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 |
|---|---|---|---|---|---|
| Vanguard Investments Australia, Ltd. | 10,492 | $355.2K | 0.00% | +10,492 | New |
| Advisor Group Holdings, Inc. | 10,591 | $358.5K | 0.00% | −615−5.5% | Reduced |
| ROI Financial Advisors, LLC | 10,731 | $363.2K | 0.22% | +598+5.9% | Added |
| Credit Agricole S A | 10,745 | $363.7K | 0.00% | −10,300−48.9% | Reduced |
| Commonwealth Equity Services, LLC | 10,793 | $365.3K | 0.00% | +696+6.9% | Added |
| ProShare Advisors LLC | 10,955 | $370.8K | 0.00% | −699−6.0% | Reduced |
| City Center Advisors, LLC | 11,118 | $376.3K | 0.35% | +3,601+47.9% | Added |
| Winton Group Ltd | 11,266 | $381.4K | 0.01% | +1,881+20.0% | Added |
| Holocene Advisors, LP | 12,128 | $410.5K | 0.00% | +12,128 | New |
| Group One Trading, L.P. | 12,278 | $415.6K | 0.01% | +9,237+303.7% | Added |
| Arizona State Retirement System | 12,411 | $420.1K | 0.00% | −113−0.9% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 12,674 | $429.0K | 0.00% | +1,232+10.8% | Added |
| Integrated Quantitative Investments LLC | 12,868 | $435.6K | 0.08% | +12,868 | New |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 12,899 | $436.6K | 0.00% | −378−2.8% | Reduced |
| Quantinno Capital Management LP | 13,002 | $440.1K | 0.00% | +60+0.5% | Added |
| Cinctive Capital Management LP | 13,833 | $468.2K | 0.03% | +13,833 | New |
| Diversified Trust Co | 13,936 | $471.7K | 0.01% | +1,625+13.2% | Added |
| Aviva PLC | 14,134 | $478.4K | 0.00% | +14,134 | New |
| Voya Investment Management LLC | 14,242 | $482.1K | 0.00% | −121−0.8% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 15,122 | $511.9K | 0.00% | +941+6.6% | Added |
| Canada Pension Plan Investment Board | 15,200 | $514.5K | 0.00% | −6,600−30.3% | Reduced |
| Traynor Capital Management, Inc. | 16,209 | $522.1K | 0.03% | +52+0.3% | Added |
| PFG Investments, LLC | 15,830 | $535.8K | 0.02% | +15,830 | New |
| Advisory Services Network, LLC | 16,677 | $564.5K | 0.01% | +281+1.7% | Added |
| TFC Financial Management | 16,741 | $566.7K | 0.07% | 00.0% | Unchanged |
| Truvestments Capital LLC | 16,872 | $571.1K | 0.10% | +1,422+9.2% | Added |
| F/M Investments LLC | 17,099 | $578.8K | 0.04% | +3,629+26.9% | Added |
| GoalVest Advisory LLC | 17,400 | $589.0K | 0.12% | −500−2.8% | Reduced |
| Barclays PLC | 17,514 | $592.8K | 0.00% | −56,291−76.3% | Reduced |
| STRS Ohio | 17,700 | $599.1K | 0.00% | −3,500−16.5% | Reduced |
| Intech Investment Management LLC | 18,079 | $612.0K | 0.01% | −8,017−30.7% | Reduced |
| Assenagon Asset Management S.A. | 18,679 | $632.3K | 0.00% | +9,790+110.1% | Added |
| Virginia Retirement Systems Et Al | 18,800 | $636.4K | 0.00% | +2,300+13.9% | Added |
| Vanguard Global Advisers, LLC | 19,494 | $659.9K | 0.00% | +19,494 | New |
| Janus Henderson Group PLC | 20,134 | $681.1K | 0.00% | 00.0% | Unchanged |
| Dark Forest Capital Management LP | 20,276 | $686.3K | 0.06% | +20,276 | New |
| Round Rock Advisors, LLC | 20,340 | $688.5K | 0.11% | +9,631+89.9% | Added |
| Manufacturers Life Insurance Company, The | 20,828 | $705.0K | 0.00% | +404+2.0% | Added |
| Dorsey & Whitney Trust CO LLC | 21,611 | $731.5K | 0.04% | 00.0% | Unchanged |
| Globeflex Capital L P | 21,633 | $732.3K | 0.11% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 22,248 | $753.1K | 0.00% | −112−0.5% | Reduced |
| Verity Asset Management, Inc. | 22,280 | $754.2K | 0.32% | +22,280 | New |
| State Board of Administration of Florida Retirement System | 24,264 | $821.3K | 0.00% | 00.0% | Unchanged |
| Ardsley Advisory Partners LP | 25,000 | $846.3K | 0.13% | +25,000 | New |
| Mariner, LLC | 25,150 | $851.3K | 0.00% | +4,587+22.3% | Added |
| Oppenheimer & Co Inc | 25,284 | $855.9K | 0.01% | +25,284 | New |
| Nissay Asset Management Corp | 25,387 | $859.4K | 0.00% | +4,885+23.8% | Added |
| MetLife Investment Management | 25,691 | $869.6K | 0.00% | +286+1.1% | Added |
| ExodusPoint Capital Management, LP | 26,490 | $896.7K | 0.01% | −44,261−62.6% | Reduced |
