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Biogen (BIIB) Institutional Ownership

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$227.22 -1.47 (-0.64%)
As of 01:11 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)
597
Total
Institutional Inflows
(last 12 months)
$11.39B
Number of
Institutional Sellers
(last 12 months)
326
Total
Institutional Outflows
(last 12 months)
$2.25B
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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
9/23/2026QRG Capital Management Inc.48,819$10.55M0.1%+47.9%0.033%
9/23/2026Envestnet Portfolio Solutions Inc.1,738$376K0.0%+20.5%0.001%
9/22/2026Andra AP fonden50,100$10.83M0.1%-3.7%0.034%
9/16/2026IKE Capital LLC2,794$604K0.3%-12.5%0.002%
9/9/2026Sequoia Financial Advisors LLC9,388$2.03M0.0%-5.7%0.006%
9/9/2026Tidal Investments LLC63,842$13.79M0.0%+9.0%0.043%
9/9/2026National Pension Service406,064$87.73M0.1%+1.1%0.275%
9/9/2026Cidel Asset Management Inc.1,952$422K0.0%-8.3%0.001%
9/9/2026Integrated Wealth Concepts LLC9,426$2.04M0.0%+23.8%0.006%
9/9/2026NewEdge Advisors LLC15,037$3.25M0.0%+15.4%0.010%
9/9/2026IFP Advisors Inc1,479$320K0.0%+28.5%0.001%
9/9/2026Baird Financial Group Inc.15,360$3.32M0.0%+264.6%0.010%
9/9/2026Beacon Investment Advisory Services Inc.12,229$2.64M0.1%-0.7%0.008%
9/8/2026Allworth Financial LP8,033$1.74M0.0%+90.8%0.005%
9/8/2026Arizona State Retirement System42,077$9.09M0.0%+5.6%0.028%
9/8/2026Waverly Advisors LLC3,678$795K0.0%+16.7%0.002%
9/8/2026Empirical Finance LLC5,240$1.13M0.0%+3.4%0.004%
9/8/2026Nykredit A S37,134$8.02M0.0%N/A0.025%
9/2/2026Range Advisory LLC929$201K0.0%N/A0.001%
8/27/2026Corient Private Wealth LP42,397$9.16M0.0%+14.7%0.029%
8/26/2026Amundi1,516,831$327.73M0.1%+91.8%1.027%
8/26/2026HighTower Advisors LLC47,099$10.18M0.0%-5.5%0.032%
8/25/2026Advus Financial Partners LLC2,566$554K0.1%-2.1%0.002%
8/25/2026Groupe la Francaise519$112K0.0%N/A0.000%
8/23/2026Wedmont Private Capital3,012$600K0.0%+3.6%0.002%
8/23/2026HB Wealth Management LLC6,176$1.33M0.0%+8.7%0.004%
8/23/2026Saudi Central Bank10,273$2.22M0.0%+89.7%0.007%
8/22/2026Noble Wealth Partners LLC1,340$290K0.3%N/A0.001%
8/22/2026Syon Capital LLC3,492$754K0.0%+11.6%0.002%
8/22/2026Premier Path Wealth Partners LLC2,786$602K0.1%-20.9%0.002%
8/22/2026NEOS Investment Management LLC23,734$5.13M0.0%+13.9%0.016%
8/21/2026Mason & Associates Inc1,038$224K0.0%N/A0.001%
8/21/2026Continuum Advisory LLC304$66K0.0%N/A0.000%
8/21/2026Nykredit A S41,734$9.02M0.0%N/A0.028%
8/21/2026B. Metzler seel. Sohn & Co. AG12,258$2.65M0.0%-58.8%0.008%
8/21/2026Investors Research Corp1,641$355K0.1%-11.3%0.001%
8/20/2026Proficio Capital Partners LLC2,701$584K0.0%N/A0.002%
8/20/2026Nwam LLC2,553$552K0.0%+123.8%0.002%
8/20/2026Rehmann Capital Advisory Group1,236$267K0.0%+6.1%0.001%
8/20/2026JNBA Financial Advisors422$91K0.0%-29.2%0.000%
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8/20/2026Sigma Planning Corp6,193$1.34M0.0%-14.0%0.004%
8/20/2026Alyeska Investment Group L.P.932,374$201.45M0.5%+15.8%0.631%
8/20/2026Northwestern Mutual Wealth Management Co.7,299$1.58M0.0%+3.6%0.005%
8/20/2026Wedbush Securities Inc.1,164$251K0.0%+5.1%0.001%
8/20/2026Greenleaf Trust6,491$1.40M0.0%+1.9%0.004%
8/19/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC1,255,168$271.19M0.0%-8.9%0.850%
8/19/2026New Mexico Educational Retirement Board7,224$1.56M0.0%+5.9%0.005%
8/19/2026Royal London Asset Management Ltd.64,751$13.99M0.0%+0.8%0.044%
8/19/2026Mufg Securities Americas Inc.4,447$961K0.0%+9.5%0.003%
8/19/2026Investors Asset Management of Georgia Inc. GA ADV1,032$223K0.1%N/A0.001%
8/19/2026Van ECK Associates Corp98,109$21.20M0.0%-90.9%0.066%
8/19/2026Nissay Asset Management Corp Japan185,301$40.04M0.2%+522.6%0.125%
8/19/2026Wellington Management Group LLP3,117,469$673.56M0.1%+5.3%2.110%
8/19/2026Kingsview Wealth Management LLC1,171$253K0.0%N/A0.001%
8/18/2026Beacon Pointe Advisors LLC4,544$981K0.0%N/A0.003%
8/18/2026Pin Oak Investment Advisors Inc.821$177K0.1%N/A0.001%
8/18/2026Livforsakringsbolaget Skandia Omsesidigt1,330$287K0.0%N/A0.001%
8/18/2026Rakuten Investment Management Inc.24,097$5.22M0.0%N/A0.016%
8/18/2026Palo Alto Investors LP140,279$30.31M0.0%N/A0.095%
8/18/2026Empowered Funds LLC21,948$4.74M0.0%N/A0.015%
8/18/2026United Capital Financial Advisors LLC7,017$1.52M0.0%N/A0.005%
8/18/2026Jefferies Financial Group Inc.27,463$5.93M0.0%N/A0.019%
8/18/2026Public Employees Retirement System of Ohio45,608$9.85M0.0%N/A0.031%
8/17/2026Proficio Capital Partners LLC2,701$584K0.0%N/A0.002%
8/17/2026Pure Financial Advisors LLC1,438$311K0.0%N/A0.001%
8/17/2026Corient Private Wealth LP163,315$10.56M0.0%N/A0.111%
8/17/2026Parallax Volatility Advisers L.P.2,291$495K0.0%N/A0.002%
8/17/2026Artia Global Partners LP18,437$3.98M0.7%N/A0.012%
8/17/2026Bank of America Corp DE1,116,228$241.17M0.0%N/A0.755%
8/15/2026Freestone Grove Partners LP83,853$18.12M0.1%N/A0.057%
8/15/2026Caisse de depot et placement du Quebec510,194$110.23M0.2%N/A0.345%
8/15/2026Man Group plc196,222$42.40M0.1%N/A0.133%
8/15/2026Roberts Glore & Co. Inc. IL3,001$648K0.2%N/A0.002%
8/15/2026Jupiter Topco LLC19,831$4.28M0.0%N/A0.013%
8/14/2026ADAR1 Capital Management LLC17,900$3.87M0.2%N/A0.012%
8/14/2026EFG International AG4,582$990K0.0%N/A0.003%
8/14/2026Primecap Management Co. CA15,154,606$3.27B1.9%N/A10.257%
8/14/2026Canada Pension Plan Investment Board13,602$2.94M0.0%N/A0.009%
8/14/2026Legal & General Group Plc1,493,289$322.64M0.1%N/A1.011%
8/14/2026The Manufacturers Life Insurance Company90,784$19.62M0.0%N/A0.061%
8/14/2026Aberdeen Wealth Management LLC265$57K0.0%N/A0.000%
8/14/2026Trail Ridge Investment Advisors LLC1,807$390K0.2%N/A0.001%
8/13/2026Cibc World Market Inc.7,424$1.60M0.0%N/A0.005%
8/13/2026OMERS ADMINISTRATION Corp23,421$5.06M0.0%N/A0.016%
8/13/2026Osmosis Investment Management UK Ltd3,629$784K0.0%N/A0.002%
8/13/2026Sanctuary Advisors LLC5,838$1.26M0.0%N/A0.004%
8/13/2026Polymer Capital Management HK LTD38,665$8.35M0.4%N/A0.026%
8/13/2026Connor Clark & Lunn Investment Management Ltd.3,948$853K0.0%N/A0.003%
8/13/2026Bank of Nova Scotia16,446$3.55M0.0%N/A0.011%
8/12/2026Elevation Point Wealth Partners LLC3,519$760K0.0%N/A0.002%
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8/12/2026Daiichi Life Insurance Co. Ltd.5,397$1.17M0.0%N/A0.004%
8/12/2026Commerce Bank11,672$2.52M0.0%N/A0.008%
8/12/2026Northwestern Mutual Wealth Management Co.7,299$1.58M0.0%N/A0.005%
8/12/2026Evolve Private Wealth LLC2,032$439K0.0%N/A0.001%
8/12/2026Westpac Banking Corp1,843$398K0.0%N/A0.001%
8/12/2026TRB Wealth Management LLC1,097$237K0.0%N/A0.001%
8/12/2026Sumitomo Life Insurance Co.1,648$356K0.0%N/A0.001%
8/12/2026Korea Investment CORP33,574$7.25M0.0%N/A0.023%
8/12/2026EP Wealth Advisors LLC2,024$437K0.0%N/A0.001%
8/12/2026Ieq Capital LLC132,142$28.55M0.1%N/A0.089%


