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
- 27.3M
- +3.11M (+12.8%) vs. Q1 2024
- Total value
- $638.3M
- +$311.7M (+95.4%) vs. Q1 2024
- New holders
- 50
- 45 more added
- Sold out
- 23
- 39 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 | $953.6M |
| 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 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 |
|---|---|---|---|---|---|
| BlackRock Inc. | 2,544,019 | $59.5M | 0.00% | +1,797,753+240.9% | Added |
| Baillie Gifford & Co | 2,214,083 | $51.8M | 0.04% | −312,467−12.4% | Reduced |
| AWM Investment Company, Inc. | 2,153,855 | $50.4M | 6.81% | −507,464−19.1% | Reduced |
| Vanguard Group Inc | 2,086,720 | $48.8M | 0.00% | +387,786+22.8% | Added |
| Hood River Capital Management LLC | 1,735,014 | $40.6M | 0.84% | +116,207+7.2% | Added |
| Assenagon Asset Management S.A. | 1,057,064 | $24.7M | 0.06% | +914,872+643.4% | Added |
| Royce & Associates LP | 982,963 | $23.0M | 0.21% | −210,219−17.6% | Reduced |
| Driehaus Capital Management LLC | 921,998 | $21.6M | 0.21% | −9,981−1.1% | Reduced |
| Geode Capital Management, LLC | 810,901 | $19.0M | 0.00% | +426,160+110.8% | Added |
| Morgan Stanley | 806,416 | $18.9M | 0.00% | −742,832−47.9% | Reduced |
| State Street Corp | 766,144 | $17.9M | 0.00% | +432,029+129.3% | Added |
| Invesco Ltd. | 669,336 | $15.7M | 0.00% | −194,891−22.6% | Reduced |
| Oberweis Asset Management Inc | 664,400 | $15.5M | 0.95% | +30,000+4.7% | Added |
| D. E. Shaw & Co., Inc. | 650,257 | $15.2M | 0.02% | +362,062+125.6% | Added |
| Telemark Asset Management, LLC | 600,000 | $14.0M | 1.27% | +200,000+50.0% | Added |
| Essex Investment Management Co LLC | 577,626 | $13.5M | 2.53% | −6,298−1.1% | Reduced |
| Dimensional Fund Advisors LP | 532,216 | $12.5M | 0.00% | −48,331−8.3% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 522,913 | $12.2M | 0.05% | +127,122+32.1% | Added |
| Citadel Advisors LLC | 380,795 | $8.91M | 0.01% | +48,398+14.6% | Added |
| Millennium Management LLC | 374,848 | $8.77M | 0.01% | −124,819−25.0% | Reduced |
| Goldman Sachs Group Inc | 362,829 | $8.49M | 0.00% | +113,260+45.4% | Added |
| Nuveen Asset Management, LLC | 285,623 | $6.68M | 0.00% | +285,623 | New |
| First Trust Advisors LP | 281,710 | $6.59M | 0.01% | +30,547+12.2% | Added |
| ArrowMark Colorado Holdings LLC | 246,432 | $5.76M | 0.07% | −60,000−19.6% | Reduced |
| EAM Investors, LLC | 203,926 | $4.77M | 0.78% | +140,828+223.2% | Added |
| Hillsdale Investment Management Inc. | 190,250 | $4.45M | 0.35% | +178,950+1,583.6% | Added |
| Renaissance Technologies LLC | 187,989 | $4.40M | 0.01% | +74,500+65.6% | Added |
| Trexquant Investment LP | 185,848 | $4.35M | 0.07% | +69,051+59.1% | Added |
| Cubist Systematic Strategies, LLC | 178,727 | $4.18M | 0.07% | −57,379−24.3% | Reduced |
