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, Q1 2026
Institutional positions in American Superconductor Corp as of Mar 31, 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
- 245
- +11 vs. Q4 2025
- Shares held
- 33.2M
- +3.66M (+12.4%) vs. Q4 2025
- Total value
- $1.12B
- +$271.6M (+31.9%) vs. Q4 2025
- New holders
- 55
- 100 more added
- Sold out
- 44
- 62 more reduced
6 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: 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, Q1 2026
Shares, value and share of portfolio for each institution holding American Superconductor Corp; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Balyasny Asset Management LLC | 144,144 | $4.88M | 0.01% | −8,651−5.7% | Reduced |
| Allspring Global Investments Holdings, LLC | 149,601 | $4.88M | 0.01% | −55,077−26.9% | Reduced |
| FMR LLC | 147,293 | $4.99M | 0.00% | +22,887+18.4% | Added |
| Palisades Investment Partners, LLC | 152,576 | $5.16M | 2.02% | +8,367+5.8% | Added |
| Baird Financial Group, Inc. | 163,258 | $5.53M | 0.01% | +28,359+21.0% | Added |
| Two Sigma Investments, LP | 169,016 | $5.72M | 0.00% | −152,555−47.4% | Reduced |
| AQR Capital Management LLC | 184,755 | $6.25M | 0.00% | +38,790+26.6% | Added |
| Bank of America Corp | 209,451 | $7.09M | 0.00% | +43,883+26.5% | Added |
| Citadel Advisors LLC | 216,713 | $7.34M | 0.01% | −121,000−35.8% | Reduced |
| SEI Investments Co | 224,436 | $7.60M | 0.01% | +145,626+184.8% | Added |
| Essex Investment Management Co LLC | 227,558 | $7.70M | 1.22% | +12,404+5.8% | Added |
| Invesco Ltd. | 240,792 | $8.15M | 0.00% | −145,360−37.6% | Reduced |
| Panagora Asset Management Inc | 256,392 | $8.68M | 0.03% | +1,607+0.6% | Added |
| Portolan Capital Management, LLC | 295,636 | $10.0M | 0.53% | +295,636 | New |
| Stephens Investment Management Group LLC | 308,515 | $10.4M | 0.14% | +134,287+77.1% | Added |
| Vanguard Fiduciary Trust Co | 326,042 | $11.0M | 0.00% | +326,042 | New |
| Qube Research & Technologies Ltd | 329,413 | $11.2M | 0.02% | −269,593−45.0% | Reduced |
| Nomura Asset Management International Inc. | 379,483 | $12.8M | 0.02% | −80,303−17.5% | Reduced |
| Charles Schwab Investment Management Inc | 385,414 | $13.0M | 0.00% | −2,093−0.5% | Reduced |
| Northern Trust Corp | 393,224 | $13.3M | 0.00% | +32,418+9.0% | Added |
| Hood River Capital Management LLC | 398,711 | $13.5M | 0.14% | +398,711 | New |
| BNP Paribas Arbitrage, SA | 436,687 | $14.8M | 0.01% | +354,185+429.3% | Added |
| Emerald Mutual Fund Advisers Trust | 438,875 | $14.9M | 0.72% | +3,629+0.8% | Added |
| Arrowstreet Capital, Limited Partnership | 446,752 | $15.1M | 0.01% | −236,450−34.6% | Reduced |
| Algert Global LLC | 489,971 | $16.6M | 0.25% | +29,200+6.3% | Added |
| Legal & General Group Plc | 530,131 | $17.9M | 0.00% | +252,105+90.7% | Added |
| Royce & Associates LP | 542,778 | $18.4M | 0.18% | +155,709+40.2% | Added |
| D. E. Shaw & Co., Inc. | 567,574 | $19.2M | 0.02% | +124,426+28.1% | Added |
| UBS Group AG | 599,821 | $20.3M | 0.00% | −144,742−19.4% | Reduced |
| Telemark Asset Management, LLC | 600,000 | $20.3M | 1.88% | −19,900−3.2% | Reduced |
| Morgan Stanley | 633,841 | $21.5M | 0.00% | −71,601−10.1% | Reduced |
| Dimensional Fund Advisors LP | 658,297 | $22.3M | 0.00% | +118,044+21.8% | Added |
| Goldman Sachs Group Inc | 709,504 | $24.0M | 0.00% | −72,783−9.3% | Reduced |
| Emerald Advisers, LLC | 757,404 | $25.6M | 0.81% | −1640.0% | Reduced |
| First Trust Advisors LP | 778,268 | $26.3M | 0.02% | +95,301+14.0% | Added |
| AWM Investment Company, Inc. | 801,604 | $27.1M | 3.00% | +47,384+6.3% | Added |
| Oberweis Asset Management Inc | 849,900 | $28.8M | 0.85% | +14,000+1.7% | Added |
| Nuveen, LLC | 1,020,947 | $34.6M | 0.01% | +59,979+6.2% | Added |
