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 2021
Institutional positions in American Superconductor Corp as of Jun 30, 2021. 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
- 105
- +1 vs. Q1 2021
- Shares held
- 16.4M
- +54.7K (+0.3%) vs. Q1 2021
- Total value
- $286.0M
- −$26.5M (−8.5%) vs. Q1 2021
- New holders
- 21
- 31 more added
- Sold out
- 20
- 36 more reduced
Compare with Q1 2021: 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 2021
Shares, value and share of portfolio for each institution holding American Superconductor Corp; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Invesco Ltd. | 2,304,790 | $40.1M | 0.01% | +544,501+30.9% | Added |
| BlackRock Inc. | 1,856,405 | $32.3M | 0.00% | −164,192−8.1% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,299,894 | $22.6M | 0.08% | +567,298+77.4% | Added |
| Baillie Gifford & Co | 1,279,400 | $22.2M | 0.01% | +117,700+10.1% | Added |
| Vanguard Group Inc | 1,192,274 | $20.7M | 0.00% | +1,288+0.1% | Added |
| State Street Corp | 999,034 | $17.4M | 0.00% | +38,123+4.0% | Added |
| AWM Investment Company, Inc. | 854,534 | $14.9M | 1.47% | 00.0% | Unchanged |
| Royce & Associates LP | 721,574 | $12.5M | 0.09% | +165,000+29.6% | Added |
| Geode Capital Management, LLC | 439,176 | $7.64M | 0.00% | +14,593+3.4% | Added |
| D. E. Shaw & Co., Inc. | 411,377 | $7.15M | 0.01% | +230,943+128.0% | Added |
| Erste Asset Management GmbH | 381,670 | $6.97M | 0.14% | −18,330−4.6% | Reduced |
| Renaissance Technologies LLC | 344,554 | $5.99M | 0.01% | −271,921−44.1% | Reduced |
| First Trust Advisors LP | 329,609 | $5.73M | 0.01% | +5,622+1.7% | Added |
| Emerald Mutual Fund Advisers Trust | 272,010 | $4.73M | 0.15% | −4,139−1.5% | Reduced |
| JPMorgan Chase & Co | 264,966 | $4.61M | 0.00% | +77,259+41.2% | Added |
| Northern Trust Corp | 244,164 | $4.25M | 0.00% | −10,522−4.1% | Reduced |
| Dimensional Fund Advisors LP | 235,486 | $4.10M | 0.00% | −7,914−3.3% | Reduced |
| ArrowMark Colorado Holdings LLC | 212,000 | $3.69M | 0.03% | +57,000+36.8% | Added |
| Alps Advisors Inc | 207,160 | $3.60M | 0.03% | −36,600−15.0% | Reduced |
| Deutsche Bank AG | 169,492 | $2.95M | 0.00% | +93,319+122.5% | Added |
| Millennium Management LLC | 168,779 | $2.94M | 0.00% | +37,049+28.1% | Added |
| Arosa Capital Management LP | 150,000 | $2.61M | 0.91% | +150,000 | New |
| Baird Financial Group, Inc. | 144,585 | $2.51M | 0.01% | +16,004+12.4% | Added |
| KBC Group NV | 132,198 | $2.30M | 0.00% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 120,061 | $2.09M | 0.00% | −4,644−3.7% | Reduced |
| Nuveen Asset Management, LLC | 117,364 | $2.04M | 0.00% | −5,306−4.3% | Reduced |
| GMT Capital Corp | 108,066 | $1.88M | 0.14% | 00.0% | Unchanged |
| Bank of Montreal | 79,153 | $1.46M | 0.00% | +10,038+14.5% | Added |
| Susquehanna International Group, LLP | 79,404 | $1.38M | 0.00% | −66,421−45.5% | Reduced |
| Vontobel Holding Ltd. | 70,328 | $1.28M | 0.01% | +11,063+18.7% | Added |
| Charles Schwab Investment Management Inc | 66,373 | $1.16M | 0.00% | −192−0.3% | Reduced |
| Formula Growth Ltd | 65,000 | $1.13M | 0.16% | −10,000−13.3% | Reduced |
| Atom Investors LP | 63,921 | $1.11M | 0.23% | +63,921 | New |
| Harel Insurance Investments & Financial Services Ltd. | 59,614 | $1.04M | 0.02% | −53,198−47.2% | Reduced |
| Goldman Sachs Group Inc | 49,193 | $855.0K | 0.00% | −23,734−32.5% | Reduced |
| Two Sigma Investments, LP | 45,757 | $796.0K | 0.00% | −29,901−39.5% | Reduced |
| Assenagon Asset Management S.A. | 45,301 | $788.0K | 0.00% | +45,301 | New |
| Two Sigma Advisers, LP | 44,982 | $782.0K | 0.00% | +29,200+185.0% | Added |
| Engineers Gate Manager LP | 43,779 | $761.0K | 0.05% | −5,486−11.1% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 42,925 | $746.0K | 0.00% | +42,925 | New |
| FNY Investment Advisers, LLC | 38,259 | $665.0K | 0.27% | −97,008−71.7% | Reduced |
| STRS Ohio | 37,800 | $657.0K | 0.00% | +2,300+6.5% | Added |
| California State Teachers Retirement System | 36,992 | $643.0K | 0.00% | −3,598−8.9% | Reduced |
| Parametric Portfolio Associates LLC | 36,365 | $632.0K | 0.00% | +36,365 | New |
| Rhumbline Advisers | 35,143 | $611.0K | 0.00% | −2,500−6.6% | Reduced |
