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 2024
Institutional positions in American Superconductor Corp as of Jun 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
- 155
- +27 vs. Q1 2024
- Shares held
- 27.2M
- +4.10M (+17.7%) vs. Q1 2024
- Total value
- $636.1M
- +$324.1M (+103.9%) vs. Q1 2024
- New holders
- 50
- 46 more added
- Sold out
- 23
- 38 more reduced
Compare with Q1 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, Q2 2024
Shares, value and share of portfolio for each institution holding American Superconductor Corp; share changes are against Q1 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Arrowstreet Capital, Limited Partnership | 57,014 | $1.33M | 0.00% | −76,889−57.4% | Reduced |
| Susquehanna International Group, LLP | 57,842 | $1.35M | 0.00% | +40,775+238.9% | Added |
| Lisanti Capital Growth, LLC | 62,495 | $1.46M | 0.35% | +62,495 | New |
| Jane Street Group, LLC | 68,070 | $1.59M | 0.00% | −288,403−80.9% | Reduced |
| Merit Financial Group, LLC | 68,954 | $1.61M | 0.04% | −8,997−11.5% | Reduced |
| New York State Common Retirement Fund | 69,500 | $1.63M | 0.00% | +13,800+24.8% | Added |
| Qube Research & Technologies Ltd | 71,120 | $1.66M | 0.00% | −249,100−77.8% | Reduced |
| Options Solutions, LLC | 79,389 | $1.86M | 1.11% | +56,188+242.2% | Added |
| Alps Advisors Inc | 81,785 | $1.91M | 0.01% | −6,305−7.2% | Reduced |
| JPMorgan Chase & Co | 86,177 | $2.02M | 0.00% | +55,109+177.4% | Added |
| Northern Trust Corp | 87,751 | $2.05M | 0.00% | +16,038+22.4% | Added |
| Walleye Capital LLC | 90,737 | $2.12M | 0.02% | +89,769+9,273.7% | Added |
| Voloridge Investment Management, LLC | 95,038 | $2.22M | 0.01% | +95,038 | New |
| Charles Schwab Investment Management Inc | 97,873 | $2.29M | 0.00% | +81,907+513.0% | Added |
| Legato Capital Management LLC | 98,787 | $2.31M | 0.31% | +9,120+10.2% | Added |
| Bridgeway Capital Management, LLC | 99,700 | $2.33M | 0.05% | −30,000−23.1% | Reduced |
| GMT Capital Corp | 108,066 | $2.53M | 0.09% | 00.0% | Unchanged |
| Andrew Hill Investment Advisors, Inc. | 110,107 | $2.58M | 2.13% | −6,111−5.3% | Reduced |
| Prescott Group Capital Management, L.L.C. | 111,091 | $2.60M | 0.41% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 115,615 | $2.70M | 0.02% | +115,615 | New |
| Palisades Investment Partners, LLC | 122,239 | $2.86M | 1.42% | +122,239 | New |
| Bank of New York Mellon Corp | 122,239 | $2.86M | 0.00% | +102,652+524.1% | Added |
| Acadian Asset Management LLC | 124,488 | $2.91M | 0.01% | +76,270+158.2% | Added |
| Hussman Strategic Advisors, Inc. | 126,000 | $2.95M | 0.81% | +21,000+20.0% | Added |
| Rice Hall James & Associates, LLC | 148,288 | $3.47M | 0.21% | +148,288 | New |
| ClariVest Asset Management LLC | 156,560 | $3.66M | 0.37% | +69,303+79.4% | Added |
| Cubist Systematic Strategies, LLC | 178,727 | $4.18M | 0.07% | −57,379−24.3% | Reduced |
| Trexquant Investment LP | 185,848 | $4.35M | 0.07% | +69,051+59.1% | Added |
| Renaissance Technologies LLC | 187,989 | $4.40M | 0.01% | +74,500+65.6% | Added |
| Hillsdale Investment Management Inc. | 190,250 | $4.45M | 0.35% | +178,950+1,583.6% | Added |
| EAM Investors, LLC | 203,926 | $4.77M | 0.78% | +140,828+223.2% | Added |
| ArrowMark Colorado Holdings LLC | 246,432 | $5.76M | 0.07% | −60,000−19.6% | Reduced |
| First Trust Advisors LP | 281,710 | $6.59M | 0.01% | +30,547+12.2% | Added |
