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, Q4 2024
Institutional positions in American Superconductor Corp as of Dec 31, 2024. 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
- 191
- +24 vs. Q3 2024
- Shares held
- 27.5M
- +671.1K (+2.5%) vs. Q3 2024
- Total value
- $678.1M
- +$44.4M (+7.0%) vs. Q3 2024
- New holders
- 55
- 59 more added
- Sold out
- 31
- 51 more reduced
4 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2024: 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 | $953.2M |
| Q3 2025 | 273 | $1.94B |
| Q2 2025 | 232 | $1.20B |
| Q1 2025 | 189 | $499.8M |
| Q4 2024 | 191 | $678.1M |
| Q3 2024 | 171 | $642.6M |
| Q2 2024 | 155 | $636.1M |
| Q1 2024 | 128 | $312.0M |
| Q4 2023 | 99 | $178.8M |
| 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 | $178.2M |
| Q3 2021 | 101 | $243.3M |
| Q2 2021 | 105 | $284.8M |
| Q1 2021 | 104 | $311.2M |
Institutions, Q4 2024
Shares, value and share of portfolio for each institution holding American Superconductor Corp; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| STRS Ohio | 20,900 | $514.8K | 0.00% | +4,300+25.9% | Added |
| IMC-Chicago, LLC | 20,906 | $514.9K | 0.01% | +20,906 | New |
| Simplex Trading, LLC | 21,212 | $522.0K | 0.01% | −2,983−12.3% | Reduced |
| MetLife Investment Management | 21,201 | $522.2K | 0.00% | +1,415+7.2% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 22,306 | $549.4K | 0.00% | +3,506+18.6% | Added |
| Price T Rowe Associates Inc | 22,600 | $557.0K | 0.00% | +2,121+10.4% | Added |
| Ieq Capital, LLC | 22,835 | $562.4K | 0.01% | +22,835 | New |
| Millennium Management LLC | 23,065 | $568.1K | 0.00% | −239,134−91.2% | Reduced |
| Bridgeway Capital Management, LLC | 26,791 | $659.9K | 0.01% | −72,909−73.1% | Reduced |
| GWM Advisors LLC | 26,874 | $661.9K | 0.00% | +23,645+732.3% | Added |
| Emerald Advisers, LLC | 28,119 | $692.6K | 0.03% | +28,119 | New |
| Jane Street Group, LLC | 29,342 | $722.7K | 0.00% | +10,655+57.0% | Added |
| Citigroup Inc | 30,919 | $761.5K | 0.00% | +5,449+21.4% | Added |
| Main Management ETF Advisors, LLC | 31,328 | $772.0K | 0.03% | −2,816−8.2% | Reduced |
| Franklin Resources Inc | 32,815 | $808.2K | 0.00% | 00.0% | Unchanged |
| Deutsche Bank AG | 32,913 | $810.6K | 0.00% | +10,029+43.8% | Added |
| Cambridge Investment Research Advisors, Inc. | 33,464 | $824.0K | 0.00% | +2,511+8.1% | Added |
| Wells Fargo & Company | 34,267 | $844.0K | 0.00% | +13,899+68.2% | Added |
| Gsa Capital Partners LLP | 34,661 | $854.0K | 0.06% | +34,661 | New |
| California State Teachers Retirement System | 35,559 | $875.8K | 0.00% | +709+2.0% | Added |
| Alliancebernstein L.P. | 35,720 | $879.8K | 0.00% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 38,372 | $945.1K | 0.00% | +17,803+86.6% | Added |
| HRT Financial LP | 39,274 | $967.0K | 0.00% | +39,274 | New |
| Range Financial Group LLC | 42,018 | $1.03M | 0.48% | +42,018 | New |
