,543$3.58M1.40%
Leuthold Group, LLC23,517$3.29M0.36%
Morningstar Investment Management LLC18,779$2.63M0.10%
K.J. Harrison & Partners Inc10,006$1.55M0.22%
Capula Management Ltd10,208$1.43M0.01%
Krensavage Asset Management, LLC10,000$1.40M0.60%
Convergence Investment Partners, LLC9,583$1.34M0.30%
Great Lakes Advisors, LLC9,479$1.33M0.01%
Shay Capital LLC9,000$1.26M0.23%
Dakota Wealth Management8,677$1.22M0.02%
Krilogy Financial LLC7,707$1.18M0.04%
Landscape Capital Management, L.L.C.7,122$997.6K0.06%
Holocene Advisors, LP5,979$837.5K0.00%
CAPROCK Group, Inc.5,611$741.9K0.02%
Rockefeller Capital Management L.P.5,175$724.9K0.00%
Bayesian Capital Management, LP5,100$714.4K0.15%
Davis Investment Partners, LLC4,303$663.6K0.23%
Allstate Corp4,700$658.4K0.02%
Stevens Capital Management LP3,967$556.0K0.07%
Summit Wealth Group LLC2,146$551.5K0.08%
GTS Securities LLC3,340$467.9K0.02%
Sompo Asset Management Co., Ltd.3,240$453.9K0.08%
Beacon Pointe Advisors, LLC3,224$451.6K0.00%
Waterfront Wealth Inc.2,731$402.3K0.08%
Requisite Capital Management, LLC2,585$362.1K0.06%
Marex Group plc2,525$353.7K0.00%
Caerus Investment Advisors, LLC2,480$347.4K0.14%
Sage Mountain Advisors LLC2,390$334.8K0.02%
Supplemental Annuity Collective Trust of NJ2,300$322.2K0.08%
Voleon Capital Management LP2,253$315.6K0.01%
Atom Investors LP2,222$311.3K0.02%
Lineweaver Wealth Advisors, LLC2,209$309.4K0.05%
Independent Advisor Alliance2,171$304.1K0.01%
Philip James Wealth Mangement, LLC2,146$300.6K0.04%
Petros Family Wealth, LLC2,109$295.4K0.25%
Camelot Portfolios, LLC2,100$294.2K0.17%
Advus Financial Partners, LLC2,070$290.0K0.07%
Fred Alger Management, LLC2,039$285.6K0.00%
Knott David M Jr2,000$280.2K0.12%
Catalytic Wealth RIA, LLC2,000$280.2K0.01%
BSW Wealth Partners1,988$278.5K0.03%
Bridgefront Capital, LLC1,962$274.8K0.08%
Patton Fund Management, Inc.1,846$258.6K0.05%
Crestwood Advisors Group LLC1,821$255.1K0.00%
QTR Family Wealth, LLC1,760$246.5K0.12%
Waddell & Associates, LLC1,719$240.8K0.02%
DGS Capital Management, LLC1,708$239.3K0.04%
Fidelis Capital Partners, LLC1,703$238.6K0.02%
Sym Financial Corp1,695$237.4K0.03%
Transcend Wealth Collective, LLC1,679$235.2K0.02%
Kera Capital Partners, Inc.1,665$233.2K0.03%
Joel Isaacson & Co., LLC1,664$233.1K0.01%
Financiere des Professionnels - Fonds d,investissement inc.1,646$230.6K0.01%
Abacus Planning Group, Inc.1,641$229.9K0.03%
Parcion Private Wealth LLC1,619$226.8K0.01%
Baker Avenue Asset Management, LP1,598$223.9K0.01%
Resonant Capital Advisors, LLC1,575$220.6K0.01%
Concurrent Investment Advisors, LLC1,572$220.2K0.00%
Mason & Associates Inc1,563$218.9K0.04%
Poinciana Advisors Group, LLC1,554$217.7K0.18%
Berkshire Asset Management LLC1,541$215.9K0.01%
Alpha Family Trust1,540$215.7K0.10%
Modern Wealth Management, LLC1,507$211.1K0.00%
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management1,465$205.2K0.00%
AE Wealth Management LLC1,462$204.8K0.00%
Cigna Investments Inc1,457$204.0K0.03%
Israel Discount Bank of New York1,453$203.5K0.60%
Prasad Wealth Partners, LLC1,452$203.5K0.06%
Johnson Investment Counsel Inc1,429$200.2K0.00%
Independent Financial Group, LLC1,428$200.0K0.00%
Board of the Pension Protection Fund1,400$196.1K0.19%
Cary Street Partners Financial LLC1,355$189.8K0.00%
Wealthspire Advisors, LLC1,067$149.5K0.00%
Mather Group, LLC.902$126.4K0.00%
Emerald Mutual Fund Advisers Trust623$87.3K0.00%
Mma Asset Management LLC600$84.0K0.03%
Bayforest Capital Ltd429$60.1K0.03%
Caitong International Asset Management Co., Ltd382$53.5K0.04%
ORG Wealth Partners, LLC349$48.9K0.01%
Sentry Investment Management LLC305$46.0K0.03%
Cary Street Partner Investment Advisory LLC109$15.3K0.01%
Global Trust Asset Management, LLC100$14.0K0.01%
Clayton Financial Group LLC87$12.2K0.01%
Quent Capital, LLC82$11.5K0.00%
Steigerwald, Gordon & Koch Inc.79$11.1K0.00%
Salomon & Ludwin, LLC57$9.11K0.00%
Root Financial Partners, LLC62$8.69K0.00%
Saranac Partners Ltd57$7.99K0.00%

