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Biogen (BIIB) Institutional Ownership

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$134.94 -0.25 (-0.18%)
Closing price 04:00 PM Eastern
Extended Trading
$134.95 +0.01 (+0.01%)
As of 04:35 PM 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)
585
Total
Institutional Inflows
(last 12 months)
$4.24B
Number of
Institutional Sellers
(last 12 months)
401
Total
Institutional Outflows
(last 12 months)
$2.73B
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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
8/14/2025State Street Corp7,468,807$938.01M0.0%+1.0%5.094%
8/14/2025Daiwa Securities Group Inc.39,128$4.91M0.0%-9.8%0.027%
8/14/2025CoreFirst Bank & Trust894$112K0.1%N/A0.001%
8/14/2025Natixis34,781$4.37M0.0%+16.3%0.024%
8/14/2025Ossiam50,487$6.34M0.1%-3.2%0.034%
8/14/2025California Public Employees Retirement System339,050$42.58M0.0%-12.0%0.231%
8/14/2025Cerity Partners LLC46,552$5.85M0.0%+15.3%0.032%
8/14/2025Federated Hermes Inc.120,277$15.11M0.0%+16.5%0.082%
8/13/2025Jump Financial LLC8,169$1.03M0.0%-88.8%0.006%
8/13/2025Avestar Capital LLC2,797$351K0.0%+28.6%0.002%
8/13/2025Cresset Asset Management LLC87,650$11.01M0.0%-332.2%0.060%
8/13/2025Amundi579,797$77.22M0.0%-55.9%0.395%
8/13/2025Marshall Wace LLP165,955$20.84M0.0%+2,712.8%0.113%
8/13/2025Baird Financial Group Inc.4,673$587K0.0%-51.7%0.003%
8/13/2025First Trust Advisors LP873,823$109.74M0.1%+32.1%0.596%
8/13/2025Guggenheim Capital LLC59,827$7.51M0.1%+12.6%0.041%
8/13/2025EverSource Wealth Advisors LLC2,004$252K0.0%+102.0%0.001%
8/13/2025Invesco Ltd.2,320,126$291.39M0.0%+2.4%1.582%
8/13/2025CW Advisors LLC4,106$516K0.0%+35.4%0.003%
8/13/2025Nicolet Bankshares Inc.2,790$350K0.1%+53.6%0.002%
8/13/2025Arrowstreet Capital Limited Partnership624,371$78.42M0.1%+190.7%0.426%
8/13/2025Quantbot Technologies LP1,597$201K0.0%-88.7%0.001%
8/13/2025M&T Bank Corp15,502$1.95M0.0%+26.0%0.011%
8/13/2025Fisher Asset Management LLC289,137$36.31M0.0%-3.3%0.197%
8/13/2025Claret Asset Management Corp1,864$234K0.0%N/A0.001%
8/13/2025Edgestream Partners L.P.16,164$2.03M0.1%-4.1%0.011%
8/13/2025Shelton Capital Management17,368$2.18M0.1%-16.9%0.012%
8/13/2025Panagora Asset Management Inc.3,132$393K0.0%-5.6%0.002%
8/13/2025Lido Advisors LLC5,148$647K0.0%-88.0%0.004%
8/13/2025New York State Common Retirement Fund140,245$17.61M0.0%+6.9%0.096%
8/13/2025Schroder Investment Management Group13,767$1.73M0.0%-77.2%0.009%
8/13/2025Mackenzie Financial Corp82,336$10.34M0.0%+76.4%0.056%
8/13/2025Skandinaviska Enskilda Banken AB publ 67,231$8.45M0.0%+43.9%0.046%
8/13/2025Neuberger Berman Group LLC11,116$1.40M0.0%+61.3%0.008%
8/13/2025Virtus Investment Advisers LLC3,359$422K0.1%+45.3%0.002%
8/13/2025Norges Bank2,264,177$284.36M0.0%N/A1.544%
8/13/2025Patient Capital Management LLC320,466$40.25M1.8%-29.7%0.219%
8/13/2025Northwestern Mutual Wealth Management Co.5,803$729K0.0%+4.9%0.004%
8/13/2025Groupama Asset Managment8,918$1.12M0.0%+12.4%0.006%
8/13/2025State Board of Administration of Florida Retirement System134,847$16.94M0.0%+1.0%0.092%
New law could create $3.7 trillion tsunami. (Ad)

