Free Trial
→ Small Colorado Company (Backed by Sam Altman) Could Save U.S. Power Grid (From Altimetry) (Ad)tc pixel Free AMSC Stock Alerts

American Superconductor (AMSC) Institutional Ownership

American Superconductor logo
$30.01 0.00 (0.00%)
Closing price 10/2/2026 04:00 PM Eastern
Extended Trading
$30.14 +0.13 (+0.44%)
As of 10/2/2026 07:55 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 Massive. Learn more.
Compare

Institutional Ownership Changes (13F Filings) for American Superconductor (NASDAQ:AMSC)

Current
Institutional Ownership
Percentage
52.28%
Number of
Institutional Buyers
(last 12 months)
158
Total
Institutional Inflows
(last 12 months)
$351.95M
Number of
Institutional Sellers
(last 12 months)
79
Total
Institutional Outflows
(last 12 months)
$172.39M
Get AMSC Insider Trade Alerts

Want to know when executives and insiders are buying or selling American Superconductor stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily.

Subscribe Now
SMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy.
Skip Chart & View Institutional Buying and Selling Data

AMSC Institutional Buying and Selling by Quarter

American Superconductor Major Shareholders & Ownership History

Export
Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026Tidal Investments LLC101,341$4.21M0.0%+133.7%0.209%
9/9/2026Integrated Wealth Concepts LLC3,839$159K0.0%N/A0.008%
9/9/2026Baird Financial Group Inc.157,203$6.53M0.0%-3.7%0.325%
9/8/2026Nykredit A S1,111$46K0.0%N/A0.002%
8/27/2026Corient Private Wealth LP5,372$223K0.0%N/A0.011%
8/21/2026Round Rock Advisors LLC26,431$1.10M0.1%+29.9%0.055%
8/21/2026Nykredit A S1,111$46K0.0%N/A0.002%
8/19/2026Wellington Management Group LLP85,244$3.54M0.0%N/A0.176%
8/15/2026AWM Investment Company Inc.951,604$39.50M3.4%N/A1.965%
8/13/2026Ranger Investment Management L.P.405,266$16.82M1.1%N/A0.837%
8/13/2026Globeflex Capital L P14,510$602K0.1%N/A0.030%
7/9/2026Hennion & Walsh Asset Management Inc.46,020$1.91M0.1%+38.0%0.095%
7/8/2026Assenagon Asset Management S.A.6,224$258K0.0%-66.7%0.013%
7/7/2026Central 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 Company20,828$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%
5/7/2026Morgan 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%
5/5/2026D.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%
5/1/2026Kornitzer Capital Management Inc. KS34,973$1.18M0.0%-3.3%0.073%
4/28/2026Stephens Investment Management Group LLC308,515$10.44M0.1%+77.1%0.648%
4/27/2026PFG Investments LLC15,830$536K0.0%N/A0.033%
4/25/2026Strs Ohio17,700$599K0.0%-16.5%0.037%
4/24/2026Acorn 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%
4/22/2026Pictet Asset Management Holding SA7,413$251K0.0%N/A0.016%
Iran War Shock: What I Was Told In That Private Meeting (Ad)

You’re Being LIED To About The Iran War Forget EVERYTHING you’ve heard about the Iran war. Especially the reasons why we’re bombing the country.tc pixel

Because THIS is the real reason.
4/20/2026Assenagon Asset Management S.A.18,679$632K0.0%+110.1%0.039%
4/17/2026Campbell 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%
4/16/2026Diversified 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%
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%
2/13/2026Kestra 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%
2/13/2026Police & Firemen s Retirement System of New Jersey11,442$329K0.0%-5.2%0.024%
The $15 Gold Fund That Pays Up to $1,152/Month (Ad)

Gold is hitting record highs, but most investors are leaving income on the table. A $15 fund is quietly paying out up to $1,152 a month to regular investors - no mining stocks, no options, no physical metal required. Chief Income Strategist Tim Plaehn calls it a breakthrough strategy that transforms gold's rally into reliable monthly payouts. The next distribution is just days away.tc pixel

Discover the gold income fund before the next payout date
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%
2/12/2026Commonwealth 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%


AMSC Institutional Ownership - Frequently Asked Questions

During the previous two years, 270 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), AWM Investment Company Inc. ($39.50M), State Street Corp ($34.31M), and Geode Capital Management LLC ($31.40M).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 242 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 ($1.01M), AWM Investment Company Inc. ($1.01M), Nuveen LLC ($913.38K), and UBS Group AG ($550.83K).

Institutional investors have bought a total of 8,408,060 shares in the last 24 months. This purchase volume represents approximately $351.95M in transactions.

Of the 79 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), Arrowstreet Capital Limited Partnership ($236.45K), Renaissance Technologies LLC ($184K), Millennium Management LLC ($173.72K), and Legal & General Group Plc ($157.48K).

Institutional investors have sold a total of 3,825,563 shares in the last 24 months. This volume of shares sold represents approximately $172.39M in transactions.


Related Companies

Institutional ownership data for NASDAQ:AMSC is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
From Our Partners
The $15 Gold Fund That Pays Up to $1,152/Month
Gold is hitting record highs, but most investors are leaving income on the table. A $15 fund is quietly paying...
Investors Alley | Sponsoredtc pixel
ALERT: Drop these 5 stocks before the market opens tomorrow!
The Wall Street Journal is already raising the alarm about a potential market crash, and Weiss Ratings researc...
Weiss Ratings | Sponsoredtc pixel
Small Colorado Company (Backed by Sam Altman) Could Save U.S. Power Grid
A small Colorado company has secured rights to technology that could prevent the U.S. public power grid from c...
Altimetry | Sponsoredtc pixel
Trump's New Dollar
Porter Stansberry says President Trump has signed an executive order initiating what he calls a full U.S. doll...
Porter & Company | Sponsoredtc pixel
They didn't warn anyone in 1971. This time someone is warning you.
On August 15, 1971, Nixon interrupted prime-time television and ended the gold standard in 15 minutes - no deb...
Reagan Gold Group | Sponsoredtc pixel
Ready to give options a try? Your first trade (Ticker included) -INSIDE
Tired of trying tactic after tactic when it comes to options trades... only to be met with market noise and st...
Base Camp Trading | Sponsoredtc pixel
The end may be near for these iconic stocks
Marc Chaikin, founder of Chaikin Analytics, says two forces - AI disruption and fracturing global trade - are ...
Chaikin Analytics | Sponsoredtc pixel
Louis Navellier: My #1 AI stock for 2026 (name & ticker inside)
Louis Navellier's Stock Grader system helped him flag Nvidia before its 82,000% run and has identified the top...
InvestorPlace | Sponsoredtc pixel