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
- +3.65M (+12.4%) vs. Q4 2025
- Total value
- $1.12B
- +$271.3M (+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 | $953.6M |
| 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, 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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,982,650 | $134.8M | 0.00% | +232,247+6.2% | Added |
| Vanguard Capital Management LLC | 2,039,468 | $69.0M | 0.00% | +2,039,468 | New |
| Vanguard Portfolio Management LLC | 1,711,677 | $57.9M | 0.00% | +1,711,677 | New |
| Baillie Gifford & Co | 1,447,419 | $49.0M | 0.05% | −59,422−3.9% | Reduced |
| State Street Corp | 1,261,071 | $42.7M | 0.00% | +68,978+5.8% | Added |
| Geode Capital Management, LLC | 1,169,152 | $39.6M | 0.00% | +78,442+7.2% | Added |
| Barrow Hanley Mewhinney & Strauss LLC | 1,139,793 | $38.6M | 0.13% | +1,139,793 | New |
| Nuveen, LLC | 1,020,947 | $34.6M | 0.01% | +59,979+6.2% | Added |
| Oberweis Asset Management Inc | 849,900 | $28.8M | 0.85% | +14,000+1.7% | Added |
| AWM Investment Company, Inc. | 801,604 | $27.1M | 3.00% | +47,384+6.3% | Added |
| First Trust Advisors LP | 778,268 | $26.3M | 0.02% | +95,301+14.0% | Added |
| Emerald Advisers, LLC | 757,404 | $25.6M | 0.81% | −1640.0% | Reduced |
| Goldman Sachs Group Inc | 709,504 | $24.0M | 0.00% | −72,783−9.3% | Reduced |
| Dimensional Fund Advisors LP | 658,297 | $22.3M | 0.00% | +118,044+21.8% | Added |
| Morgan Stanley | 633,841 | $21.5M | 0.00% | −71,601−10.1% | Reduced |
| Telemark Asset Management, LLC | 600,000 | $20.3M | 1.88% | −19,900−3.2% | Reduced |
| UBS Group AG | 599,821 | $20.3M | 0.00% | −144,742−19.4% | Reduced |
| D. E. Shaw & Co., Inc. | 567,574 | $19.2M | 0.02% | +124,426+28.1% | Added |
| Royce & Associates LP | 542,778 | $18.4M | 0.18% | +155,709+40.2% | Added |
| Legal & General Group Plc | 530,131 | $17.9M | 0.00% | +252,105+90.7% | Added |
| Algert Global LLC | 489,971 | $16.6M | 0.25% | +29,200+6.3% | Added |
| Arrowstreet Capital, Limited Partnership | 446,752 | $15.1M | 0.01% | −236,450−34.6% | Reduced |
| Emerald Mutual Fund Advisers Trust | 438,875 | $14.9M | 0.72% | +3,629+0.8% | Added |
| BNP Paribas Arbitrage, SA | 436,687 | $14.8M | 0.01% | +354,185+429.3% | Added |
| Hood River Capital Management LLC | 398,711 | $13.5M | 0.14% | +398,711 | New |
| Northern Trust Corp | 393,224 | $13.3M | 0.00% | +32,418+9.0% | Added |
| Charles Schwab Investment Management Inc | 385,414 | $13.0M | 0.00% | −2,093−0.5% | Reduced |
| Nomura Asset Management International Inc. | 379,483 | $12.8M | 0.02% | −80,303−17.5% | Reduced |
| Qube Research & Technologies Ltd | 329,413 | $11.2M | 0.02% | −269,593−45.0% | Reduced |
| Vanguard Fiduciary Trust Co | 326,042 | $11.0M | 0.00% | +326,042 | New |
| Stephens Investment Management Group LLC | 308,515 | $10.4M | 0.14% | +134,287+77.1% | Added |
| Portolan Capital Management, LLC | 295,636 | $10.0M | 0.53% | +295,636 | New |
| Panagora Asset Management Inc | 256,392 | $8.68M | 0.03% | +1,607+0.6% | Added |
| Invesco Ltd. | 240,792 | $8.15M | 0.00% | −145,360−37.6% | Reduced |
| Essex Investment Management Co LLC | 227,558 | $7.70M | 1.22% | +12,404+5.8% | Added |
| SEI Investments Co | 224,436 | $7.60M | 0.01% | +145,626+184.8% | Added |
| Citadel Advisors LLC | 216,713 | $7.34M | 0.01% | −121,000−35.8% | Reduced |
| Bank of America Corp | 209,451 | $7.09M | 0.00% | +43,883+26.5% | Added |
| AQR Capital Management LLC | 184,755 | $6.25M | 0.00% | +38,790+26.6% | Added |
| Two Sigma Investments, LP | 169,016 | $5.72M | 0.00% | −152,555−47.4% | Reduced |
| Baird Financial Group, Inc. | 163,258 | $5.53M | 0.01% | +28,359+21.0% | Added |
| Palisades Investment Partners, LLC | 152,576 | $5.16M | 2.02% | +8,367+5.8% | Added |
| FMR LLC | 147,293 | $4.99M | 0.00% | +22,887+18.4% | Added |
| Allspring Global Investments Holdings, LLC | 149,601 | $4.88M | 0.01% | −55,077−26.9% | Reduced |
| Balyasny Asset Management LLC | 144,144 | $4.88M | 0.01% | −8,651−5.7% | Reduced |
| ArrowMark Colorado Holdings LLC | 135,432 | $4.58M | 0.12% | +25,000+22.6% | Added |
| Bank of New York Mellon Corp | 134,790 | $4.56M | 0.00% | −2,252−1.6% | Reduced |