| Dorsey & Whitney Trust CO LLC | 45,300 | $1.12M | 0.06% | +45,300 | New |
| Caption Management, LLC | 45,900 | $1.13M | 0.05% | +45,900 | New |
| Nkcfo LLC | 47,000 | $1.16M | 0.51% | +47,000 | New |
| Susquehanna International Group, LLP | 47,501 | $1.17M | 0.00% | +47,501 | New |
| Capital Fund Management S.A. | 48,622 | $1.20M | 0.01% | −29,023−37.4% | Reduced |
| JPMorgan Chase & Co | 50,012 | $1.23M | 0.00% | +3,295+7.1% | Added |
| Rhumbline Advisers | 51,119 | $1.26M | 0.00% | +606+1.2% | Added |
| Merit Financial Group, LLC | 51,942 | $1.28M | 0.02% | −1,526−2.9% | Reduced |
| SEI Investments Co | 52,106 | $1.28M | 0.00% | −10,891−17.3% | Reduced |
| Options Solutions, LLC | 54,239 | $1.34M | 0.60% | +4,415+8.9% | Added |
| Legato Capital Management LLC | 54,276 | $1.34M | 0.17% | −57,676−51.5% | Reduced |
| Alps Advisors Inc | 58,304 | $1.44M | 0.01% | −20,275−25.8% | Reduced |
| Amundi | 52,911 | $1.44M | 0.00% | +52,911 | New |
| LPL Financial LLC | 58,534 | $1.44M | 0.00% | +44,985+332.0% | Added |
| Campbell Newman Asset Management Inc | 60,205 | $1.48M | 0.12% | +60,205 | New |
| Algert Global LLC | 62,558 | $1.54M | 0.04% | +62,558 | New |
| Hussman Strategic Advisors, Inc. | 63,000 | $1.55M | 0.46% | −42,000−40.0% | Reduced |
| Barclays PLC | 65,903 | $1.62M | 0.00% | +7,575+13.0% | Added |
| New York State Common Retirement Fund | 66,536 | $1.64M | 0.00% | +2,436+3.8% | Added |
| Baird Financial Group, Inc. | 67,945 | $1.67M | 0.00% | +67,945 | New |
| Ameriprise Financial Inc | 69,281 | $1.71M | 0.00% | −9,219−11.7% | Reduced |
| UBS Asset Management Americas Inc | 73,274 | $1.80M | 0.00% | +12,942+21.5% | Added |
| Panagora Asset Management Inc | 73,613 | $1.81M | 0.01% | +30,212+69.6% | Added |
| Swiss National Bank | 75,300 | $1.85M | 0.00% | +3,100+4.3% | Added |
| Rice Hall James & Associates, LLC | 83,130 | $2.05M | 0.11% | −64,062−43.5% | Reduced |
| KP Management LLC | 95,000 | $2.34M | 0.82% | +95,000 | New |
| Ardsley Advisory Partners LP | 100,000 | $2.46M | 0.48% | 00.0% | Unchanged |
| KBC Group NV | 101,175 | $2.49M | 0.01% | +101,175 | New |
| GMT Capital Corp | 108,066 | $2.66M | 0.13% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 108,609 | $2.68M | 0.00% | +8,731+8.7% | Added |
| Andrew Hill Investment Advisors, Inc. | 114,971 | $2.83M | 2.10% | −72,569−38.7% | Reduced |
| Palisades Investment Partners, LLC | 142,415 | $3.51M | 1.48% | +12,317+9.5% | Added |
| ArrowMark Colorado Holdings LLC | 146,432 | $3.61M | 0.05% | −59,000−28.7% | Reduced |
| Hillsdale Investment Management Inc. | 183,800 | $4.53M | 0.23% | +1,150+0.6% | Added |
| Qube Research & Technologies Ltd | 183,974 | $4.53M | 0.01% | +53,843+41.4% | Added |
| Invesco Ltd. | 197,783 | $4.87M | 0.00% | −340,616−63.3% | Reduced |
| Balyasny Asset Management LLC | 238,992 | $5.89M | 0.01% | +238,992 | New |
| D. E. Shaw & Co., Inc. | 252,209 | $6.21M | 0.01% | −1,204−0.5% | Reduced |
| AQR Capital Management LLC | 256,230 | $6.31M | 0.01% | +151,015+143.5% | Added |
