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Biogen (BIIB) Institutional Ownership

Biogen logo
$136.36 -0.36 (-0.26%)
Closing price 08/27/2025 04:00 PM Eastern
Extended Trading
$136.60 +0.24 (+0.18%)
As of 04:59 AM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.
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Institutional Ownership Changes (13F Filings) for Biogen (NASDAQ:BIIB)

Current
Institutional Ownership
Percentage
87.93%
Number of
Institutional Buyers
(last 12 months)
597
Total
Institutional Inflows
(last 12 months)
$4.37B
Number of
Institutional Sellers
(last 12 months)
408
Total
Institutional Outflows
(last 12 months)
$2.66B
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BIIB Institutional Buying and Selling by Quarter

Biogen Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/27/2025 Orion Porfolio Solutions LLC8,587$1.08M0.0%+15.0%0.006%
8/26/2025 Thrivent Financial for Lutherans18,195$2.29M0.0%+24.2%0.012%
8/25/2025 Neuberger Berman Group LLC11,116$1.40M0.0%+61.3%0.008%
8/22/2025 Cim Investment Management Inc.5,764$803K0.2%+99.7%0.004%
8/20/2025 Kentucky Retirement Systems9,333$1.17M0.0%-6.2%0.006%
8/20/2025 Kentucky Retirement Systems Insurance Trust Fund3,961$497K0.0%-6.5%0.003%
8/19/2025 B. Riley Wealth Advisors Inc.1,991$250K0.0%N/A0.001%
8/19/2025 State of Wyoming3,379$424K0.1%+31.9%0.002%
8/19/2025 Pitcairn Co.7,454$936K0.1%N/A0.005%
8/18/2025 Hudson Bay Capital Management LP267,740$33.63M0.1%+33.5%0.183%
8/18/2025 CYBER HORNET ETFs LLC373$47K0.0%N/A0.000%
8/16/2025 Public Sector Pension Investment Board11,252$1.41M0.0%-44.0%0.008%
8/16/2025 Evergreen Capital Management LLC1,932$243K0.0%-36.5%0.001%
8/16/2025 Headlands Technologies LLC22,791$2.86M0.3%-8.0%0.016%
8/15/2025 CANADA LIFE ASSURANCE Co130,933$16.46M0.0%+4.3%0.089%
8/15/2025 Tower Research Capital LLC TRC 2,914$366K0.0%-64.6%0.002%
8/15/2025 MUFG Securities EMEA plc431$54K0.0%N/A0.000%
8/15/2025 Corient Private Wealth LLC34,653$4.35M0.0%+16.3%0.024%
8/15/2025 Auxier Asset Management10,232$1.29M0.2%-24.5%0.007%
8/15/2025 State of Tennessee Department of Treasury36,544$4.59M0.0%-17.9%0.025%
8/15/2025 E Fund Management Co. Ltd.13,810$1.73M0.1%+3.2%0.009%
8/15/2025 Captrust Financial Advisors14,595$1.83M0.0%+16.0%0.010%
8/15/2025 WFA of San Diego LLC253$32K0.0%N/A0.000%
8/15/2025 Vident Advisory LLC5,064$636K0.0%-25.9%0.003%
8/15/2025 Tidal Investments LLC21,984$2.76M0.0%+10.7%0.015%
8/15/2025 Smartleaf Asset Management LLC202$25K0.0%-38.2%0.000%
8/15/2025 Royal London Asset Management Ltd.67,746$8.51M0.0%-3.6%0.046%
8/15/2025 Rafferty Asset Management LLC180,440$22.66M0.1%-0.2%0.123%
8/15/2025 Orion Investment Co32,901$4.13M1.5%+3.9%0.022%
8/15/2025 Orion Porfolio Solutions LLC517,275$64.97M0.5%+6,828.4%0.353%
8/15/2025 MML Investors Services LLC8,560$1.08M0.0%+7.8%0.006%
8/15/2025 Man Group plc793,282$99.63M0.2%+3.7%0.541%
8/15/2025 Lazard Asset Management LLC58,131$7.30M0.0%-0.8%0.040%
8/15/2025 HRT Financial LP38,276$4.81M0.0%-78.5%0.026%
8/15/2025 Hillman Capital Management Inc.41,972$5.27M2.9%-4.7%0.029%
8/15/2025 Hudson Bay Capital Management LP267,740$33.63M0.1%+33.5%0.183%
8/15/2025 Humankind Investments LLC3,039$382K0.1%-13.1%0.002%
8/15/2025 Great Valley Advisor Group Inc.2,076$261K0.0%-36.9%0.001%
8/15/2025 EP Wealth Advisors LLC4,614$579K0.0%+5.2%0.003%
8/15/2025 Engineers Gate Manager LP33,008$4.15M0.1%-57.1%0.023%
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8/15/2025 BI Asset Management Fondsmaeglerselskab A S6,626$832K0.0%+25.4%0.005%
8/15/2025 Boothbay Fund Management LLC10,922$1.37M0.0%+503.4%0.007%
8/15/2025 BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp23,034$2.89M0.0%-17.4%0.016%
8/15/2025 Brevan Howard Capital Management LP13,456$1.69M0.0%+59.9%0.009%
