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American Superconductor (AMSC) Institutional Ownership

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$33.53 +0.08 (+0.25%)
As of 09:30 AM Eastern
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Institutional Ownership Changes (13F Filings) for American Superconductor (NASDAQ:AMSC)

Current
Institutional Ownership
Percentage
52.28%
Number of
Institutional Buyers
(last 12 months)
182
Total
Institutional Inflows
(last 12 months)
$370.24M
Number of
Institutional Sellers
(last 12 months)
89
Total
Institutional Outflows
(last 12 months)
$192.33M
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AMSC Institutional Buying and Selling by Quarter

American Superconductor Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
7/9/2026 Hennion & Walsh Asset Management Inc.46,020$1.91M0.1%+38.0%0.095%
7/8/2026 Assenagon Asset Management S.A.6,224$258K0.0%-66.7%0.013%
7/7/2026 Central Pacific Bank Trust Division16,266$675K0.1%+77.3%0.034%
6/2/2026Optiver Holding B.V.1,882$64K0.0%N/A0.004%
5/19/2026Bank of America Corp DE209,451$7.09M0.0%+26.5%0.440%
5/18/2026Amundi58,169$1.97M0.0%+25.6%0.122%
5/18/2026California State Teachers Retirement System57,016$1.93M0.0%+12.0%0.120%
5/18/2026ROI Financial Advisors LLC10,731$363K0.2%+5.9%0.023%
5/18/2026Royal Bank of Canada31,336$1.06M0.0%-30.6%0.066%
5/16/2026The Manufacturers Life Insurance Company 20,828$705K0.0%+2.0%0.044%
5/16/2026Lazard Asset Management LLC56,452$1.91M0.0%N/A0.119%
5/14/2026Arrowstreet Capital Limited Partnership446,752$15.12M0.0%-34.6%0.938%
5/14/2026Sei Investments Co.224,436$7.60M0.0%+184.8%0.471%
5/14/2026State of Wyoming4,624$157K0.0%+53.1%0.010%
5/13/2026Cetera Investment Advisers10,023$339K0.0%-12.3%0.021%
5/13/2026First Trust Advisors LP778,268$26.34M0.0%+14.0%1.635%
5/7/2026Dimensional Fund Advisors LP658,297$22.28M0.0%+21.8%1.383%
5/7/2026 Morgan Dempsey Capital Management LLC8,510$288K0.1%N/A0.018%
5/6/2026Allspring Global Investments Holdings LLC149,601$4.88M0.0%-26.9%0.314%
5/5/2026 D.A. Davidson & CO.6,794$230K0.0%-3.1%0.014%
5/5/2026Bank of New York Mellon Corp134,790$4.56M0.0%-1.6%0.283%
5/4/2026Emerald Mutual Fund Advisers Trust438,875$14.86M0.7%+0.8%0.922%
5/1/2026 Kornitzer Capital Management Inc. KS34,973$1.18M0.0%-3.3%0.073%
4/28/2026 Stephens Investment Management Group LLC308,515$10.44M0.1%+77.1%0.648%
4/27/2026 PFG Investments LLC15,830$536K0.0%N/A0.033%
4/25/2026 Strs Ohio17,700$599K0.0%-16.5%0.037%
4/24/2026 Acorn Financial Advisory Services Inc. ADV6,004$203K0.0%N/A0.013%
4/22/2026Janney Montgomery Scott LLC56,946$1.93M0.0%+22.8%0.120%
4/22/2026 Pictet Asset Management Holding SA7,413$251K0.0%N/A0.016%
4/20/2026 Assenagon Asset Management S.A.18,679$632K0.0%+110.1%0.039%
4/17/2026 Campbell Newman Asset Management Inc.64,337$2.18M0.2%+1.9%0.135%
4/16/2026SG Americas Securities LLC35,385$1.20M0.0%-50.2%0.074%
4/16/2026 Diversified Trust Co13,936$472K0.0%+13.2%0.029%
3/20/2026Hsbc Holdings PLC11,582$334K0.0%+29.3%0.024%
3/17/2026Rockefeller Capital Management L.P.1,563$45K0.0%+45.9%0.003%
3/13/2026Fund Advisors of America Inc FL11,053$318K0.3%N/A0.023%
3/3/2026Caitong International Asset Management Co. Ltd2,092$60K0.0%N/A0.004%
2/19/2026Invesco Ltd.386,152$11.11M0.0%+35.3%0.811%
2/18/2026Alpine Woods Capital Investors LLC23,026$663K0.2%N/A0.048%
2/18/2026Skyview Financial Group LLC23,038$663K0.7%N/A0.048%
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2/18/2026Mackenzie Financial Corp40,245$1.16M0.0%+17.4%0.085%
2/18/2026XTX Topco Ltd10,551$304K0.0%N/A0.022%
2/18/2026Voloridge Investment Management LLC26,695$768K0.0%-84.4%0.056%
2/18/2026Twinbeech Capital LP52,221$1.50M0.1%N/A0.110%