| Citadel Advisors LLC | 259,839 | $6.40M | 0.01% | −36,218−12.2% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 277,250 | $6.83M | 0.03% | −149,011−35.0% | Reduced |
| Arrowstreet Capital, Limited Partnership | 296,792 | $7.31M | 0.01% | +296,792 | New |
| Goldman Sachs Group Inc | 311,718 | $7.68M | 0.00% | +70,592+29.3% | Added |
| Charles Schwab Investment Management Inc | 317,869 | $7.83M | 0.00% | +13,341+4.4% | Added |
| Northern Trust Corp | 327,805 | $8.07M | 0.00% | +26,819+8.9% | Added |
| First Trust Advisors LP | 335,053 | $8.25M | 0.01% | +43,808+15.0% | Added |
| Legal & General Group Plc | 347,549 | $8.56M | 0.00% | +10,342+3.1% | Added |
| Allspring Global Investments Holdings, LLC | 377,375 | $9.29M | 0.01% | −56,770−13.1% | Reduced |
| Raymond James Financial Inc | 413,646 | $10.2M | 0.00% | +413,646 | New |
| UBS Group AG | 425,877 | $10.5M | 0.00% | +365,050+600.1% | Added |
| Essex Investment Management Co LLC | 429,876 | $10.6M | 1.90% | −34,630−7.5% | Reduced |
| Morgan Stanley | 438,171 | $10.8M | 0.00% | +60,766+16.1% | Added |
| Wellington Management Group LLP | 461,230 | $11.4M | 0.00% | +461,230 | New |
| Telemark Asset Management, LLC | 600,000 | $14.8M | 1.47% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 654,299 | $16.1M | 0.00% | +46,354+7.6% | Added |
| Oberweis Asset Management Inc | 664,400 | $16.4M | 0.77% | 00.0% | Unchanged |
| Royce & Associates LP | 838,932 | $20.7M | 0.19% | −116,242−12.2% | Reduced |
| Geode Capital Management, LLC | 856,455 | $21.1M | 0.00% | +9,043+1.1% | Added |
| Nuveen Asset Management, LLC | 878,624 | $21.6M | 0.01% | −151,686−14.7% | Reduced |
| State Street Corp | 909,295 | $22.4M | 0.00% | +3,045+0.3% | Added |
| Driehaus Capital Management LLC | 942,698 | $23.2M | 0.19% | +143,936+18.0% | Added |
| Macquarie Group Ltd | 1,040,179 | $25.6M | 0.03% | +44,613+4.5% | Added |
| Hood River Capital Management LLC | 1,236,146 | $30.4M | 0.45% | −195,794−13.7% | Reduced |
| AWM Investment Company, Inc. | 1,513,478 | $37.3M | 4.54% | −205,589−12.0% | Reduced |
| Baillie Gifford & Co | 1,649,790 | $40.6M | 0.03% | −456,605−21.7% | Reduced |
| Vanguard Group Inc | 2,222,935 | $54.8M | 0.00% | −203,343−8.4% | Reduced |
| BlackRock, Inc. | 3,427,893 | $84.4M | 0.00% | +707,110+26.0% | Added |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −158,389−100.0% | Sold out |
| Lisanti Capital Growth, LLC | 0 | $0 | 0.00% | −131,340−100.0% | Sold out |
| Assenagon Asset Management S.A. | 0 | $0 | 0.00% | −103,383−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −51,141−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −44,075−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −24,299−100.0% | Sold out |
| Stephens Inc | 0 | $0 | 0.00% | −24,178−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −22,965−100.0% | Sold out |
| Gotham Asset Management, LLC | 0 | $0 | 0.00% | −22,589−100.0% | Sold out |