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 2026
Institutional positions in American Superconductor Corp as of Jun 30, 2026. 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
- 277
- +36 vs. Q1 2026
- Shares held
- 35.4M
- +2.30M (+7.0%) vs. Q1 2026
- Total value
- $1.47B
- +$349.0M (+31.1%) vs. Q1 2026
- New holders
- 66
- 108 more added
- Sold out
- 30
- 77 more reduced
4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 2026
Shares, value and share of portfolio for each institution holding American Superconductor Corp; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 4,095,371 | $170.0M | 0.00% | +112,721+2.8% | Added |
| Vanguard Capital Management LLC | 2,034,219 | $84.4M | 0.00% | −5,249−0.3% | Reduced |
| Barrow Hanley Mewhinney & Strauss LLC | 1,704,006 | $70.7M | 0.21% | +564,213+49.5% | Added |
| UBS Group AG | 1,429,090 | $59.3M | 0.01% | +829,269+138.3% | Added |
| Vanguard Portfolio Management LLC | 1,418,863 | $58.9M | 0.00% | −292,814−17.1% | Reduced |
| State Street Corp | 1,358,225 | $56.4M | 0.00% | +97,154+7.7% | Added |
| Goldman Sachs Group Inc | 1,294,047 | $53.7M | 0.01% | +584,543+82.4% | Added |
| Geode Capital Management, LLC | 1,243,198 | $51.6M | 0.00% | +74,046+6.3% | Added |
| First Trust Advisors LP | 1,168,424 | $48.5M | 0.03% | +390,156+50.1% | Added |
| Oberweis Asset Management Inc | 987,500 | $41.0M | 0.85% | +137,600+16.2% | Added |
| AWM Investment Company, Inc. | 951,604 | $39.5M | 3.43% | +150,000+18.7% | Added |
| Baillie Gifford & Co | 933,308 | $38.7M | 0.04% | −514,111−35.5% | Reduced |
| Emerald Advisers, LLC | 843,956 | $35.0M | 0.82% | +86,552+11.4% | Added |
| Legal & General Group Plc | 756,863 | $31.4M | 0.01% | +226,732+42.8% | Added |
| Dimensional Fund Advisors LP | 645,991 | $26.8M | 0.00% | −12,306−1.9% | Reduced |
| Morgan Stanley | 635,833 | $26.4M | 0.00% | +1,992+0.3% | Added |
| Nuveen, LLC | 628,406 | $26.1M | 0.01% | −392,541−38.4% | Reduced |
| Telemark Asset Management, LLC | 600,000 | $24.9M | 1.80% | 00.0% | Unchanged |
| Royce & Associates LP | 555,821 | $23.1M | 0.19% | +13,043+2.4% | Added |
| Emerald Mutual Fund Advisers Trust | 538,955 | $22.4M | 0.79% | +100,080+22.8% | Added |
| Northern Trust Corp | 433,792 | $18.0M | 0.00% | +40,568+10.3% | Added |
| Ranger Investment Management, L.P. | 405,266 | $16.8M | 1.06% | +405,266 | New |
| Stephens Investment Management Group LLC | 402,762 | $16.7M | 0.18% | +94,247+30.5% | Added |
| Charles Schwab Investment Management Inc | 399,125 | $16.6M | 0.00% | +13,711+3.6% | Added |
| Panagora Asset Management Inc | 375,515 | $15.6M | 0.05% | +119,123+46.5% | Added |
| D. E. Shaw & Co., Inc. | 366,845 | $15.2M | 0.01% | −200,729−35.4% | Reduced |
| BNP Paribas Arbitrage, SA | 366,437 | $15.2M | 0.01% | −70,250−16.1% | Reduced |
| Algert Global LLC | 353,832 | $14.7M | 0.17% | −136,139−27.8% | Reduced |
