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, Q3 2024
Institutional positions in American Superconductor Corp as of Sep 30, 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
- 171
- +17 vs. Q2 2024
- Shares held
- 27.3M
- +2.53M (+10.2%) vs. Q2 2024
- Total value
- $643.8M
- +$64.9M (+11.2%) vs. Q2 2024
- New holders
- 49
- 47 more added
- Sold out
- 32
- 51 more reduced
1 institution that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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 | $953.6M |
| 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, Q3 2024
Shares, value and share of portfolio for each institution holding American Superconductor Corp; share changes are against Q2 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 2,720,783 | $64.2M | 0.00% | +2,720,783 | New |
| Vanguard Group Inc | 2,426,278 | $57.3M | 0.00% | +339,558+16.3% | Added |
| Baillie Gifford & Co | 2,106,395 | $49.7M | 0.04% | −107,688−4.9% | Reduced |
| AWM Investment Company, Inc. | 1,719,067 | $40.6M | 4.92% | −434,788−20.2% | Reduced |
| Hood River Capital Management LLC | 1,431,940 | $33.8M | 0.55% | −303,074−17.5% | Reduced |
| Nuveen Asset Management, LLC | 1,030,310 | $24.3M | 0.01% | +744,687+260.7% | Added |
| Macquarie Group Ltd | 995,566 | $23.5M | 0.03% | +995,566 | New |
| Royce & Associates LP | 955,174 | $22.5M | 0.20% | −27,789−2.8% | Reduced |
| State Street Corp | 906,250 | $21.4M | 0.00% | +140,106+18.3% | Added |
| Geode Capital Management, LLC | 847,412 | $20.0M | 0.00% | +36,511+4.5% | Added |
| Driehaus Capital Management LLC | 798,762 | $18.9M | 0.16% | −123,236−13.4% | Reduced |
| Oberweis Asset Management Inc | 664,400 | $15.7M | 0.80% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 607,945 | $14.3M | 0.00% | +75,729+14.2% | Added |
| Telemark Asset Management, LLC | 600,000 | $14.2M | 1.43% | 00.0% | Unchanged |
| Invesco Ltd. | 538,399 | $12.7M | 0.00% | −130,937−19.6% | Reduced |
| Essex Investment Management Co LLC | 464,506 | $11.0M | 1.91% | −113,120−19.6% | Reduced |
| Allspring Global Investments Holdings, LLC | 434,145 | $10.2M | 0.02% | +434,145 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 426,261 | $10.1M | 0.05% | −96,652−18.5% | Reduced |
| Morgan Stanley | 377,405 | $8.91M | 0.00% | −429,011−53.2% | Reduced |
| Legal & General Group Plc | 337,207 | $7.96M | 0.00% | +331,795+6,130.7% | Added |
| Charles Schwab Investment Management Inc | 304,528 | $7.19M | 0.00% | +206,655+211.1% | Added |
| Northern Trust Corp | 300,986 | $7.10M | 0.00% | +213,235+243.0% | Added |
| Citadel Advisors LLC | 296,057 | $6.99M | 0.01% | −84,738−22.3% | Reduced |
| First Trust Advisors LP | 291,245 | $6.87M | 0.01% | +9,535+3.4% | Added |
| Millennium Management LLC | 262,199 | $6.19M | 0.01% | −112,649−30.1% | Reduced |
| D. E. Shaw & Co., Inc. | 253,413 | $5.98M | 0.01% | −396,844−61.0% | Reduced |