| JPMorgan Chase & Co | 136,845 | $4.41M | 0.00% | +13,742+11.2% | Added |
| Raymond James Financial Inc | 123,954 | $4.20M | 0.00% | −17,857−12.6% | Reduced |
| GMT Capital Corp | 108,066 | $3.66M | 0.17% | +108,066 | New |
| Millennium Management LLC | 101,576 | $3.44M | 0.00% | +23,488+30.1% | Added |
| Axiom Investors LLC | 100,814 | $3.41M | 0.04% | −33,262−24.8% | Reduced |
| Swiss National Bank | 89,100 | $3.02M | 0.00% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 88,386 | $2.99M | 0.00% | +11,179+14.5% | Added |
| LPL Financial LLC | 87,323 | $2.96M | 0.00% | +47,249+117.9% | Added |
| Alps Advisors Inc | 86,561 | $2.93M | 0.01% | +24,319+39.1% | Added |
| Mackenzie Financial Corp | 77,542 | $2.62M | 0.00% | +37,297+92.7% | Added |
| Maxi Investments CY Ltd | 75,754 | $2.56M | 0.56% | +75,754 | New |
| Lumbard & Kellner, LLC | 73,669 | $2.49M | 0.86% | +2,508+3.5% | Added |
| New York State Common Retirement Fund | 70,400 | $2.38M | 0.00% | 00.0% | Unchanged |
| Kennedy Capital Management, Inc. | 66,167 | $2.24M | 0.05% | +1,542+2.4% | Added |
| Boston Partners | 66,071 | $2.24M | 0.00% | +66,071 | New |
| Campbell Newman Asset Management Inc | 64,337 | $2.18M | 0.18% | +1,189+1.9% | Added |
| Ameriprise Financial Inc | 62,336 | $2.11M | 0.00% | +3,380+5.7% | Added |
| Susquehanna International Group, LLP | 61,814 | $2.09M | 0.00% | −3,811−5.8% | Reduced |
| Rhumbline Advisers | 59,683 | $2.02M | 0.00% | +1,990+3.4% | Added |
| Price T Rowe Associates Inc | 58,612 | $1.99M | 0.00% | −216,232−78.7% | Reduced |
| Amundi | 58,169 | $1.97M | 0.00% | +11,853+25.6% | Added |
| Wells Fargo & Company | 58,158 | $1.97M | 0.00% | −75,760−56.6% | Reduced |
| California State Teachers Retirement System | 57,016 | $1.93M | 0.00% | +6,105+12.0% | Added |
| Janney Montgomery Scott LLC | 56,946 | $1.93M | 0.00% | +10,565+22.8% | Added |
| Lazard Asset Management LLC | 56,452 | $1.91M | 0.00% | +56,452 | New |
| Cambridge Investment Research Advisors, Inc. | 48,551 | $1.64M | 0.00% | +8,951+22.6% | Added |
| Rice Hall James & Associates, LLC | 47,114 | $1.59M | 0.09% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 43,512 | $1.47M | 0.01% | +17,875+69.7% | Added |
| Toroso Investments, LLC | 43,369 | $1.47M | 0.00% | +19,184+79.3% | Added |
| HighTower Advisors, LLC | 43,267 | $1.46M | 0.00% | +32,788+312.9% | Added |
| Deutsche Bank AG | 42,918 | $1.45M | 0.00% | +4,195+10.8% | Added |
| Defiance ETFs, LLC | 42,227 | $1.43M | 0.02% | +42,227 | New |
| Legato Capital Management LLC | 40,121 | $1.36M | 0.12% | −566−1.4% | Reduced |
| Quadrature Capital Ltd | 39,140 | $1.32M | 0.02% | +39,140 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 38,802 | $1.31M | 0.00% | +5,988+18.2% | Added |
| Alliancebernstein L.P. | 44,420 | $1.28M | 0.00% | +5,100+13.0% | Added |
| Russell Investments Group, Ltd. | 37,364 | $1.26M | 0.00% | +2,299+6.6% | Added |
| Merit Financial Group, LLC | 36,918 | $1.25M | 0.01% | −363−1.0% | Reduced |
| SG Americas Securities, LLC | 35,385 | $1.20M | 0.00% | −35,607−50.2% | Reduced |
| Kornitzer Capital Management Inc | 34,973 | $1.18M | 0.03% | −1,181−3.3% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 33,355 | $1.13M | 0.04% | +14,000+72.3% | Added |
| Colony Group, LLC | 33,261 | $1.13M | 0.00% | −1,042−3.0% | Reduced |
| Truist Financial Corp | 32,700 | $1.11M | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 31,336 | $1.06M | 0.00% | −13,797−30.6% | Reduced |
| Quantum Private Wealth, LLC | 31,223 | $1.06M | 0.33% | +2,000+6.8% | Added |
| Journey Strategic Wealth LLC | 31,117 | $1.05M | 0.03% | +4,720+17.9% | Added |
| Franklin Resources Inc | 29,478 | $997.8K | 0.00% | −5,594−16.0% | Reduced |
| Vanguard Asset Management, Ltd | 29,288 | $991.4K | 0.00% | +29,288 | New |
| Virtus ETF Advisers LLC | 27,452 | $929.3K | 0.43% | +1,462+5.6% | Added |
| ExodusPoint Capital Management, LP | 26,490 | $896.7K | 0.01% | −44,261−62.6% | Reduced |
| MetLife Investment Management | 25,691 | $869.6K | 0.00% | +286+1.1% | Added |
| Nissay Asset Management Corp | 25,387 | $859.4K | 0.00% | +4,885+23.8% | Added |
| Oppenheimer & Co Inc | 25,284 | $855.9K | 0.01% | +25,284 | New |