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Biogen (BIIB) Institutional Ownership

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$197.77 +4.32 (+2.23%)
As of 12:18 PM Eastern
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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)
660
Total
Institutional Inflows
(last 12 months)
$4.01B
Number of
Institutional Sellers
(last 12 months)
376
Total
Institutional Outflows
(last 12 months)
$2.70B
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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
5/8/2026 PNC Financial Services Group Inc.39,484$7.24M0.0%+2.0%0.027%
5/8/2026 Oslo Pensjonsforsikring AS1,840$337K0.1%N/A0.001%
5/8/2026 Andra AP fonden52,000$9.53M0.1%+1,980.0%0.035%
5/8/2026 Wilkerson Advisory Group LLC593$109K0.0%+129.0%0.000%
5/8/2026 Cassaday & Co Wealth Management LLC218$40K0.0%N/A0.000%
5/8/2026 Convergence Investment Partners LLC13,557$2.49M0.4%+11.5%0.009%
5/7/2026 Meeder Asset Management Inc.1,071$196K0.0%+395.8%0.001%
5/7/2026 Meeder Advisory Services Inc.4,721$866K0.0%+1.2%0.003%
5/7/2026 Dimensional Fund Advisors LP1,079,119$197.88M0.0%+12.3%0.731%
5/7/2026 Parallel Advisors LLC4,367$801K0.0%+1.5%0.003%
5/7/2026 AlphaCentric Advisors LLC3,835$703K0.7%+5.7%0.003%
5/7/2026 KBC Group NV234,692$43.03M0.1%+339.5%0.159%
5/7/2026 SEB Asset Management AB41,869$7.68M0.0%N/A0.028%
5/7/2026 Swiss National Bank430,600$78.94M0.0%+7.2%0.292%
5/7/2026 AIA Group Ltd9,329$1.71M0.0%+310.1%0.006%
5/7/2026 Mediolanum International Funds Ltd6,054$1.14M0.0%N/A0.004%
5/6/2026 California Public Employees Retirement System340,903$62.50M0.0%+3.1%0.231%
5/6/2026 Kera Capital Partners Inc.1,723$316K0.0%+3.5%0.001%
5/6/2026 Assetmark Inc.2,690$493K0.0%+12.5%0.002%
5/6/2026 Bessemer Group Inc.3,127$573K0.0%+15.3%0.002%
5/6/2026 SteelPeak Wealth LLC2,704$496K0.0%N/A0.002%
5/6/2026 Independent Financial Group LLC3,328$610K0.0%N/A0.002%
5/5/2026 Wealthfront Advisers LLC15,679$2.87M0.0%+0.8%0.011%
5/5/2026 D.A. Davidson & CO.1,218$223K0.0%N/A0.001%
5/5/2026 Twin Capital Management Inc.4,430$812K0.1%N/A0.003%
5/5/2026 Bank of New York Mellon Corp788,523$144.56M0.0%-2.8%0.534%
5/5/2026 Blackhawk Capital Partners LLC2,426$445K0.2%+16.2%0.002%
5/5/2026 Illinois Municipal Retirement Fund89,303$16.37M0.2%+9.7%0.060%
5/5/2026 Sanctuary Advisors LLC5,617$1.03M0.0%+8.6%0.004%
5/5/2026 Sigma Planning Corp7,201$1.32M0.0%+37.3%0.005%
5/5/2026 Roberts Glore & Co. Inc. IL3,001$550K0.2%-2.6%0.002%
5/5/2026 Nwam LLC1,141$209K0.0%N/A0.001%
5/5/2026 Maryland State Retirement & Pension System7,095$1.30M0.0%-3.9%0.005%
5/4/2026 Canal Insurance CO20,000$3.67M0.8%N/A0.014%
5/4/2026 Emerald Mutual Fund Advisers Trust3,117$571K0.0%+26.5%0.002%
5/4/2026 Legacy Capital Group California Inc.2,901$532K0.2%N/A0.002%
5/4/2026 Empirical Financial Services LLC d.b.a. Empirical Wealth Management2,751$504K0.0%+24.0%0.002%
5/4/2026 State of Michigan Retirement System43,003$7.88M0.0%-0.2%0.029%
5/4/2026 Principal Financial Group Inc.187,059$34.29M0.0%+1.6%0.127%
5/4/2026 Chicago Partners Investment Group LLC4,598$874K0.0%+63.3%0.003%
5/4/2026 Triglav Investments D.O.O.12,428$2.28M0.2%+2.5%0.008%
5/4/2026 J. Safra Sarasin Holding AG4,998$915K0.0%-22.8%0.003%
5/4/2026 Tradewinds LLC.1,129$211K0.1%N/A0.001%
5/4/2026 Lifeworks Advisors LLC3,465$635K0.1%-11.9%0.002%
5/4/2026 Procyon Advisors LLC2,063$378K0.0%+47.7%0.001%
5/1/2026 Commonwealth of Pennsylvania Public School Empls Retrmt SYS34,186$6.27M0.0%+0.2%0.023%
5/1/2026 Citizens Financial Group Inc. RI2,346$430K0.0%+30.6%0.002%