| Virtus ETF Advisers LLC | 27,452 | $929.3K | 0.43% | +1,462+5.6% | Added |
| Vanguard Asset Management, Ltd | 29,288 | $991.4K | 0.00% | +29,288 | New |
| Franklin Resources Inc | 29,478 | $997.8K | 0.00% | −5,594−16.0% | Reduced |
| Journey Strategic Wealth LLC | 31,117 | $1.05M | 0.03% | +4,720+17.9% | Added |
| Quantum Private Wealth, LLC | 31,223 | $1.06M | 0.33% | +2,000+6.8% | Added |
| Royal Bank of Canada | 31,336 | $1.06M | 0.00% | −13,797−30.6% | Reduced |
| Truist Financial Corp | 32,700 | $1.11M | 0.00% | 00.0% | Unchanged |
| Colony Group, LLC | 33,261 | $1.13M | 0.00% | −1,042−3.0% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 33,355 | $1.13M | 0.04% | +14,000+72.3% | Added |
| Kornitzer Capital Management Inc | 34,973 | $1.18M | 0.03% | −1,181−3.3% | Reduced |
| SG Americas Securities, LLC | 35,385 | $1.20M | 0.00% | −35,607−50.2% | Reduced |
| Merit Financial Group, LLC | 36,918 | $1.25M | 0.01% | −363−1.0% | Reduced |
| Russell Investments Group, Ltd. | 37,364 | $1.26M | 0.00% | +2,299+6.6% | Added |
| Alliancebernstein L.P. | 44,420 | $1.28M | 0.00% | +5,100+13.0% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 38,802 | $1.31M | 0.00% | +5,988+18.2% | Added |
| Quadrature Capital Ltd | 39,140 | $1.32M | 0.02% | +39,140 | New |
| Legato Capital Management LLC | 40,121 | $1.36M | 0.12% | −566−1.4% | Reduced |
| Defiance ETFs, LLC | 42,227 | $1.43M | 0.02% | +42,227 | New |
| Deutsche Bank AG | 42,918 | $1.45M | 0.00% | +4,195+10.8% | Added |
| HighTower Advisors, LLC | 43,267 | $1.46M | 0.00% | +32,788+312.9% | Added |
| Toroso Investments, LLC | 43,369 | $1.47M | 0.00% | +19,184+79.3% | Added |
| Los Angeles Capital Management LLC | 43,512 | $1.47M | 0.01% | +17,875+69.7% | Added |
| Rice Hall James & Associates, LLC | 47,114 | $1.59M | 0.09% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 48,551 | $1.64M | 0.00% | +8,951+22.6% | Added |
| Lazard Asset Management LLC | 56,452 | $1.91M | 0.00% | +56,452 | New |
| Janney Montgomery Scott LLC | 56,946 | $1.93M | 0.00% | +10,565+22.8% | Added |
| California State Teachers Retirement System | 57,016 | $1.93M | 0.00% | +6,105+12.0% | Added |
| Wells Fargo & Company | 58,158 | $1.97M | 0.00% | −75,760−56.6% | Reduced |
| Amundi | 58,169 | $1.97M | 0.00% | +11,853+25.6% | Added |
| Price T Rowe Associates Inc | 58,612 | $1.99M | 0.00% | −216,232−78.7% | Reduced |
| Rhumbline Advisers | 59,683 | $2.02M | 0.00% | +1,990+3.4% | Added |
| Susquehanna International Group, LLP | 61,814 | $2.09M | 0.00% | −3,811−5.8% | Reduced |
| Ameriprise Financial Inc | 62,336 | $2.11M | 0.00% | +3,380+5.7% | Added |
| Campbell Newman Asset Management Inc | 64,337 | $2.18M | 0.18% | +1,189+1.9% | Added |
| Boston Partners | 66,071 | $2.24M | 0.00% | +66,071 | New |
| Kennedy Capital Management, Inc. | 66,167 | $2.24M | 0.05% | +1,542+2.4% | Added |
| New York State Common Retirement Fund | 70,400 | $2.38M | 0.00% | 00.0% | Unchanged |
| Lumbard & Kellner, LLC | 73,669 | $2.49M | 0.86% | +2,508+3.5% | Added |
| Maxi Investments CY Ltd | 75,754 | $2.56M | 0.56% | +75,754 | New |
| Mackenzie Financial Corp | 77,542 | $2.62M | 0.00% | +37,297+92.7% | Added |
| Alps Advisors Inc | 86,561 | $2.93M | 0.01% | +24,319+39.1% | Added |
| LPL Financial LLC | 87,323 | $2.96M | 0.00% | +47,249+117.9% | Added |
| UBS Asset Management Americas Inc | 88,386 | $2.99M | 0.00% | +11,179+14.5% | Added |
| Swiss National Bank | 89,100 | $3.02M | 0.00% | 00.0% | Unchanged |
| Axiom Investors LLC | 100,814 | $3.41M | 0.04% | −33,262−24.8% | Reduced |
| Millennium Management LLC | 101,576 | $3.44M | 0.00% | +23,488+30.1% | Added |
| GMT Capital Corp | 108,066 | $3.66M | 0.17% | +108,066 | New |
| Raymond James Financial Inc | 123,954 | $4.20M | 0.00% | −17,857−12.6% | Reduced |
| JPMorgan Chase & Co | 136,845 | $4.41M | 0.00% | +13,742+11.2% | Added |
| Bank of New York Mellon Corp | 134,790 | $4.56M | 0.00% | −2,252−1.6% | Reduced |
| ArrowMark Colorado Holdings LLC | 135,432 | $4.58M | 0.12% | +25,000+22.6% | Added |