During a meeting in Washington D.C., Jeff Brown discovered a bold initiative. He calls it “President Trump’s Project MAFA,” and it could soon return America to a “new” gold standard. The Trump administration, Wall Street, and Silicon Valley are all pushing it forward. The President himself calls the plan “incredible.” Already, it’s helping small plays jump as high as 300%, 318%, 520%, and even 600%.

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8/13/2025Korea Investment CORP61,508$7.73M0.0%-7.4%0.042%
8/13/2025Elevation Point Wealth Partners LLC200$25K0.0%N/A0.000%
8/13/2025Quadrant Capital Group LLC8,172$1.03M0.0%+425.2%0.006%
8/13/2025Vinva Investment Management Ltd58,862$7.42M0.2%N/A0.040%
8/13/2025Employees Retirement System of Texas1,467$184K0.0%N/A0.001%
8/13/2025Choreo LLC1,671$210K0.0%N/A0.001%
8/13/2025Russell Investments Group Ltd.242,053$30.41M0.0%+16.6%0.165%
8/13/2025Rhenman & Partners Asset Management AB12,000$1.51M0.2%-75.8%0.008%
8/12/2025 Inceptionr LLC9,500$1.19M0.3%+45.1%0.006%
8/12/2025 J.W. Cole Advisors Inc.2,017$253K0.0%N/A0.001%
8/12/2025 Elo Mutual Pension Insurance Co17,934$2.25M0.0%+2.4%0.012%
8/12/2025 Advisors Asset Management Inc.5,713$717K0.0%-10.5%0.004%
8/12/2025 Edmond DE Rothschild Holding S.A.59,680$7.50M0.1%-0.6%0.041%
8/12/2025 Steward Partners Investment Advisory LLC990$124K0.0%-7.6%0.001%
8/12/2025 Horizon Kinetics Asset Management LLC3,038$382K0.0%-4.1%0.002%
8/12/2025Jefferies Financial Group Inc.37,117$4.66M0.0%-25.8%0.025%
8/12/2025 Prudential Financial Inc.387,829$48.71M0.1%-7.8%0.265%
8/12/2025 Coldstream Capital Management Inc.3,246$408K0.0%-3.5%0.002%
8/12/2025 J. L. Bainbridge & Co. Inc.122,345$15.37M1.4%-1.7%0.083%
8/12/2025 Charles Schwab Investment Management Inc.1,075,757$135.10M0.0%+5.5%0.734%
8/12/2025 American Century Companies Inc.81,253$10.21M0.0%+34.4%0.055%
8/12/2025 Rhumbline Advisers300,147$37.70M0.0%+1.3%0.205%
8/12/2025 AlphaCore Capital LLC646$81K0.0%N/A0.000%
8/12/2025 Mufg Securities Americas Inc.3,247$408K0.0%+25.3%0.002%
8/12/2025 Franklin Resources Inc.229,010$28.76M0.0%-61.1%0.156%
8/12/2025 Legal & General Group Plc1,446,816$181.71M0.0%+12.6%0.987%
8/12/2025 MAI Capital Management776$97K0.0%+33.3%0.001%
8/12/2025 JPMorgan Chase & Co.1,002,502$125.90M0.0%-30.6%0.684%
8/12/2025 DNB Asset Management AS27,427$3.45M0.0%+2.2%0.019%
8/12/2025 Entropy Technologies LP7,840$985K0.1%-54.7%0.005%
8/12/2025 Magnetar Financial LLC2,484$312K0.0%-67.8%0.002%
8/12/2025 Swiss National Bank443,100$55.65M0.0%+7.8%0.302%
8/12/2025 Handelsbanken Fonder AB97,601$12.26M0.0%+21.6%0.067%
8/12/2025 Ensign Peak Advisors Inc35,761$4.49M0.0%-6.2%0.024%
8/11/2025 Seizert Capital Partners LLC66,245$8.32M0.4%+31.3%0.045%
8/11/2025 TD Waterhouse Canada Inc.816$106K0.0%-65.1%0.001%
8/11/2025 Primecap Management Co. CA15,802,122$1.98B1.6%-0.9%10.778%
8/11/2025 Traub Capital Management LLC1,910$240K0.2%N/A0.001%
8/11/2025 Vanguard Group Inc.17,290,651$2.17B0.0%+1.5%11.793%
8/11/2025 Frank Rimerman Advisors LLC5,368$674K0.0%N/A0.004%
8/11/2025 LSV Asset Management251,959$31.64M0.1%+4.1%0.172%
8/11/2025 Rothschild Investment LLC224$28K0.0%+64.7%0.000%
8/11/2025 Nomura Asset Management Co. Ltd.54,341$6.83M0.0%+1.0%0.037%
8/11/2025 Raiffeisen Bank International AG822$105K0.0%-47.7%0.001%
8/11/2025 Universal Beteiligungs und Servicegesellschaft mbH149,128$18.73M0.0%-5.3%0.102%
8/11/2025 Integrated Quantitative Investments LLC2,820$354K0.1%+8.5%0.002%
8/8/2025 Financial Gravity Companies Inc.295$37K0.0%N/A0.000%
8/8/2025 Summitry LLC2,651$333K0.0%N/A0.002%
8/8/2025 Letko Brosseau & Associates Inc.117,655$14.78M0.3%+1.8%0.080%
8/8/2025 Cornerstone Advisors LLC3,100$389K0.0%-13.9%0.002%
New law could create $3.7 trillion tsunami. (Ad)