| Goldman Sachs Group Inc | 241,126 | $5.69M | 0.00% | −121,703−33.5% | Reduced |
| ArrowMark Colorado Holdings LLC | 205,432 | $4.85M | 0.06% | −41,000−16.6% | Reduced |
| Scout Investments, Inc. | 198,035 | $4.75M | 0.12% | +198,035 | New |
| Andrew Hill Investment Advisors, Inc. | 187,540 | $4.43M | 3.31% | +77,433+70.3% | Added |
| Hillsdale Investment Management Inc. | 182,650 | $4.31M | 0.33% | −7,600−4.0% | Reduced |
| Renaissance Technologies LLC | 158,389 | $3.74M | 0.01% | −29,600−15.7% | Reduced |
| ClariVest Asset Management LLC | 156,560 | $3.66M | 0.37% | 00.0% | Unchanged |
| Rice Hall James & Associates, LLC | 147,192 | $3.47M | 0.19% | −1,096−0.7% | Reduced |
| EAM Investors, LLC | 133,185 | $3.14M | 0.47% | −70,741−34.7% | Reduced |
| Lisanti Capital Growth, LLC | 131,340 | $3.10M | 0.78% | +68,845+110.2% | Added |
| Qube Research & Technologies Ltd | 130,131 | $3.07M | 0.01% | +59,011+83.0% | Added |
| Palisades Investment Partners, LLC | 130,098 | $3.07M | 1.34% | +7,859+6.4% | Added |
| Legato Capital Management LLC | 111,952 | $2.64M | 0.33% | +13,165+13.3% | Added |
| GMT Capital Corp | 108,066 | $2.55M | 0.10% | 00.0% | Unchanged |
| AQR Capital Management LLC | 105,215 | $2.48M | 0.00% | +105,215 | New |
| Hussman Strategic Advisors, Inc. | 105,000 | $2.48M | 0.61% | −21,000−16.7% | Reduced |
| Assenagon Asset Management S.A. | 103,383 | $2.44M | 0.01% | −953,681−90.2% | Reduced |
| Ardsley Advisory Partners LP | 100,000 | $2.36M | 0.45% | +60,000+150.0% | Added |
| Bank of New York Mellon Corp | 99,878 | $2.36M | 0.00% | −22,361−18.3% | Reduced |
| Bridgeway Capital Management, LLC | 99,700 | $2.35M | 0.05% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 93,434 | $2.21M | 0.00% | −78,920−45.8% | Reduced |
| Canada Pension Plan Investment Board | 92,800 | $2.19M | 0.00% | +88,700+2,163.4% | Added |
| Alps Advisors Inc | 78,579 | $1.85M | 0.01% | −3,206−3.9% | Reduced |
| Ameriprise Financial Inc | 78,500 | $1.85M | 0.00% | +61,826+370.8% | Added |
| Capital Fund Management S.A. | 77,645 | $1.83M | 0.02% | +77,645 | New |
| Swiss National Bank | 72,200 | $1.70M | 0.00% | +72,200 | New |
| New York State Common Retirement Fund | 64,100 | $1.51M | 0.00% | −5,400−7.8% | Reduced |
| SEI Investments Co | 62,997 | $1.49M | 0.00% | +38,949+162.0% | Added |
| UBS Group AG | 60,827 | $1.44M | 0.00% | +4,837+8.6% | Added |
| UBS Asset Management Americas Inc | 60,332 | $1.42M | 0.00% | +60,332 | New |
| Barclays PLC | 58,328 | $1.38M | 0.00% | +46,080+376.2% | Added |
| Merit Financial Group, LLC | 53,468 | $1.26M | 0.03% | −15,486−22.5% | Reduced |
| Dynamic Technology Lab Private Ltd | 51,141 | $1.21M | 0.13% | +51,141 | New |
| Rhumbline Advisers | 50,513 | $1.19M | 0.00% | +4,237+9.2% | Added |
| Options Solutions, LLC | 49,824 | $1.18M | 0.57% | −29,565−37.2% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 44,075 | $1.04M | 0.00% | +4,929+12.6% | Added |
