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, Q4 2025
Institutional positions in American Superconductor Corp as of Dec 31, 2025. 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
- 240
- −29 vs. Q3 2025
- Shares held
- 33.1M
- +460.5K (+1.4%) vs. Q3 2025
- Total value
- $953.2M
- −$982.6M (−50.8%) vs. Q3 2025
- New holders
- 41
- 106 more added
- Sold out
- 70
- 64 more reduced
4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding American Superconductor Corp; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,750,403 | $107.9M | 0.00% | +121,107+3.3% | Added |
| Vanguard Group Inc | 3,526,632 | $101.5M | 0.00% | +576,831+19.6% | Added |
| Baillie Gifford & Co | 1,506,841 | $43.4M | 0.04% | +79,509+5.6% | Added |
| State Street Corp | 1,192,093 | $34.3M | 0.00% | +56,215+4.9% | Added |
| Geode Capital Management, LLC | 1,090,710 | $31.4M | 0.00% | +20,855+1.9% | Added |
| Atreides Management, LP | 1,044,193 | $30.1M | 0.64% | +272,698+35.3% | Added |
| Nuveen, LLC | 960,968 | $27.7M | 0.01% | +134,816+16.3% | Added |
| Oberweis Asset Management Inc | 835,900 | $24.1M | 0.88% | +170,200+25.6% | Added |
| Goldman Sachs Group Inc | 782,287 | $22.5M | 0.00% | −391,820−33.4% | Reduced |
| Emerald Advisers, LLC | 757,568 | $21.8M | 0.67% | +236,385+45.4% | Added |
| AWM Investment Company, Inc. | 754,220 | $21.7M | 2.10% | +8,750+1.2% | Added |
| UBS Group AG | 744,563 | $21.4M | 0.00% | +550,829+284.3% | Added |
| Morgan Stanley | 705,442 | $20.3M | 0.00% | +369,677+110.1% | Added |
| Arrowstreet Capital, Limited Partnership | 683,202 | $19.7M | 0.01% | −77,255−10.2% | Reduced |
| First Trust Advisors LP | 682,967 | $19.7M | 0.01% | +224,576+49.0% | Added |
| Telemark Asset Management, LLC | 619,900 | $17.8M | 1.78% | −70,100−10.2% | Reduced |
| Qube Research & Technologies Ltd | 599,006 | $17.2M | 0.02% | +341,411+132.5% | Added |
| Dimensional Fund Advisors LP | 540,253 | $15.5M | 0.00% | +68,769+14.6% | Added |
| Driehaus Capital Management LLC | 499,984 | $14.4M | 0.10% | −718,960−59.0% | Reduced |
| Algert Global LLC | 460,771 | $13.3M | 0.21% | +172,891+60.1% | Added |
| Nomura Asset Management International Inc. | 459,786 | $13.2M | 0.02% | +459,786 | New |
| D. E. Shaw & Co., Inc. | 443,148 | $12.8M | 0.01% | −309,555−41.1% | Reduced |
| Emerald Mutual Fund Advisers Trust | 435,246 | $12.5M | 0.61% | +127,509+41.4% | Added |
| Charles Schwab Investment Management Inc | 387,507 | $11.2M | 0.00% | −719−0.2% | Reduced |
| Royce & Associates LP | 387,069 | $11.1M | 0.11% | +29,489+8.2% | Added |
| Invesco Ltd. | 386,152 | $11.1M | 0.00% | +100,746+35.3% | Added |
| Northern Trust Corp | 360,806 | $10.4M | 0.00% | −31,461−8.0% | Reduced |
| Citadel Advisors LLC | 337,713 | $9.72M | 0.01% | +322,892+2,178.6% | Added |
| Two Sigma Investments, LP | 321,571 | $9.25M | 0.01% | +199,948+164.4% | Added |