8/15/2025 Balyasny Asset Management L.P.831,905$104.48M0.2%+5.8%0.567%
8/15/2025 Adage Capital Partners GP L.L.C.247,937$31.14M0.1%+250.4%0.169%
8/15/2025 Ameriprise Financial Inc.126,056$15.83M0.0%+22.9%0.086%
8/15/2025 AQR Capital Management LLC1,364,805$171.41M0.1%-0.3%0.931%
8/14/2025 PDT Partners LLC31,664$3.98M0.2%N/A0.022%
8/14/2025 California State Teachers Retirement System238,691$29.98M0.0%+3.5%0.163%
8/14/2025 Raymond James Financial Inc.51,997$6.53M0.0%+23.9%0.035%
8/14/2025 Canada Pension Plan Investment Board255,183$32.05M0.0%+10.6%0.174%
8/14/2025 Quantinno Capital Management LP54,166$6.80M0.0%+223.8%0.037%
8/14/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.139,832$17.56M0.0%-3.3%0.095%
8/14/2025 DZ BANK AG Deutsche Zentral Genossenschafts Bank Frankfurt am Main147,482$18.52M0.0%+11.0%0.101%
8/14/2025 Alliancebernstein L.P.231,108$29.03M0.0%+0.9%0.158%
8/14/2025 Caption Management LLC11,000$1.38M0.0%N/A0.008%
8/14/2025 Ieq Capital LLC112,251$14.10M0.1%+61.0%0.077%
8/14/2025 Treasurer of the State of North Carolina68,242$8.57M0.0%+2.4%0.047%
8/14/2025 The Manufacturers Life Insurance Company 107,753$13.53M0.0%-9.6%0.073%
8/14/2025 Investment House LLC1,730$217K0.0%-46.3%0.001%
8/14/2025 Sei Investments Co.22,028$2.77M0.0%-31.9%0.015%
8/14/2025 NewEdge Advisors LLC2,673$336K0.0%+13.4%0.002%
8/14/2025 Investment Management Corp of Ontario6,078$763K0.0%-7.6%0.004%
8/14/2025 iSAM Funds UK Ltd4,525$568K0.1%N/A0.003%
8/14/2025 AXA S.A.108,572$13.64M0.0%-29.5%0.074%
8/14/2025 Lombard Odier Asset Management Switzerland SA16,430$2.06M0.1%-22.0%0.011%
8/14/2025 State Street Corp7,468,807$938.01M0.0%+1.0%5.094%
8/14/2025 Daiwa Securities Group Inc.39,128$4.91M0.0%-9.8%0.027%
8/14/2025 CoreFirst Bank & Trust894$112K0.1%N/A0.001%
8/14/2025 Natixis34,781$4.37M0.0%+16.3%0.024%
8/14/2025 Ossiam50,487$6.34M0.1%-3.2%0.034%
8/14/2025 California Public Employees Retirement System339,050$42.58M0.0%-12.0%0.231%
8/14/2025 Cerity Partners LLC46,552$5.85M0.0%+15.3%0.032%
8/14/2025 Federated Hermes Inc.120,277$15.11M0.0%+16.5%0.082%
8/13/2025 Jump Financial LLC8,169$1.03M0.0%-88.8%0.006%
8/13/2025 Avestar Capital LLC2,797$351K0.0%+28.6%0.002%
8/13/2025 Cresset Asset Management LLC87,650$11.01M0.0%-332.2%0.060%
8/13/2025 Amundi579,797$77.22M0.0%-55.9%0.395%
8/13/2025 Marshall Wace LLP165,955$20.84M0.0%+2,712.8%0.113%
8/13/2025 Baird Financial Group Inc.4,673$587K0.0%-51.7%0.003%
8/13/2025 First Trust Advisors LP873,823$109.74M0.1%+32.1%0.596%
8/13/2025 Guggenheim Capital LLC59,827$7.51M0.1%+12.6%0.041%
8/13/2025 EverSource Wealth Advisors LLC2,004$252K0.0%+102.0%0.001%
8/13/2025 Invesco Ltd.2,320,126$291.39M0.0%+2.4%1.582%
8/13/2025 CW Advisors LLC4,106$516K0.0%+35.4%0.003%
8/13/2025 Nicolet Bankshares Inc.2,790$350K0.1%+53.6%0.002%
8/13/2025 Arrowstreet Capital Limited Partnership624,371$78.42M0.1%+190.7%0.426%
8/13/2025 Quantbot Technologies LP1,597$201K0.0%-88.7%0.001%
8/13/2025 M&T Bank Corp15,502$1.95M0.0%+26.0%0.011%
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8/13/2025 Fisher Asset Management LLC289,137$36.31M0.0%-3.3%0.197%
8/13/2025 Claret Asset Management Corp1,864$234K0.0%N/A0.001%
8/13/2025 Edgestream Partners L.P.16,164$2.03M0.1%-4.1%0.011%
8/13/2025 Shelton Capital Management17,368$2.18M0.1%-16.9%0.012%
8/13/2025 Panagora Asset Management Inc.3,132$393K0.0%-5.6%0.002%
8/13/2025 Lido Advisors LLC5,148$647K0.0%-88.0%0.004%
8/13/2025 New York State Common Retirement Fund140,245$17.61M0.0%+6.9%0.096%
8/13/2025 Schroder Investment Management Group13,767$1.73M0.0%-77.2%0.009%
8/13/2025 Mackenzie Financial Corp82,336$10.34M0.0%+76.4%0.056%
8/13/2025 Skandinaviska Enskilda Banken AB publ 67,231$8.45M0.0%+43.9%0.046%
(Data available from 1/1/2016 forward)