5/1/2026 Fifth Third Bancorp32,716$6.00M0.0%+255.1%0.022%
5/1/2026 Simplicity Wealth LLC2,149$394K0.0%+10.1%0.001%
5/1/2026 Candriam S.C.A.381,768$69.99M0.4%+15.5%0.260%
5/1/2026 Sequoia Financial Advisors LLC9,953$1.83M0.0%-5.8%0.007%
4/30/2026 Kestra Advisory Services LLC5,810$1.07M0.0%+28.9%0.004%
4/30/2026 Sumitomo Mitsui Trust Group Inc.356,291$65.32M0.0%-3.9%0.243%
4/30/2026 Resona Asset Management Co. Ltd.46,261$8.52M0.0%+2.4%0.032%
4/30/2026 Munich Reinsurance Co Stock Corp in Munich23,942$4.39M0.1%N/A0.016%
4/30/2026 Oregon Public Employees Retirement Fund16,841$3.09M0.0%+0.6%0.011%
4/29/2026 Aljian Capital Management LLC2,540$466K0.1%+5.2%0.002%
4/29/2026 Cairn Investment Group Inc.8,043$1.48M0.7%-0.7%0.005%
4/29/2026 Meitav Investment House Ltd.20,972$3.85M0.0%-37.3%0.014%
4/29/2026 Resonant Capital Advisors LLC1,874$344K0.0%+11.3%0.001%
4/29/2026 Swedbank AB289,840$53.14M0.1%+25.1%0.197%
4/29/2026 Integrated Advisors Network LLC1,767$324K0.0%-16.0%0.001%
4/28/2026 Collaborative Fund Advisors LLC1,327$243K0.2%N/A0.001%
4/28/2026 Kathmere Capital Management LLC6,643$1.22M0.1%+38.7%0.005%
4/28/2026 Whittier Trust Co.699$120K0.0%-8.7%0.000%
4/28/2026 Bogart Wealth LLC215$39K0.0%-57.8%0.000%
4/28/2026 DGS Capital Management LLC2,886$529K0.1%+32.3%0.002%
4/28/2026 V Square Quantitative Management LLC4,358$799K0.1%+5.8%0.003%
4/28/2026 QRG Capital Management Inc.33,002$6.05M0.1%+769.6%0.022%
4/27/2026 HB Wealth Management LLC5,681$1.04M0.0%+21.6%0.004%
4/27/2026 PFG Investments LLC1,568$287K0.0%N/A0.001%
4/27/2026 World Investment Advisors6,082$1.12M0.0%-9.7%0.004%
4/27/2026 Turtle Creek Wealth Advisors LLC1,546$283K0.0%+5.7%0.001%
4/27/2026 New York State Teachers Retirement System111,303$20.41M0.0%+0.1%0.076%
4/27/2026 Private Advisor Group LLC4,649$852K0.0%-23.9%0.003%
4/27/2026 Leonteq Securities AG26,454$4.85M0.2%-5.4%0.018%
4/27/2026 Fjarde AP Fonden Fourth Swedish National Pension Fund39,303$7.21M0.0%+48.0%0.027%
4/27/2026 Proathlete Wealth Management LLC1,944$356K0.1%-7.8%0.001%
4/27/2026 Elevation Point Wealth Partners LLC3,724$683K0.0%N/A0.003%
4/27/2026 Platform Technology Partners1,201$220K0.0%N/A0.001%
4/27/2026 Fideuram Intesa Sanpaolo Private Banking S.P.A.15,973$2.93M0.1%-15.4%0.011%
4/25/2026 Keybank National Association OH8,834$1.62M0.0%+4.9%0.006%
4/24/2026 Root Financial Partners LLC341$63K0.0%+84.3%0.000%
4/24/2026 USS Investment Management Ltd37,217$6.82M0.0%+8.8%0.025%
4/24/2026 IFM Investors Pty Ltd38,521$7.06M0.1%-3.3%0.026%
4/23/2026 Premier Path Wealth Partners LLC3,523$646K0.1%-38.5%0.002%
4/23/2026 Forum Financial Management LP1,890$346K0.0%-67.9%0.001%
4/23/2026 Lansforsakringar Fondforvaltning AB publ 47,807$8.76M0.0%-1.9%0.033%
4/22/2026 Adams Diversified Equity Fund Inc.100,300$18.39M0.6%+126.4%0.068%
4/22/2026 Pictet Asset Management Holding SA913,328$168.27M0.2%-3.6%0.622%
4/22/2026 Sterling Capital Management LLC5,136$942K0.0%-40.7%0.003%
4/22/2026 Econ Financial Services Corp4,397$806K0.4%+11.4%0.003%
4/21/2026 WMS Group LLC1,311$240K0.3%-15.4%0.001%
4/21/2026 Poehling Capital Management INC.1,144$210K0.0%N/A0.001%
4/21/2026 Aaron Wealth Advisors LLC1,185$217K0.0%N/A0.001%
4/21/2026 Louisiana State Employees Retirement System7,500$1.38M0.0%N/A0.005%
4/21/2026 Contravisory Investment Management Inc.44,677$8.19M1.7%N/A0.030%
4/20/2026 Ritholtz Wealth Management34,943$6.41M0.1%+23.1%0.024%
4/20/2026 Friedenthal Financial5,930$1.09M0.5%N/A0.004%
4/20/2026 Blue Trust Inc.560$103K0.0%-33.3%0.000%