During a meeting in Washington D.C., Jeff Brown discovered a bold initiative. He calls it “President Trump’s Project MAFA,” and it could soon return America to a “new” gold standard. The Trump administration, Wall Street, and Silicon Valley are all pushing it forward. The President himself calls the plan “incredible.” Already, it’s helping small plays jump as high as 300%, 318%, 520%, and even 600%.

You can watch it right here.
8/8/2025 Citizens Financial Group Inc. RI1,791$225K0.0%N/A0.001%
8/8/2025 Ontario Teachers Pension Plan Board5,786$727K0.0%-46.7%0.004%
8/8/2025 Intech Investment Management LLC4,531$569K0.0%-39.6%0.003%
8/8/2025 Cetera Investment Advisers12,888$1.62M0.0%+2.2%0.009%
8/8/2025 Creative Planning55,407$6.96M0.0%+108.5%0.038%
8/8/2025 SG Americas Securities LLC22,470$2.82M0.0%-96.8%0.015%
8/8/2025 Commonwealth of Pennsylvania Public School Empls Retrmt SYS35,937$4.51M0.0%+7.4%0.025%
8/8/2025 Banco Bilbao Vizcaya Argentaria S.A.114,872$14.43M0.1%-11.3%0.078%
8/8/2025 Candriam S.C.A.163,315$20.51M0.1%-12.6%0.111%
8/8/2025 Impax Asset Management Group plc33,526$4.21M0.0%-6.5%0.023%
(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, 1,007 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 849 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 28,539,382 shares in the last 24 months. This purchase volume represents approximately $4.25B in transactions.

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

Of the 399 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 Clearbridge Investments LLC ($693.24K).

How much institutional selling is happening at Biogen?

Institutional investors have sold a total of 18,336,095 shares in the last 24 months. This volume of shares sold represents approximately $2.74B in transactions.


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This page (NASDAQ:BIIB) was last updated on 8/14/2025 by MarketBeat.com Staff
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