| Price T Rowe Associates Inc | 343,867 | $14.3M | 0.00% | +285,255+486.7% | Added |
| Vanguard Fiduciary Trust Co | 337,929 | $14.0M | 0.00% | +11,887+3.6% | Added |
| T. Rowe Price Investment Management, Inc. | 306,182 | $12.7M | 0.01% | +306,182 | New |
| HRT Financial LP | 298,420 | $12.4M | 0.02% | +298,420 | New |
| Qube Research & Technologies Ltd | 250,573 | $10.4M | 0.01% | −78,840−23.9% | Reduced |
| Susquehanna International Group, LLP | 235,235 | $9.76M | 0.01% | +173,421+280.6% | Added |
| Arrowstreet Capital, Limited Partnership | 230,903 | $9.58M | 0.00% | −215,849−48.3% | Reduced |
| Essex Investment Management Co LLC | 221,933 | $9.21M | 1.21% | −5,625−2.5% | Reduced |
| AQR Capital Management LLC | 194,477 | $8.07M | 0.00% | +9,722+5.3% | Added |
| Invesco Ltd. | 180,660 | $7.50M | 0.00% | −60,132−25.0% | Reduced |
| Russell Investments Group, Ltd. | 171,764 | $7.13M | 0.01% | +134,400+359.7% | Added |
| Jane Street Group, LLC | 170,319 | $7.07M | 0.00% | +170,319 | New |
| Mackenzie Financial Corp | 164,450 | $6.83M | 0.01% | +86,908+112.1% | Added |
| ArrowMark Colorado Holdings LLC | 159,432 | $6.62M | 0.28% | +24,000+17.7% | Added |
| Baird Financial Group, Inc. | 157,203 | $6.53M | 0.01% | −6,055−3.7% | Reduced |
| Palisades Investment Partners, LLC | 156,720 | $6.51M | 1.85% | +4,144+2.7% | Added |
| JPMorgan Chase & Co | 149,502 | $6.04M | 0.00% | +12,657+9.2% | Added |
| Bank of New York Mellon Corp | 143,968 | $5.98M | 0.00% | +9,178+6.8% | Added |
| Allspring Global Investments Holdings, LLC | 130,622 | $5.21M | 0.01% | −18,979−12.7% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 121,128 | $5.03M | 0.01% | +72,577+149.5% | Added |
| Raymond James Financial Inc | 118,801 | $4.93M | 0.00% | −5,153−4.2% | Reduced |
| Ameriprise Financial Inc | 111,856 | $4.64M | 0.00% | +49,520+79.4% | Added |
| GMT Capital Corp | 108,066 | $4.49M | 0.23% | 00.0% | Unchanged |
| Bank of America Corp | 106,216 | $4.41M | 0.00% | −103,235−49.3% | Reduced |
| Toroso Investments, LLC | 101,341 | $4.21M | 0.01% | +57,972+133.7% | Added |
| Millennium Management LLC | 100,762 | $4.18M | 0.00% | −814−0.8% | Reduced |
| Silvercrest Asset Management Group LLC | 100,026 | $4.15M | 0.03% | +100,026 | New |
| Holocene Advisors, LP | 95,716 | $3.97M | 0.01% | +83,588+689.2% | Added |
| Defiance ETFs, LLC | 99,395 | $3.97M | 0.06% | +57,168+135.4% | Added |
| UBS Asset Management Americas Inc | 91,267 | $3.79M | 0.00% | +2,881+3.3% | Added |
| Two Sigma Investments, LP | 90,340 | $3.75M | 0.00% | −78,676−46.5% | Reduced |
| Swiss National Bank | 88,600 | $3.68M | 0.00% | −500−0.6% | Reduced |
| Alps Advisors Inc | 86,387 | $3.59M | 0.02% | −174−0.2% | Reduced |
| Wellington Management Group LLP | 85,244 | $3.54M | 0.00% | +85,244 | New |
| SEI Investments Co | 85,215 | $3.54M | 0.00% | −139,221−62.0% | Reduced |