BIIB Institutional Ownership - Frequently Asked Questions

During the previous two years, 1,031 institutional investors and hedge funds held shares of Biogen. The most heavily invested institutionals were Vanguard Group Inc. ($3.07B), Primecap Management Co. CA ($2.60B), State Street Corp ($1.26B), Geode Capital Management LLC ($736.44M), International Assets Investment Management LLC ($695.87M), Wellington Management Group LLP ($624.99M), and Norges Bank ($464.41M).Learn more on Biogen's institutional investors.

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

Of the 905 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 ($7.23M), Pacer Advisors Inc. ($2.78M), AQR Capital Management LLC ($1.75M), Boston Partners ($1.72M), Van ECK Associates Corp ($967.52K), Fred Alger Management LLC ($810.93K), and Invesco Ltd. ($788.39K).

Institutional investors have bought a total of 26,319,261 shares in the last 24 months. This purchase volume represents approximately $4.01B in transactions.

Of the 376 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: Wellington Management Group LLP ($1.51M), Primecap Management Co. CA ($1.19M), Price T Rowe Associates Inc. MD ($955.91K), Amundi ($782.03K), Invesco Ltd. ($762.69K), T. Rowe Price Investment Management Inc. ($728.52K), and SG Americas Securities LLC ($697.49K).

Institutional investors have sold a total of 17,903,124 shares in the last 24 months. This volume of shares sold represents approximately $2.70B in transactions.


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This page (NASDAQ:BIIB) was last updated on 5/11/2026 by MarketBeat.com Staff.
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