| JPMorgan Chase & Co | 172,354 | $4.03M | 0.00% | +110,218+177.4% | Added |
| ClariVest Asset Management LLC | 156,560 | $3.66M | 0.37% | +69,303+79.4% | Added |
| Rice Hall James & Associates, LLC | 148,288 | $3.47M | 0.21% | +148,288 | New |
| Hussman Strategic Advisors, Inc. | 126,000 | $2.95M | 0.81% | +21,000+20.0% | Added |
| Acadian Asset Management LLC | 124,488 | $2.91M | 0.01% | +76,270+158.2% | Added |
| Bank of New York Mellon Corp | 122,239 | $2.86M | 0.00% | +102,652+524.1% | Added |
| Palisades Investment Partners, LLC | 122,239 | $2.86M | 1.42% | +122,239 | New |
| SG Americas Securities, LLC | 115,615 | $2.70M | 0.02% | +115,615 | New |
| Prescott Group Capital Management, L.L.C. | 111,091 | $2.60M | 0.41% | 00.0% | Unchanged |
| Andrew Hill Investment Advisors, Inc. | 110,107 | $2.58M | 2.13% | −6,111−5.3% | Reduced |
| GMT Capital Corp | 108,066 | $2.53M | 0.09% | 00.0% | Unchanged |
| Bridgeway Capital Management, LLC | 99,700 | $2.33M | 0.05% | −30,000−23.1% | Reduced |
| Legato Capital Management LLC | 98,787 | $2.31M | 0.31% | +9,120+10.2% | Added |
| Charles Schwab Investment Management Inc | 97,873 | $2.29M | 0.00% | +81,907+513.0% | Added |
| Voloridge Investment Management, LLC | 95,038 | $2.22M | 0.01% | +95,038 | New |
| Walleye Capital LLC | 90,737 | $2.12M | 0.02% | +89,769+9,273.7% | Added |
| Northern Trust Corp | 87,751 | $2.05M | 0.00% | +16,038+22.4% | Added |
| Alps Advisors Inc | 81,785 | $1.91M | 0.01% | −6,305−7.2% | Reduced |
| Options Solutions, LLC | 79,389 | $1.86M | 1.11% | +56,188+242.2% | Added |
| Qube Research & Technologies Ltd | 71,120 | $1.66M | 0.00% | −249,100−77.8% | Reduced |
| New York State Common Retirement Fund | 69,500 | $1.63M | 0.00% | +13,800+24.8% | Added |
| Merit Financial Group, LLC | 68,954 | $1.61M | 0.04% | −8,997−11.5% | Reduced |
| Jane Street Group, LLC | 68,070 | $1.59M | 0.00% | −288,403−80.9% | Reduced |
| Lisanti Capital Growth, LLC | 62,495 | $1.46M | 0.35% | +62,495 | New |
| Susquehanna International Group, LLP | 57,842 | $1.35M | 0.00% | +40,775+238.9% | Added |
| Arrowstreet Capital, Limited Partnership | 57,014 | $1.33M | 0.00% | −76,889−57.4% | Reduced |
| UBS Group AG | 55,990 | $1.31M | 0.00% | +39,740+244.6% | Added |
| GTS Securities LLC | 53,853 | $1.26M | 0.03% | +3,704+7.4% | Added |
| Stephens Inc | 53,367 | $1.25M | 0.02% | +53,367 | New |
| Tudor Investment Corp Et Al | 48,276 | $1.13M | 0.01% | +48,276 | New |
| BNP Paribas Arbitrage, SA | 47,640 | $1.11M | 0.00% | +47,640 | New |
| Rhumbline Advisers | 46,276 | $1.08M | 0.00% | +44,888+3,234.0% | Added |
| LPL Financial LLC | 44,994 | $1.05M | 0.00% | +32,175+251.0% | Added |
| Cambridge Investment Research Advisors, Inc. | 42,033 | $983.0K | 0.00% | −3,334−7.3% | Reduced |
| Ardsley Advisory Partners LP | 40,000 | $935.6K | 0.17% | −35,000−46.7% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 39,146 | $915.6K | 0.00% | +828+2.2% | Added |