| Royal Bank of Canada | 27,165 | $472.0K | 0.00% | +692+2.6% | Added |
| Cambridge Investment Research Advisors, Inc. | 25,837 | $449.0K | 0.00% | −1,340−4.9% | Reduced |
| Jane Street Group, LLC | 24,825 | $432.0K | 0.00% | −58,577−70.2% | Reduced |
| AQR Capital Management LLC | 24,391 | $424.0K | 0.00% | −3,020−11.0% | Reduced |
| TFC Financial Management | 22,550 | $392.0K | 0.13% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 22,174 | $386.0K | 0.00% | +9,336+72.7% | Added |
| Walleye Capital LLC | 21,740 | $378.0K | 0.01% | +21,740 | New |
| New York State Common Retirement Fund | 21,326 | $371.0K | 0.00% | −3,374−13.7% | Reduced |
| Simplex Trading, LLC | 20,197 | $351.0K | 0.01% | +20,197 | New |
| Gsa Capital Partners LLP | 19,329 | $336.0K | 0.04% | +19,329 | New |
| Advisor Group Holdings, Inc. | 18,256 | $316.0K | 0.00% | +7,806+74.7% | Added |
| Group One Trading, L.P. | 17,996 | $313.0K | 0.01% | +17,996 | New |
| State of Wisconsin Investment Board | 17,400 | $303.0K | 0.00% | +600+3.6% | Added |
| Manufacturers Life Insurance Company, The | 16,908 | $294.0K | 0.00% | +1,324+8.5% | Added |
| American International Group, Inc. | 15,067 | $262.0K | 0.00% | −621−4.0% | Reduced |
| Bank of America Corp | 14,944 | $260.0K | 0.00% | −30,381−67.0% | Reduced |
| Norges Bank | 14,400 | $250.0K | 0.00% | +14,400 | New |
| HRT Financial LP | 12,933 | $224.0K | 0.00% | −27,889−68.3% | Reduced |
| Morgan Stanley | 12,850 | $223.0K | 0.00% | −88,968−87.4% | Reduced |
| Migdal Insurance & Financial Holdings Ltd. | 12,175 | $222.0K | 0.00% | +4,629+61.3% | Added |
| Squarepoint Ops LLC | 12,637 | $220.0K | 0.00% | +1,361+12.1% | Added |
| Quadrature Capital Ltd | 12,478 | $217.0K | 0.01% | +12,478 | New |
| Citadel Advisors LLC | 12,371 | $215.0K | 0.00% | +315+2.6% | Added |
| Centiva Capital, LP | 11,524 | $200.0K | 0.02% | +11,524 | New |
| Voya Investment Management LLC | 10,907 | $190.0K | 0.00% | −868−7.4% | Reduced |
| MetLife Investment Management | 10,830 | $188.3K | 0.00% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 7,133 | $124.0K | 0.00% | 00.0% | Unchanged |
| First Manhattan Co | 6,850 | $119.0K | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 6,500 | $113.0K | 0.01% | 00.0% | Unchanged |
| Cutler Group LP | 5,738 | $99.0K | 0.01% | +5,738 | New |
| Farmers & Merchants Investments Inc | 5,500 | $96.0K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 4,799 | $83.0K | 0.00% | −307,072−98.5% | Reduced |
| Barclays PLC | 3,483 | $60.0K | 0.00% | −26,903−88.5% | Reduced |
| Parallax Volatility Advisers, L.P. | 3,284 | $57.0K | 0.00% | +3,284 | New |
| Tower Research Capital LLC (TRC) | 3,249 | $56.0K | 0.00% | −3,370−50.9% | Reduced |
| BNP Paribas Arbitrage, SA | 2,704 | $47.0K | 0.00% | −9,521−77.9% | Reduced |
| Ameritas Investment Partners, Inc. | 2,255 | $39.0K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 2,089 | $36.0K | 0.00% | −148−6.6% | Reduced |
| Patriot Financial Group Insurance Agency, LLC | 1,963 | $34.0K | 0.01% | +235+13.6% | Added |
| Hoey Investments, Inc | 1,958 | $34.0K | 0.01% | +350+21.8% | Added |
| US Bancorp | 1,791 | $31.0K | 0.00% | +1,791 | New |
| Citigroup Inc | 1,320 | $23.0K | 0.00% | −462−25.9% | Reduced |
| Northwestern Mutual Wealth Management Co | 951 | $17.0K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 540 | $9.00K | 0.00% | 00.0% | Unchanged |
| Eaton Vance Management | 500 | $9.00K | 0.00% | 00.0% | Unchanged |
| Arcadia Investment Management Corp | 470 | $8.00K | 0.00% | +470 | New |
| Federation des caisses Desjardins du Quebec | 300 | $5.22K | 0.00% | 00.0% | Unchanged |
| TCI Wealth Advisors, Inc. | 235 | $4.00K | 0.00% | +235 | New |
| Johnson Financial Group, Inc. | 180 | $3.00K | 0.00% | +64+55.2% | Added |
| Concord Wealth Partners | 160 | $3.00K | 0.00% | +160 | New |
| UBS Group AG | 80 | $1.00K | 0.00% | −31,912−99.7% | Reduced |
| Whittier Trust Co of Nevada Inc | 40 | $1.00K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 85 | $1.00K | 0.00% | +15+21.4% | Added |
| Steward Partners Investment Advisory, LLC | 20 | $0 | 0.00% | −280−93.3% | Reduced |
| FMR LLC | 10 | $0 | 0.00% | +7+233.3% | Added |