| Nuveen Asset Management, LLC | 285,623 | $6.68M | 0.00% | +285,623 | New |
| Goldman Sachs Group Inc | 362,829 | $8.49M | 0.00% | +113,260+45.4% | Added |
| Millennium Management LLC | 374,848 | $8.77M | 0.01% | −124,819−25.0% | Reduced |
| Citadel Advisors LLC | 380,795 | $8.91M | 0.01% | +48,398+14.6% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 522,913 | $12.2M | 0.05% | +127,122+32.1% | Added |
| Dimensional Fund Advisors LP | 532,216 | $12.5M | 0.00% | −48,331−8.3% | Reduced |
| Essex Investment Management Co LLC | 577,626 | $13.5M | 2.53% | −6,298−1.1% | Reduced |
| Telemark Asset Management, LLC | 600,000 | $14.0M | 1.27% | +200,000+50.0% | Added |
| D. E. Shaw & Co., Inc. | 650,257 | $15.2M | 0.02% | +362,062+125.6% | Added |
| Oberweis Asset Management Inc | 664,400 | $15.5M | 0.95% | +30,000+4.7% | Added |
| Invesco Ltd. | 669,336 | $15.7M | 0.00% | −194,891−22.6% | Reduced |
| State Street Corp | 766,144 | $17.9M | 0.00% | +432,029+129.3% | Added |
| Morgan Stanley | 806,416 | $18.9M | 0.00% | +290,000+56.2% | Added |
| Geode Capital Management, LLC | 810,901 | $19.0M | 0.00% | +426,160+110.8% | Added |
| Driehaus Capital Management LLC | 921,998 | $21.6M | 0.21% | −9,981−1.1% | Reduced |
| Royce & Associates LP | 982,963 | $23.0M | 0.21% | −210,219−17.6% | Reduced |
| Assenagon Asset Management S.A. | 1,057,064 | $24.7M | 0.06% | +914,872+643.4% | Added |
| Hood River Capital Management LLC | 1,735,014 | $40.6M | 0.84% | +116,207+7.2% | Added |
| Vanguard Group Inc | 2,086,720 | $48.8M | 0.00% | +387,786+22.8% | Added |
| AWM Investment Company, Inc. | 2,153,855 | $50.4M | 6.81% | −507,464−19.1% | Reduced |
| Baillie Gifford & Co | 2,214,083 | $51.8M | 0.04% | −312,467−12.4% | Reduced |
| BlackRock Inc. | 2,544,019 | $59.5M | 0.00% | +1,797,753+240.9% | Added |
| CM Management, LLC | 0 | $0 | 0.00% | −250,000−100.0% | Sold out |
| G2 Investment Partners Management LLC | 0 | $0 | 0.00% | −154,139−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −91,427−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −59,499−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −52,150−100.0% | Sold out |
| IMC-Chicago, LLC | 0 | $0 | 0.00% | −47,219−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −41,831−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −37,290−100.0% | Sold out |
| Marathon Trading Investment Management LLC | 0 | $0 | 0.00% | −34,400−100.0% | Sold out |
| Point72 Asia (Singapore) Pte. Ltd. | 0 | $0 | 0.00% | −34,326−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −32,662−100.0% | Sold out |
| Landscape Capital Management, L.L.C. | 0 | $0 | 0.00% | −27,754−100.0% | Sold out |
| Cannon Global Investment Management, LLC | 0 | $0 | 0.00% | −25,500−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −21,500−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −15,066−100.0% | Sold out |
| ProShare Advisors LLC | 0 | $0 | 0.00% | −12,325−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −11,284−100.0% | Sold out |
| Stone House Investment Management, LLC | 0 | $0 | 0.00% | −600−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −550−100.0% | Sold out |
| CoreCap Advisors, LLC | 0 | $0 | 0.00% | −220−100.0% | Sold out |
| First Manhattan Co | 0 | $0 | 0.00% | −150−100.0% | Sold out |
| North Star Investment Management Corp. | 0 | $0 | 0.00% | −21−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −2,143−100.0% | Sold out |