| Panagora Asset Management Inc | 43,401 | $1.02M | 0.00% | +43,401 | New |
| Royal Bank of Canada | 41,016 | $968.0K | 0.00% | +14,006+51.9% | Added |
| Alliancebernstein L.P. | 35,720 | $843.0K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 34,850 | $822.5K | 0.00% | +32,376+1,308.6% | Added |
| Man Group plc | 34,218 | $807.5K | 0.00% | +21,050+159.9% | Added |
| Main Management ETF Advisors, LLC | 34,144 | $806.0K | 0.04% | +34,144 | New |
| Franklin Resources Inc | 32,815 | $781.3K | 0.00% | +32,815 | New |
| Cambridge Investment Research Advisors, Inc. | 30,953 | $730.0K | 0.00% | −11,080−26.4% | Reduced |
| Bank of America Corp | 30,841 | $727.8K | 0.00% | +2,618+9.3% | Added |
| Citigroup Inc | 25,470 | $601.1K | 0.00% | +18,043+242.9% | Added |
| Two Sigma Securities, LLC | 24,299 | $573.5K | 0.05% | +24,299 | New |
| Simplex Trading, LLC | 24,195 | $571.0K | 0.02% | −7,826−24.4% | Reduced |
| Stephens Inc | 24,178 | $570.6K | 0.01% | −29,189−54.7% | Reduced |
| Raymond James & Associates | 23,889 | $563.8K | 0.00% | +23,889 | New |
| Trexquant Investment LP | 22,965 | $542.0K | 0.01% | −162,883−87.6% | Reduced |
| Deutsche Bank AG | 22,884 | $540.1K | 0.00% | +7,985+53.6% | Added |
| Advisor Group Holdings, Inc. | 22,703 | $535.7K | 0.00% | +14,083+163.4% | Added |
| BNP Paribas Arbitrage, SA | 22,679 | $535.2K | 0.00% | −24,961−52.4% | Reduced |
| Gotham Asset Management, LLC | 22,589 | $533.1K | 0.01% | +22,589 | New |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 22,395 | $528.5K | 0.00% | −142−0.6% | Reduced |
| Petrus Trust Company, LTA | 20,940 | $494.2K | 0.05% | +20,940 | New |
| Sherbrooke Park Advisers LLC | 20,867 | $492.5K | 0.11% | +20,867 | New |
| Los Angeles Capital Management LLC | 20,569 | $485.4K | 0.00% | +20,569 | New |
| GTS Securities LLC | 20,557 | $485.1K | 0.01% | −33,296−61.8% | Reduced |
| Price T Rowe Associates Inc | 20,479 | $484.0K | 0.00% | −7,300−26.3% | Reduced |
| Wells Fargo & Company | 20,368 | $480.7K | 0.00% | −3,199−13.6% | Reduced |
| GoalVest Advisory LLC | 20,000 | $472.0K | 0.14% | −9,930−33.2% | Reduced |
| MetLife Investment Management | 19,786 | $466.9K | 0.00% | +11,149+129.1% | Added |
| Centiva Capital, LP | 19,319 | $455.9K | 0.02% | +19,319 | New |
| Two Sigma Investments, LP | 18,850 | $444.9K | 0.00% | −7,550−28.6% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 18,800 | $443.7K | 0.00% | +18,800 | New |
| Corebridge Financial, Inc. | 18,690 | $441.1K | 0.00% | +324+1.8% | Added |
| Jane Street Group, LLC | 18,687 | $441.0K | 0.00% | −49,383−72.5% | Reduced |
| STRS Ohio | 16,600 | $391.8K | 0.00% | +16,600 | New |
| TFC Financial Management | 16,471 | $388.7K | 0.06% | 00.0% | Unchanged |
| Janus Henderson Group PLC | 15,800 | $372.6K | 0.00% | +15,800 | New |
| Aquatic Capital Management LLC | 15,400 | $363.4K | 0.01% | +13,500+710.5% | Added |
| Spire Wealth Management | 14,889 | $351.4K | 0.01% | +14,825+23,164.1% | Added |