BIIB Institutional Ownership - Frequently Asked Questions

During the previous two years, 1,013 institutional investors and hedge funds held shares of Biogen. The most heavily invested institutionals were BlackRock Inc. ($3.45B), Primecap Management Co. CA ($3.27B), Vanguard Group Inc. ($3.07B), State Street Corp ($1.26B), Geode Capital Management LLC ($736.44M), International Assets Investment Management LLC ($695.87M), and Wellington Management Group LLP ($673.56M).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 906 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: BlackRock Inc. ($15.99M), Primecap Management Co. CA ($15.15M), Norges Bank ($7.23M), Pacer Advisors Inc. ($2.78M), Legal & General Group Plc ($1.80M), AQR Capital Management LLC ($1.74M), and Boston Partners ($1.72M).

Institutional investors have bought a total of 56,843,127 shares in the last 24 months. This purchase volume represents approximately $11.39B in transactions.

Of the 326 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 ($1.25M), Primecap Management Co. CA ($1.04M), Van ECK Associates Corp ($990.95K), Invesco Ltd. ($762.69K), Renaissance Technologies LLC ($761.01K), Pacer Advisors Inc. ($625.48K), and Man Group plc ($578.74K).

Institutional investors have sold a total of 13,263,493 shares in the last 24 months. This volume of shares sold represents approximately $2.25B in transactions.


Related Companies

Institutional ownership data for NASDAQ:BIIB is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/23/2026. New 13F filings are added each quarter as they're published.
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