| Legal & General Group Plc | 278,026 | $8.00M | 0.00% | +18,463+7.1% | Added |
| Price T Rowe Associates Inc | 274,844 | $7.91M | 0.00% | −121,488−30.7% | Reduced |
| Panagora Asset Management Inc | 254,785 | $7.33M | 0.03% | +52,191+25.8% | Added |
| Tudor Investment Corp Et Al | 251,642 | $7.24M | 0.04% | +76,603+43.8% | Added |
| Jane Street Group, LLC | 242,767 | $6.99M | 0.01% | +106,665+78.4% | Added |
| Allspring Global Investments Holdings, LLC | 204,678 | $6.46M | 0.01% | +5,107+2.6% | Added |
| Essex Investment Management Co LLC | 215,154 | $6.19M | 0.94% | −30,427−12.4% | Reduced |
| Stephens Investment Management Group LLC | 174,228 | $5.01M | 0.07% | +106,317+156.6% | Added |
| Bank of America Corp | 165,568 | $4.77M | 0.00% | −32,462−16.4% | Reduced |
| Balyasny Asset Management LLC | 152,795 | $4.40M | 0.01% | +152,795 | New |
| AQR Capital Management LLC | 145,965 | $4.20M | 0.00% | −22,786−13.5% | Reduced |
| Palisades Investment Partners, LLC | 144,209 | $4.15M | 1.57% | +3,100+2.2% | Added |
| Raymond James Financial Inc | 141,811 | $4.08M | 0.00% | −25,505−15.2% | Reduced |
| Renaissance Technologies LLC | 139,989 | $4.03M | 0.01% | −184,000−56.8% | Reduced |
| Bank of New York Mellon Corp | 137,042 | $3.94M | 0.00% | +3,522+2.6% | Added |
| Baird Financial Group, Inc. | 134,899 | $3.88M | 0.01% | +54,109+67.0% | Added |
| Axiom Investors LLC | 134,076 | $3.86M | 0.03% | −130,584−49.3% | Reduced |
| Wells Fargo & Company | 133,918 | $3.85M | 0.00% | −83,908−38.5% | Reduced |
| FMR LLC | 124,406 | $3.58M | 0.00% | +23,564+23.4% | Added |
| JPMorgan Chase & Co | 123,103 | $3.54M | 0.00% | +8,215+7.2% | Added |
| Y-Intercept (Hong Kong) Ltd | 120,251 | $3.46M | 0.08% | +120,251 | New |
| ArrowMark Colorado Holdings LLC | 110,432 | $3.18M | 0.07% | 00.0% | Unchanged |
| Swiss National Bank | 89,100 | $2.56M | 0.00% | +4,500+5.3% | Added |
| BNP Paribas Arbitrage, SA | 82,502 | $2.37M | 0.00% | +19,493+30.9% | Added |
| Capital Fund Management S.A. | 79,160 | $2.28M | 0.02% | +13,625+20.8% | Added |
| SEI Investments Co | 78,810 | $2.27M | 0.00% | +12,612+19.1% | Added |
| Millennium Management LLC | 78,088 | $2.25M | 0.00% | −44,414−36.3% | Reduced |
| Point72 Asset Management, L.P. | 77,457 | $2.23M | 0.00% | +44,234+133.1% | Added |
| UBS Asset Management Americas Inc | 77,207 | $2.22M | 0.00% | −5,430−6.6% | Reduced |
| Victory Capital Management Inc | 76,882 | $2.21M | 0.00% | +35,493+85.8% | Added |
| Barclays PLC | 73,805 | $2.12M | 0.00% | +11,242+18.0% | Added |
| Lumbard & Kellner, LLC | 71,161 | $2.05M | 0.72% | −1,278−1.8% | Reduced |
| SG Americas Securities, LLC | 70,992 | $2.04M | 0.00% | +39,169+123.1% | Added |
| ExodusPoint Capital Management, LP | 70,751 | $2.04M | 0.02% | +70,751 | New |
| New York State Common Retirement Fund | 70,400 | $2.03M | 0.00% | +1,700+2.5% | Added |