Sold out (73)

Institutions that held Biogen Inc. at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of BIIB in Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
AXA S.A.108,572$13.6M
Trexquant Investment LP80,822$10.2M
Seizert Capital Partners, LLC66,245$8.32M
Engineers Gate Manager LP33,008$4.15M
Jain Global LLC26,046$3.27M
Mirae Asset Securities (USA) Inc.23,059$2.90M
Headlands Technologies LLC22,791$2.86M
Andra AP-fonden22,400$2.81M
Ikarian Capital, LLC21,516$2.70M
Arlington Partners LLC20,417$2.56M
PEAK6 LLC17,286$2.17M
Optiver Holding B.V.16,550$2.08M
Edgestream Partners, L.P.16,164$2.03M
Qsemble Capital Management, LP13,909$1.75M
Sprucegrove Investment Management Ltd13,310$1.67M
Point72 Hong Kong Ltd11,083$1.39M
MYDA Advisors LLC10,000$1.26M
Miracle Mile Advisors, LLC9,594$1.20M
Fieldview Capital Management, LLC8,837$1.11M
Dohj, LLC8,853$1.05M
Cornercap Investment Counsel Inc7,894$991.4K
Wolverine Trading, LLC6,667$840.6K
Y-Intercept (Hong Kong) Ltd6,318$793.5K
Tudor Investment Corp Et Al6,000$753.5K
Ontario Teachers Pension Plan Board5,786$726.7K
V-Square Quantitative Management LLC4,679$587.6K
Howard Capital Management Inc.4,442$557.9K
ARGA Investment Management, LP4,133$519.1K
Eqis Capital Management, Inc.3,144$394.9K
Cornerstone Advisors, LLC3,100$389.3K
Integrated Quantitative Investments LLC2,820$354.2K
Aquatic Capital Management LLC2,792$350.6K
Fiduciary Trust Co2,754$345.9K
Quarry LP2,681$336.7K
DRW Securities, LLC2,578$320.7K
Sherbrooke Park Advisers LLC2,512$315.5K
Legacy Wealth Asset Management, LLC2,511$315.4K
Magnetar Financial LLC2,484$312.0K
Maven Securities LTD2,404$301.9K
Mutual Advisors, LLC1,780$234.1K
Atomi Financial Group, Inc.1,800$226.1K
Perpetual Ltd1,797$225.7K
Valeo Financial Advisors, LLC1,794$225.3K
MBB Public Markets I LLC1,729$217.1K
Kennedy Investment Group1,615$202.8K
Lighthouse Financial LLC1,600$200.9K
Employees Retirement System of Texas1,467$184.0K
New Age Alpha Advisors, LLC1,132$142.2K
Raiffeisen Bank International AG822$104.5K
GeoWealth Management, LLC643$80.8K
Ofi Invest Asset Management750$80.2K
NewSquare Capital LLC244$30.6K
Mount Yale Investment Advisors, LLC200$25.1K
Opal Wealth Advisors, LLC186$23.4K
Livelsberger Financial Advisory100$12.6K
Twin Peaks Wealth Advisors, LLC70$9.03K
Kestra Investment Management, LLC62$8.48K
Wood Tarver Financial Group, LLC44$5.00K
Whipplewood Advisors, LLC32$4.02K
Bellwether Advisors, LLC26$3.27K
Chilton Capital Management LLC20$2.51K
Compagnie Lombard Odier SCmA20$2.51K
GFG Capital, LLC16$2.01K
Stone House Investment Management, LLC14$1.76K
New England Capital Financial Advisors LLC13$1.63K
Kayne Anderson Rudnick Investment Management LLC9$1.13K
Evolution Wealth Management Inc.8$1.00K
Sierra Ocean, LLC8$1.00K
WealthTrak Capital Management LLC7$880
Riggs Asset Managment Co. Inc.4$503
Stephens Consulting, LLC4$503
Curio Wealth, LLC2$251
Valued Wealth Advisors LLC1$126

Not filed for Q3 2025 yet (10)

Institutions that held Biogen Inc. at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding BIIB in Q2 2025 that haven't filed for Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
Norges Bank2,264,177$284.4M
CIBC World Markets Corp28,878$3.63M
E Fund Management Co., Ltd.13,810$1.73M
EP Wealth Advisors, LLC4,614$579.5K
Congress Wealth Management LLC4,106$515.7K
Enterprise Bank & Trust Co2,618$328.8K
Avantax Advisory Services, Inc.2,498$313.7K
Financial Gravity Companies, Inc.295$37.0K
First Horizon Advisors, Inc.110$13.9K
Parkworth Wealth Management, Inc.6$754