BIIB Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of BIIB shares?

During the previous two years, 995 institutional investors and hedge funds held shares of Biogen. The most heavily invested institutionals were Vanguard Group Inc. ($2.17B), Primecap Management Co. CA ($1.98B), State Street Corp ($938.01M), International Assets Investment Management LLC ($695.87M), Wellington Management Group LLP ($639.38M), Geode Capital Management LLC ($490.09M), and Morgan Stanley ($383.75M).Learn more on Biogen's institutional investors.

What percentage of Biogen's stock is owned by institutional investors?

87.93% of Biogen's stock is owned by institutional investors. Learn more on BIIB's institutional investor holdings.

Which institutional investors have been buying Biogen's stock?

Of the 848 institutional investors that purchased Biogen's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Norges Bank ($6.05M), Vanguard Group Inc. ($4.99M), Pacer Advisors Inc. ($2.66M), Van ECK Associates Corp ($1.75M), AQR Capital Management LLC ($1.34M), First Trust Advisors LP ($936.99K), and Invesco Ltd. ($879.76K).

How much institutional buying is happening at Biogen?

Institutional investors have bought a total of 29,525,143 shares in the last 24 months. This purchase volume represents approximately $4.37B in transactions.

Which of Biogen's major shareholders have been selling company stock?

Of the 408 institutional investors that sold Biogen's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: T. Rowe Price Investment Management Inc. ($1.60M), Pacer Advisors Inc. ($1.31M), Ameriprise Financial Inc. ($1.01M), Van ECK Associates Corp ($823.82K), Price T Rowe Associates Inc. MD ($782.52K), Amundi ($736.15K), and SG Americas Securities LLC ($684.72K).

How much institutional selling is happening at Biogen?

Institutional investors have sold a total of 18,086,083 shares in the last 24 months. This volume of shares sold represents approximately $2.66B in transactions.


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This page (NASDAQ:BIIB) was last updated on 8/28/2025 by MarketBeat.com Staff
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