| Barrow Hanley Mewhinney & Strauss LLC | 1,139,793 | $38.6M | 0.13% | +1,139,793 | New |
| Geode Capital Management, LLC | 1,169,152 | $39.6M | 0.00% | +78,442+7.2% | Added |
| State Street Corp | 1,261,071 | $42.7M | 0.00% | +68,978+5.8% | Added |
| Baillie Gifford & Co | 1,447,419 | $49.0M | 0.05% | −59,422−3.9% | Reduced |
| Vanguard Portfolio Management LLC | 1,711,677 | $57.9M | 0.00% | +1,711,677 | New |
| Vanguard Capital Management LLC | 2,039,468 | $69.0M | 0.00% | +2,039,468 | New |
| BlackRock, Inc. | 3,982,650 | $134.8M | 0.00% | +232,247+6.2% | Added |
| Atreides Management, LP | 0 | $0 | 0.00% | −1,044,193−100.0% | Sold out |
| Driehaus Capital Management LLC | 0 | $0 | 0.00% | −499,984−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −251,642−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −242,767−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −139,989−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −120,251−100.0% | Sold out |
| Capital Fund Management S.A. | 0 | $0 | 0.00% | −79,160−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −77,457−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −69,724−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −69,225−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −61,352−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −59,952−100.0% | Sold out |
| Principal Financial Group Inc | 0 | $0 | 0.00% | −58,950−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −52,221−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −47,100−100.0% | Sold out |
| Freestone Grove Partners LP | 0 | $0 | 0.00% | −46,128−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −37,200−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −36,587−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −36,094−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −35,086−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −31,166−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −26,695−100.0% | Sold out |
| Polen Capital Management LLC | 0 | $0 | 0.00% | −23,565−100.0% | Sold out |
| Alpine Woods Capital Investors, LLC | 0 | $0 | 0.00% | −23,026−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −21,186−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −20,999−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −14,944−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −13,863−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −13,990−100.0% | Sold out |
| Entropy Technologies, LP | 0 | $0 | 0.00% | −13,457−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −11,582−100.0% | Sold out |
| State of Wisconsin Investment Board | 0 | $0 | 0.00% | −11,227−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −10,551−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −10,066−100.0% | Sold out |
| Precision Wealth Strategies, LLC | 0 | $0 | 0.00% | −8,137−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −7,175−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −6,923−100.0% | Sold out |
| Steward Partners Investment Advisory, LLC | 0 | $0 | 0.00% | −5,625−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −2,092−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −1,373−100.0% | Sold out |
| Greenline Wealth Management LLC | 0 | $0 | 0.00% | −169−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −71−100.0% | Sold out |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −34−100.0% | Sold out |
| Turning Point Benefit Group, Inc. | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Skyview Financial Group LLC | – | – | – | – | Not filed |
| GPS Wealth Strategies Group, LLC | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| Trust Co of Vermont | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |