American Superconductor Corp
AMSC- Exchange
- Nasdaq
- Industry
- Motors & Generators
- SEC CIK
- 0000880807
No open-market purchases or sales by American Superconductor Corp insiders were filed in the last 90 days; 277 institutions reported holding it in 13F filings for Q2 2026, worth $1.47B in total; no superinvestor holds it.
13F holders, Q2 2025
Institutional positions in American Superconductor Corp as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 232
- +44 vs. Q1 2025
- Shares held
- 32.7M
- +5.18M (+18.8%) vs. Q1 2025
- Total value
- $1.20B
- +$701.8M (+140.3%) vs. Q1 2025
- New holders
- 70
- 94 more added
- Sold out
- 26
- 48 more reduced
1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting AMSC on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 277 | $1.47B |
| Q1 2026 | 245 | $1.12B |
| Q4 2025 | 240 | $953.6M |
| Q3 2025 | 273 | $1.95B |
| Q2 2025 | 232 | $1.20B |
| Q1 2025 | 189 | $500.1M |
| Q4 2024 | 191 | $678.1M |
| Q3 2024 | 171 | $643.8M |
| Q2 2024 | 155 | $638.3M |
| Q1 2024 | 128 | $326.7M |
| Q4 2023 | 99 | $180.6M |
| Q3 2023 | 72 | $100.0M |
| Q2 2023 | 77 | $81.9M |
| Q1 2023 | 74 | $64.6M |
| Q4 2022 | 77 | $48.4M |
| Q3 2022 | 82 | $61.0M |
| Q2 2022 | 93 | $68.6M |
| Q1 2022 | 107 | $119.5M |
| Q4 2021 | 107 | $178.5M |
| Q3 2021 | 101 | $243.3M |
| Q2 2021 | 105 | $286.0M |
| Q1 2021 | 104 | $312.5M |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding American Superconductor Corp; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,420,039 | $125.5M | 0.00% | +161,616+5.0% | Added |
| Vanguard Group Inc | 2,447,047 | $89.8M | 0.00% | +159,462+7.0% | Added |
| AWM Investment Company, Inc. | 1,558,478 | $57.2M | 6.41% | 00.0% | Unchanged |
| Baillie Gifford & Co | 1,452,679 | $53.3M | 0.04% | −66,211−4.4% | Reduced |
| Hood River Capital Management LLC | 1,168,906 | $42.9M | 0.60% | −70,190−5.7% | Reduced |
| Atreides Management, LP | 1,104,458 | $40.5M | 1.12% | +280,418+34.0% | Added |
| Goldman Sachs Group Inc | 1,029,047 | $37.8M | 0.01% | +547,086+113.5% | Added |
| State Street Corp | 1,020,165 | $37.4M | 0.00% | +130,118+14.6% | Added |
| Nuveen, LLC | 997,902 | $36.6M | 0.01% | +219,336+28.2% | Added |
| Geode Capital Management, LLC | 940,111 | $34.5M | 0.00% | +58,430+6.6% | Added |
| Driehaus Capital Management LLC | 839,847 | $30.8M | 0.25% | +40.0% | Added |
| Macquarie Group Ltd | 822,179 | $30.2M | 0.04% | −204,643−19.9% | Reduced |
| Royce & Associates LP | 811,732 | $29.8M | 0.31% | −55,610−6.4% | Reduced |
| Telemark Asset Management, LLC | 690,000 | $25.3M | 2.69% | +90,000+15.0% | Added |
| Citadel Advisors LLC | 689,691 | $25.3M | 0.02% | +558,130+424.2% | Added |
| Oberweis Asset Management Inc | 668,200 | $24.5M | 1.07% | 00.0% | Unchanged |
| Morgan Stanley | 570,356 | $20.9M | 0.00% | +60,459+11.9% | Added |
| Emerald Advisers, LLC | 500,054 | $18.3M | 0.67% | +461,335+1,191.5% | Added |
| Dimensional Fund Advisors LP | 480,753 | $17.6M | 0.00% | −187,399−28.0% | Reduced |
| Wellington Management Group LLP | 431,589 | $15.8M | 0.00% | +142,416+49.2% | Added |
| Legal & General Group Plc | 417,039 | $15.3M | 0.00% | +52,509+14.4% | Added |