| HRT Financial LP | 69,724 | $2.01M | 0.01% | +63,530+1,025.7% | Added |
| Dynamic Technology Lab Private Ltd | 69,225 | $1.99M | 0.45% | +69,225 | New |
| Susquehanna International Group, LLP | 65,625 | $1.89M | 0.00% | −61,546−48.4% | Reduced |
| Kennedy Capital Management, Inc. | 64,625 | $1.86M | 0.04% | +240.0% | Added |
| Walleye Capital LLC | 64,520 | $1.86M | 0.01% | +64,520 | New |
| Campbell Newman Asset Management Inc | 63,148 | $1.82M | 0.13% | −2,217−3.4% | Reduced |
| Alps Advisors Inc | 62,242 | $1.79M | 0.01% | −4,083−6.2% | Reduced |
| Aquatic Capital Management LLC | 61,352 | $1.77M | 0.05% | +7,479+13.9% | Added |
| Campbell & CO Investment Adviser LLC | 59,952 | $1.73M | 0.08% | +59,952 | New |
| Ameriprise Financial Inc | 58,956 | $1.70M | 0.00% | +39,935+210.0% | Added |
| Principal Financial Group Inc | 58,950 | $1.70M | 0.00% | +19,547+49.6% | Added |
| Rhumbline Advisers | 57,693 | $1.66M | 0.00% | −12,732−18.1% | Reduced |
| Los Angeles Capital Management LLC | 25,637 | $1.51M | 0.01% | 00.0% | Unchanged |
| Twinbeech Capital LP | 52,221 | $1.50M | 0.11% | +52,221 | New |
| California State Teachers Retirement System | 50,911 | $1.47M | 0.00% | +234+0.5% | Added |
| Rice Hall James & Associates, LLC | 47,114 | $1.36M | 0.07% | −13,610−22.4% | Reduced |
| Two Sigma Advisers, LP | 47,100 | $1.36M | 0.00% | +32,700+227.1% | Added |
| Janney Montgomery Scott LLC | 46,381 | $1.33M | 0.00% | +650+1.4% | Added |
| Amundi | 46,316 | $1.33M | 0.00% | +4,586+11.0% | Added |
| Freestone Grove Partners LP | 46,128 | $1.33M | 0.01% | +46,128 | New |
| Royal Bank of Canada | 45,133 | $1.30M | 0.00% | +1,770+4.1% | Added |
| Legato Capital Management LLC | 40,687 | $1.17M | 0.10% | −18,161−30.9% | Reduced |
| Mackenzie Financial Corp | 40,245 | $1.16M | 0.00% | +5,956+17.4% | Added |
| LPL Financial LLC | 40,074 | $1.15M | 0.00% | −8,619−17.7% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 39,600 | $1.14M | 0.00% | +4,523+12.9% | Added |
| Alliancebernstein L.P. | 39,320 | $1.13M | 0.00% | 00.0% | Unchanged |
| Deutsche Bank AG | 38,723 | $1.11M | 0.00% | +2,589+7.2% | Added |
| Merit Financial Group, LLC | 37,281 | $1.07M | 0.01% | +5,426+17.0% | Added |
| Verition Fund Management LLC | 37,200 | $1.07M | 0.01% | −33,986−47.7% | Reduced |
| Engineers Gate Manager LP | 36,587 | $1.05M | 0.01% | −60,908−62.5% | Reduced |
| Kornitzer Capital Management Inc | 36,154 | $1.04M | 0.02% | +3,154+9.6% | Added |
| Man Group plc | 36,094 | $1.04M | 0.00% | +19,980+124.0% | Added |
| Natixis | 35,086 | $1.01M | 0.00% | +35,086 | New |
| Franklin Resources Inc | 35,072 | $1.01M | 0.00% | +34,806+13,085.0% | Added |
| Russell Investments Group, Ltd. | 35,065 | $1.01M | 0.00% | +12,672+56.6% | Added |
| Headlands Technologies LLC | 34,308 | $987.4K | 0.08% | +34,308 | New |