2/18/2026Oxford Asset Management LLP21,186$610K0.2%+271.5%0.044%
2/18/2026Millennium Management LLC78,088$2.25M0.0%-36.3%0.164%
2/18/2026Man Group plc36,094$1.04M0.0%+124.0%0.076%
2/18/2026Janus Henderson Group PLC20,134$580K0.0%-48.8%0.042%
2/18/2026Engineers Gate Manager LP36,587$1.05M0.0%-62.5%0.077%
2/18/2026Atreides Management LP1,044,193$30.05M0.4%+35.3%2.193%
2/18/2026Balyasny Asset Management L.P.152,795$4.40M0.0%N/A0.321%
2/18/2026Boothbay Fund Management LLC13,990$403K0.0%N/A0.029%
2/17/2026Freestone Grove Partners LP46,128$1.33M0.0%N/A0.097%
2/17/2026Schonfeld Strategic Advisors LLC31,166$897K0.0%+93.5%0.065%
2/17/2026PDT Partners LLC9,732$280K0.0%N/A0.020%
2/17/2026AQR Capital Management LLC145,965$4.20M0.0%-13.5%0.307%
2/17/2026Cetera Investment Advisers11,425$329K0.0%-83.8%0.024%
2/17/2026Amundi46,316$1.33M0.0%+11.0%0.097%
2/17/2026Price T Rowe Associates Inc. MD274,844$7.91M0.0%-30.7%0.577%
2/17/2026Russell Investments Group Ltd.35,065$1.01M0.0%+56.6%0.074%
2/17/2026State of Wisconsin Investment Board11,227$323K0.0%+75.3%0.024%
2/17/2026ExodusPoint Capital Management LP70,751$2.04M0.0%N/A0.149%
2/17/2026Royal Bank of Canada45,133$1.30M0.0%+4.1%0.095%
2/17/2026Graham Capital Management L.P.10,066$290K0.0%N/A0.021%
2/17/2026Rice Hall James & Associates LLC47,114$1.36M0.1%-22.4%0.099%
2/16/2026Truvestments Capital LLC15,450$445K0.1%+14.2%0.032%
2/16/2026Verition Fund Management LLC37,200$1.07M0.0%-47.7%0.078%
2/16/2026Panagora Asset Management Inc.254,785$7.33M0.0%+25.8%0.535%
2/16/2026Mariner LLC20,563$592K0.0%+55.5%0.043%
2/16/2026Entropy Technologies LP13,457$387K0.0%+29.4%0.028%
2/16/2026Barclays PLC73,805$2.12M0.0%+18.0%0.155%
2/13/2026 Kestra Advisory Services LLC6,923$199K0.0%-30.2%0.015%
2/13/2026The Manufacturers Life Insurance Company 20,424$588K0.0%-9.7%0.043%
2/13/2026AWM Investment Company Inc.754,220$21.71M2.1%+1.2%1.584%
2/13/2026Essex Investment Management Co. LLC215,154$6.19M0.9%-12.4%0.452%
2/13/2026First Trust Advisors LP682,967$19.66M0.0%+49.0%1.435%
2/13/2026Headlands Technologies LLC34,308$987K0.1%N/A0.072%
2/13/2026Charles Schwab Investment Management Inc.387,507$11.15M0.0%-0.2%0.814%
2/13/2026 Police & Firemen s Retirement System of New Jersey11,442$329K0.0%-5.2%0.024%
2/13/2026State Street Corp1,192,093$34.31M0.0%+4.9%2.504%
2/13/2026Dynamic Technology Lab Private Ltd69,225$1.99M0.5%N/A0.145%
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC77,207$2.22M0.0%-6.6%0.162%
2/13/2026ROI Financial Advisors LLC10,133$292K0.2%+7.6%0.021%
2/12/2026Federation des caisses Desjardins du Quebec2,625$76K0.0%+275.0%0.006%
2/12/2026HRT Financial LP69,724$2.01M0.0%+1,025.7%0.146%
2/12/2026Brooklyn Investment Group13,863$405K0.0%N/A0.029%
2/12/2026 Commonwealth Equity Services LLC10,097$291K0.0%-27.4%0.021%
2/12/2026Renaissance Technologies LLC139,989$4.03M0.0%-56.8%0.294%
2/12/2026Dimensional Fund Advisors LP540,253$15.55M0.0%+14.6%1.135%
2/12/2026Ensign Peak Advisors Inc4,550$131K0.0%-48.6%0.010%
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2/12/2026Steward Partners Investment Advisory LLC5,625$162K0.0%+114.3%0.012%
2/12/2026 New York State Common Retirement Fund70,400$2.03M0.0%+2.5%0.148%
2/12/2026 Campbell & CO Investment Adviser LLC59,952$1.73M0.1%N/A0.126%
2/12/2026 Alps Advisors Inc.62,242$1.79M0.0%-6.2%0.131%
2/12/2026Swiss National Bank89,100$2.56M0.0%+5.3%0.187%
2/12/2026Principal Securities Inc.8,636$249K0.0%+8.7%0.018%
2/12/2026Polen Capital Management LLC23,565$678K0.0%-50.2%0.049%
2/12/2026Nuveen LLC960,968$27.66M0.0%+16.3%2.018%
2/11/2026Janney Montgomery Scott LLC46,381$1.34M0.0%+1.4%0.097%
2/11/2026Deutsche Bank AG38,723$1.11M0.0%+7.2%0.081%