| Essex Investment Management Co LLC | 346,042 | $12.7M | 2.31% | −26,179−7.0% | Reduced |
| Northern Trust Corp | 341,549 | $12.5M | 0.00% | +11,036+3.3% | Added |
| Heights Capital Management, Inc | 340,102 | $12.5M | 3.90% | +340,102 | New |
| First Trust Advisors LP | 337,574 | $12.4M | 0.01% | +7,022+2.1% | Added |
| Charles Schwab Investment Management Inc | 322,958 | $11.8M | 0.00% | +13,277+4.3% | Added |
| Allspring Global Investments Holdings, LLC | 273,396 | $9.84M | 0.02% | −67,634−19.8% | Reduced |
| Tudor Investment Corp Et Al | 260,121 | $9.54M | 0.07% | +240,007+1,193.2% | Added |
| Millennium Management LLC | 251,807 | $9.24M | 0.01% | +26,125+11.6% | Added |
| Arrowstreet Capital, Limited Partnership | 236,396 | $8.67M | 0.01% | +236,396 | New |
| Wells Fargo & Company | 220,796 | $8.10M | 0.00% | +173,854+370.4% | Added |
| Hillsdale Investment Management Inc. | 220,000 | $8.07M | 0.30% | +29,600+15.5% | Added |
| Emerald Mutual Fund Advisers Trust | 213,914 | $7.85M | 0.48% | +201,317+1,598.1% | Added |
| Algert Global LLC | 205,705 | $7.55M | 0.16% | +110,047+115.0% | Added |
| Ghisallo Capital Management LLC | 200,000 | $7.34M | 0.20% | +200,000 | New |
| UBS Group AG | 198,401 | $7.28M | 0.00% | +23,189+13.2% | Added |
| Lisanti Capital Growth, LLC | 180,750 | $6.63M | 1.84% | +180,750 | New |
| Panagora Asset Management Inc | 171,988 | $6.31M | 0.03% | +26,674+18.4% | Added |
| Bank of America Corp | 169,141 | $6.21M | 0.00% | +116,207+219.5% | Added |
| AQR Capital Management LLC | 168,890 | $6.20M | 0.01% | −42,274−20.0% | Reduced |
| Raymond James Financial Inc | 166,914 | $6.12M | 0.00% | +9,025+5.7% | Added |
| Jane Street Group, LLC | 164,105 | $6.02M | 0.01% | +42,566+35.0% | Added |
| Trexquant Investment LP | 159,483 | $5.85M | 0.07% | −82,886−34.2% | Reduced |
| Invesco Ltd. | 159,292 | $5.84M | 0.00% | −84,231−34.6% | Reduced |
| ArrowMark Colorado Holdings LLC | 156,432 | $5.74M | 0.10% | +26,000+19.9% | Added |
| Andrew Hill Investment Advisors, Inc. | 152,779 | $5.61M | 4.51% | +79,888+109.6% | Added |
| Advisor Group Holdings, Inc. | 151,278 | $5.55M | 0.01% | +43,872+40.8% | Added |
| Squarepoint Ops LLC | 147,224 | $5.40M | 0.01% | +101,746+223.7% | Added |
| Kennedy Capital Management, Inc. | 146,209 | $5.36M | 0.13% | +127,005+661.3% | Added |
| Palisades Investment Partners, LLC | 140,498 | $5.15M | 2.25% | −4,106−2.8% | Reduced |
| UBS Asset Management Americas Inc | 134,234 | $4.93M | 0.00% | +62,672+87.6% | Added |
| D. E. Shaw & Co., Inc. | 133,644 | $4.90M | 0.00% | +58,653+78.2% | Added |
| Qube Research & Technologies Ltd | 130,120 | $4.77M | 0.01% | −279,287−68.2% | Reduced |
| Jump Financial, LLC | 128,635 | $4.72M | 0.06% | +128,635 | New |
| Two Sigma Investments, LP | 122,850 | $4.51M | 0.01% | +79,493+183.3% | Added |
| Bank of New York Mellon Corp | 120,854 | $4.43M | 0.00% | +12,908+12.0% | Added |
| Capital Fund Management S.A. | 112,345 | $4.12M | 0.05% | −35,128−23.8% | Reduced |
| Castleark Management LLC | 109,170 | $4.01M | 0.12% | +109,170 | New |
| GMT Capital Corp | 108,066 | $3.96M | 0.17% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 95,265 | $3.50M | 0.01% | +44,438+87.4% | Added |