| Wells Fargo & Company | 83,306 | $3.46M | 0.00% | +25,148+43.2% | Added |
| Rice Hall James & Associates, LLC | 78,620 | $3.26M | 0.16% | +31,506+66.9% | Added |
| Lumbard & Kellner, LLC | 74,139 | $3.08M | 0.93% | +470+0.6% | Added |
| New York State Common Retirement Fund | 72,900 | $3.03M | 0.00% | +2,500+3.6% | Added |
| Balyasny Asset Management LLC | 68,847 | $2.86M | 0.01% | −75,297−52.2% | Reduced |
| Brown Capital Management LLC | 68,156 | $2.83M | 0.57% | +68,156 | New |
| Campbell Newman Asset Management Inc | 67,337 | $2.80M | 0.21% | +3,000+4.7% | Added |
| Rhumbline Advisers | 63,572 | $2.64M | 0.00% | +3,889+6.5% | Added |
| Amundi | 63,251 | $2.63M | 0.00% | +5,082+8.7% | Added |
| LPL Financial LLC | 57,385 | $2.38M | 0.00% | −29,938−34.3% | Reduced |
| Marshall Wace, LLP | 53,261 | $2.21M | 0.00% | +53,261 | New |
| Deutsche Bank AG | 51,992 | $2.16M | 0.00% | +9,074+21.1% | Added |
| California State Teachers Retirement System | 50,888 | $2.11M | 0.00% | −6,128−10.7% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 46,020 | $1.91M | 0.05% | +12,665+38.0% | Added |
| Alliancebernstein L.P. | 54,720 | $1.85M | 0.00% | +10,300+23.2% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 42,728 | $1.77M | 0.00% | +3,926+10.1% | Added |
| Legato Capital Management LLC | 41,369 | $1.72M | 0.14% | +1,248+3.1% | Added |
| Covestor Ltd | 41,348 | $1.72M | 0.99% | +41,344+1,033,600.0% | Added |
| Nissay Asset Management Corp | 37,914 | $1.57M | 0.01% | +12,527+49.3% | Added |
| Quadrature Capital Ltd | 37,682 | $1.56M | 0.01% | −1,458−3.7% | Reduced |
| Royal Bank of Canada | 35,656 | $1.48M | 0.00% | +4,320+13.8% | Added |
| Merit Financial Group, LLC | 35,471 | $1.47M | 0.01% | −1,447−3.9% | Reduced |
| Polymer Capital Management (US) LLC | 34,521 | $1.43M | 0.21% | +34,521 | New |
| Quantum Private Wealth, LLC | 33,823 | $1.40M | 0.36% | +2,600+8.3% | Added |
| Colony Group, LLC | 33,671 | $1.40M | 0.00% | +410+1.2% | Added |
| Franklin Resources Inc | 33,360 | $1.38M | 0.00% | +3,882+13.2% | Added |
| Truist Financial Corp | 32,700 | $1.36M | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 32,598 | $1.35M | 0.00% | +27,709+566.8% | Added |
| Vanguard Asset Management, Ltd | 32,589 | $1.35M | 0.00% | +3,301+11.3% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 32,145 | $1.33M | 0.00% | +19,246+149.2% | Added |
| Aquatic Capital Management LLC | 32,081 | $1.33M | 0.05% | +32,081 | New |
| Kornitzer Capital Management Inc | 31,669 | $1.31M | 0.03% | −3,304−9.4% | Reduced |
| XTX Topco Ltd | 30,848 | $1.28M | 0.02% | +30,848 | New |
| Oppenheimer & Co Inc | 30,060 | $1.25M | 0.01% | +4,776+18.9% | Added |
| Portolan Capital Management, LLC | 29,314 | $1.22M | 0.05% | −266,322−90.1% | Reduced |
| Virtus ETF Advisers LLC | 28,501 | $1.18M | 0.45% | +1,049+3.8% | Added |
| HighTower Advisors, LLC | 28,498 | $1.18M | 0.00% | −14,769−34.1% | Reduced |