| Laurion Capital Management LP | 38,206 | $893.6K | 0.03% | −262,117−87.3% | Reduced |
| Raymond James Financial Services Advisors, Inc. | 37,318 | $872.9K | 0.00% | +37,318 | New |
| Alliancebernstein L.P. | 35,720 | $835.5K | 0.00% | +35,720 | New |
| Graham Capital Management, L.P. | 35,380 | $827.5K | 0.03% | +8,488+31.6% | Added |
| Engineers Gate Manager LP | 35,100 | $821.0K | 0.02% | +10,945+45.3% | Added |
| Alpine Global Management, LLC | 32,327 | $756.1K | 0.13% | +32,327 | New |
| Jump Financial, LLC | 32,300 | $755.5K | 0.02% | −83,544−72.1% | Reduced |
| Simplex Trading, LLC | 32,021 | $748.0K | 0.02% | −21,641−40.3% | Reduced |
| GoalVest Advisory LLC | 29,930 | $700.1K | 0.22% | 00.0% | Unchanged |
| Bank of America Corp | 28,223 | $660.1K | 0.00% | −4,588−14.0% | Reduced |
| Price T Rowe Associates Inc | 27,779 | $650.0K | 0.00% | +10,868+64.3% | Added |
| Semanteon Capital Management, LP | 27,114 | $634.2K | 0.45% | +27,114 | New |
| Royal Bank of Canada | 27,010 | $632.0K | 0.00% | −1,639−5.7% | Reduced |
| Two Sigma Investments, LP | 26,400 | $617.5K | 0.00% | −9,529−26.5% | Reduced |
| Corton Capital Inc. | 25,760 | $602.5K | 0.32% | +12,773+98.4% | Added |
| SEI Investments Co | 24,048 | $562.5K | 0.00% | +24,048 | New |
| Wells Fargo & Company | 23,567 | $551.2K | 0.00% | +10,233+76.7% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 22,537 | $527.1K | 0.00% | −17,389−43.6% | Reduced |
| Cetera Investment Advisers | 20,677 | $483.6K | 0.00% | +20,677 | New |
| Point72 Asset Management, L.P. | 20,490 | $479.3K | 0.00% | +16,790+453.8% | Added |
| Quantbot Technologies LP | 20,399 | $477.1K | 0.02% | +20,399 | New |
| Schonfeld Strategic Advisors LLC | 20,100 | $470.1K | 0.00% | −48,194−70.6% | Reduced |
| Joule Financial, LLC | 19,308 | $451.6K | 0.16% | −21,934−53.2% | Reduced |
| Corebridge Financial, Inc. | 18,366 | $429.8K | 0.00% | +18,366 | New |
| Occudo Quantitative Strategies LP | 18,117 | $423.8K | 0.08% | +1,156+6.8% | Added |
| Ameriprise Financial Inc | 16,674 | $390.0K | 0.00% | −3,459−17.2% | Reduced |
| TFC Financial Management | 16,471 | $385.3K | 0.07% | 00.0% | Unchanged |
| Deutsche Bank AG | 14,899 | $348.5K | 0.00% | +14,899 | New |
| HSBC Holdings PLC | 13,444 | $313.0K | 0.00% | +13,444 | New |
| Bayesian Capital Management, LP | 13,300 | $311.1K | 0.04% | +13,300 | New |
| Advisory Services Network, LLC | 13,256 | $310.1K | 0.01% | +13,256 | New |
| Man Group plc | 13,168 | $308.0K | 0.00% | −72,277−84.6% | Reduced |
| Harel Insurance Investments & Financial Services Ltd. | 13,152 | $308.0K | 0.01% | −9,772−42.6% | Reduced |
| Manufacturers Life Insurance Company, The | 13,123 | $306.9K | 0.00% | +13,123 | New |
| Bailard, Inc. | 12,938 | $302.6K | 0.01% | −9,500−42.3% | Reduced |