| Rice Hall James & Associates, LLC | 94,731 | $3.48M | 0.19% | +11,982+14.5% | Added |
| Swiss National Bank | 83,300 | $3.06M | 0.00% | +10,700+14.7% | Added |
| Baird Financial Group, Inc. | 83,082 | $3.05M | 0.01% | −2,684−3.1% | Reduced |
| Barclays PLC | 80,361 | $2.95M | 0.00% | +32,368+67.4% | Added |
| Legato Capital Management LLC | 78,562 | $2.88M | 0.34% | +34,199+77.1% | Added |
| Balyasny Asset Management LLC | 75,303 | $2.76M | 0.01% | +53,098+239.1% | Added |
| EAM Investors, LLC | 75,294 | $2.76M | 0.42% | +75,294 | New |
| ExodusPoint Capital Management, LP | 74,362 | $2.73M | 0.03% | +38,097+105.1% | Added |
| Lumbard & Kellner, LLC | 72,439 | $2.66M | 1.16% | +72,439 | New |
| New York State Common Retirement Fund | 69,336 | $2.54M | 0.00% | +2,800+4.2% | Added |
| Penserra Capital Management LLC | 68,312 | $2.51M | 0.03% | +68,312 | New |
| Campbell Newman Asset Management Inc | 65,011 | $2.39M | 0.19% | +4,385+7.2% | Added |
| Alps Advisors Inc | 64,643 | $2.37M | 0.01% | +5,179+8.7% | Added |
| Royal Bank of Canada | 63,002 | $2.31M | 0.00% | +36,812+140.6% | Added |
| Rhumbline Advisers | 61,162 | $2.24M | 0.00% | +11,989+24.4% | Added |
| Centiva Capital, LP | 56,940 | $2.09M | 0.14% | +56,940 | New |
| JPMorgan Chase & Co | 55,637 | $2.04M | 0.00% | −2,810−4.8% | Reduced |
| California State Teachers Retirement System | 50,769 | $1.86M | 0.00% | +15,210+42.8% | Added |
| Franklin Resources Inc | 50,515 | $1.85M | 0.00% | +6,413+14.5% | Added |
| Merit Financial Group, LLC | 49,895 | $1.83M | 0.02% | −1,856−3.6% | Reduced |
| Mackenzie Financial Corp | 49,770 | $1.83M | 0.00% | +49,770 | New |
| Options Solutions, LLC | 47,221 | $1.73M | 0.62% | +4,711+11.1% | Added |
| Polen Capital Management LLC | 47,221 | $1.73M | 0.01% | +47,221 | New |
| Amundi | 43,895 | $1.72M | 0.00% | −5,869−11.8% | Reduced |
| Janus Henderson Group PLC | 46,761 | $1.72M | 0.00% | +30,961+196.0% | Added |
| Janney Montgomery Scott LLC | 45,761 | $1.68M | 0.00% | +45,761 | New |
| Point72 Asset Management, L.P. | 45,659 | $1.68M | 0.00% | +3,218+7.6% | Added |
| Oppenheimer & Co Inc | 43,595 | $1.60M | 0.02% | +33,595+336.0% | Added |
| XTX Topco Ltd | 42,213 | $1.55M | 0.06% | +25,944+159.5% | Added |
| SEI Investments Co | 42,073 | $1.54M | 0.00% | +12,217+40.9% | Added |
| Fox Run Management, L.L.C. | 37,505 | $1.38M | 0.23% | +8,786+30.6% | Added |
| Verition Fund Management LLC | 37,200 | $1.36M | 0.01% | −7,104−16.0% | Reduced |
| Kornitzer Capital Management Inc | 36,660 | $1.35M | 0.03% | +36,660 | New |
| LPL Financial LLC | 36,270 | $1.33M | 0.00% | +2,495+7.4% | Added |
| Alliancebernstein L.P. | 35,720 | $1.31M | 0.00% | 00.0% | Unchanged |
| Prudential Financial Inc | 35,170 | $1.29M | 0.00% | +35,170 | New |
| Cambridge Investment Research Advisors, Inc. | 34,948 | $1.28M | 0.00% | −2,775−7.4% | Reduced |
| Dark Forest Capital Management LP | 34,747 | $1.27M | 0.05% | −31,776−47.8% | Reduced |
| Aquatic Capital Management LLC | 33,025 | $1.21M | 0.02% | +33,025 | New |
| Price T Rowe Associates Inc | 27,853 | $1.02M | 0.00% | +3,576+14.7% | Added |