AMSC Institutional Ownership - Frequently Asked Questions

During the previous two years, 269 institutional investors and hedge funds held shares of American Superconductor. The most heavily invested institutionals were Vanguard Group Inc. ($101.50M), Baillie Gifford & Co. ($43.37M), Hood River Capital Management LLC ($42.89M), Oberweis Asset Management Inc. ($39.54M), State Street Corp ($34.31M), Geode Capital Management LLC ($31.40M), and Emerald Advisers LLC ($30.95M).Learn more on American Superconductor's institutional investors.

52.28% of American Superconductor's stock is owned by institutional investors. Learn more on AMSC's institutional investor holdings.

Of the 244 institutional investors that purchased American Superconductor's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Atreides Management LP ($1.38M), Vanguard Group Inc. ($1.14M), Arrowstreet Capital Limited Partnership ($1.06M), Wellington Management Group LLP ($922.46K), Nuveen LLC ($913.38K), UBS Group AG ($550.83K), and Emerald Advisers LLC ($521.18K).

Institutional investors have bought a total of 9,107,762 shares in the last 24 months. This purchase volume represents approximately $370.24M in transactions.

Of the 89 institutional investors that sold American Superconductor's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Royce & Associates LP ($454.15K), Goldman Sachs Group Inc. ($391.82K), Atreides Management LP ($332.96K), Qube Research & Technologies Ltd ($279.29K), Arrowstreet Capital Limited Partnership ($236.45K), Renaissance Technologies LLC ($184K), and Millennium Management LLC ($173.72K).

Institutional investors have sold a total of 4,370,045 shares in the last 24 months. This volume of shares sold represents approximately $192.33M in transactions.


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This page (NASDAQ:AMSC) was last updated on 8/5/2026 by MarketBeat.com Staff.
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