American Superconductor Ownership | Who Owns American Superconductor?


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American Superconductor Ownership Summary


American Superconductor is owned by 78.12% institutional investors, 3.44% insiders, and 18.44% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 8.96% of AMSC shares. Vanguard MStar Total Stk Mkt Idx Invest is the top mutual fund, with 2.98% of its assets in American Superconductor shares.

AMSC Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockAmerican Superconductor78.12%3.44%18.44%
SectorIndustrials Stocks 67.76%16.49%15.75%
IndustryElectrical Equipment Stocks53.83%15.82%30.35%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock funding, inc. /de4.10M8.96%$170.00M
Blackrock2.54M8.53%$59.50M
Vanguard group3.53M8.02%$101.50M
Vanguard capital management2.03M4.45%$84.44M
Barrow hanley mewhinney & strauss1.70M3.73%$70.73M
Ubs group1.43M3.13%$59.32M
State street1.36M2.97%$56.38M
Goldman sachs group1.29M2.83%$53.72M
Geode capital management1.24M2.72%$51.62M
First trust advisors lp1.17M2.56%$48.50M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Awm investment company951.60K3.43%$39.50M
Heights capital management340.10K3.33%$12.48M
Palisades investment partners156.72K1.85%$6.51M
Telemark asset management600.00K1.80%$24.91M
Essex investment management221.93K1.21%$9.21M
Ranger investment management405.27K1.06%$16.82M
Covestor41.35K0.99%$1.72M
Crawford fund management160.00K0.94%$3.74M
Lumbard & kellner74.14K0.93%$3.08M
Atreides management, lp771.50K0.89%$45.82M

Top Buyers

HolderShares% AssetsChange
Blackrock2.54M0.00%1.80M
Ubs group1.43M0.01%829.27K
Goldman sachs group1.29M0.00%584.54K
Vanguard group3.53M0.00%576.83K
Barrow hanley mewhinney & strauss1.70M0.21%564.21K

Top Sellers

HolderShares% AssetsChange
Fuller & thaler asset management---809.95K
Baillie gifford933.31K0.04%-514.11K
Driehaus capital management---499.98K
Macquarie group---465.22K
Hood river capital management---398.71K

New Positions

HolderShares% AssetsChangeValue
Ranger investment management405.27K1.06%405.27K$16.82M
Sixth street partners management company399.13K0.00%399.13K$16.57M
Heights capital management340.10K3.33%340.10K$12.48M
T. rowe price investment management306.18K0.01%306.18K$12.71M
Silvercrest asset management group100.03K0.03%100.03K$4.15M

Sold Out

HolderChange
Tortoise investment management-2.00
Turning point benefit group-2.00
Central trust-4.00
Wealthtrak capital management-5.00
Stephens consulting-20.00

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Jun 30, 202628912.02%35,717,0157.70%781.37%17713.46%7622.58%
Mar 31, 2026148-41.96%20,626,455-37.63%460.83%87-40.00%36-46.27%
Dec 31, 2025165-44.26%22,561,639-31.00%510.73%90-47.06%46-42.50%
Sep 30, 202528319.41%31,868,8696.18%811.38%1613.21%7649.02%
Jun 30, 202524718.75%32,547,64018.09%831.56%15957.43%54-19.40%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
Vanguard MStar Total Stk Mkt Idx Invest1.44M2.98%725.00
Vanguard Total Stock Mkt Idx Inv1.44M2.97%-5.36K
Vanguard Morn Total Stk Mkt Idx Investor1.44M2.97%-5.36K
Vanguard US Total Market Shares ETF1.11M2.82%-
iShares Russell 2000 ETF1.20M2.47%-21.22K
Oberweis Micro-Cap Growth925.30K1.91%140.10K
Delaware Ivy Small Cap Growth C681.45K1.73%557.59K
Hood River Small-Cap Growth Instl756.13K1.67%-59.08K
Oberweis Micro-Cap785.20K1.65%-
First Trust NASDAQ® Cln Edge®StGidIfsETF626.89K1.29%1.93K

Recent Insider Transactions


DateNameRoleActivityValue
Jun 11, 2026Dambier Laura A.-Sell$150.52K
Jun 11, 2026Kosiba John W JR SVP, CFO & TreasurerSell$65.98K
Jun 11, 2026Kosiba John W JR SVP, CFO & TreasurerSell$187.60K
Jun 11, 2026McGahn Daniel P Chairman, President and CEOSell$174.46K
Jun 11, 2026McGahn Daniel P Chairman, President and CEOSell$429.05K

Insider Transactions Trends


DateBuySell
2026 Q2-9
2026 Q1-1
2025 Q3-6
2025 Q2-12
2024 Q4-1

AMSC Ownership FAQ


Who Owns American Superconductor?

American Superconductor shareholders are primarily institutional investors at 78.12%, followed by 3.44% insiders and 18.44% retail investors. The average institutional ownership in American Superconductor's industry, Electrical Equipment Stocks, is 53.83%, which American Superconductor exceeds.

Who owns the most shares of American Superconductor?

American Superconductor’s largest shareholders are Blackrock funding, inc. /de (4.1M shares, 8.96%), Blackrock (2.54M shares, 8.53%), and Vanguard group (3.53M shares, 8.02%). Together, they hold 25.51% of American Superconductor’s total shares outstanding.

Does Blackrock own American Superconductor?

Yes, BlackRock owns 8.53% of American Superconductor, totaling 2.54M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 59.5M$. In the last quarter, BlackRock increased its holdings by 1.8M shares, a 240.90% change.

Who is American Superconductor’s biggest shareholder by percentage of total assets invested?

Awm investment company is American Superconductor’s biggest shareholder by percentage of total assets invested, with 3.43% of its assets in 951.6K American Superconductor shares, valued at 39.5M$.

Who is the top mutual fund holder of American Superconductor shares?

Vanguard MStar Total Stk Mkt Idx Invest is the top mutual fund holder of American Superconductor shares, with 2.98% of its total shares outstanding invested in 1.44M American Superconductor shares.

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