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 |
|---|---|---|---|---|---|
| Mariner, LLC | 25,150 | $851.3K | 0.00% | +4,587+22.3% | Added |
| Ardsley Advisory Partners LP | 25,000 | $846.3K | 0.13% | +25,000 | New |
| State Board of Administration of Florida Retirement System | 24,264 | $821.3K | 0.00% | 00.0% | Unchanged |
| Verity Asset Management, Inc. | 22,280 | $754.2K | 0.32% | +22,280 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 22,248 | $753.1K | 0.00% | −112−0.5% | Reduced |
| Globeflex Capital L P | 21,633 | $732.3K | 0.11% | 00.0% | Unchanged |
| Dorsey & Whitney Trust CO LLC | 21,611 | $731.5K | 0.04% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 20,828 | $705.0K | 0.00% | +404+2.0% | Added |
| Round Rock Advisors, LLC | 20,340 | $688.5K | 0.11% | +9,631+89.9% | Added |
| Dark Forest Capital Management LP | 20,276 | $686.3K | 0.06% | +20,276 | New |
| Janus Henderson Group PLC | 20,134 | $681.1K | 0.00% | 00.0% | Unchanged |
| Vanguard Global Advisers, LLC | 19,494 | $659.9K | 0.00% | +19,494 | New |
| Virginia Retirement Systems Et Al | 18,800 | $636.4K | 0.00% | +2,300+13.9% | Added |
| Assenagon Asset Management S.A. | 18,679 | $632.3K | 0.00% | +9,790+110.1% | Added |
| Intech Investment Management LLC | 18,079 | $612.0K | 0.01% | −8,017−30.7% | Reduced |
| STRS Ohio | 17,700 | $599.1K | 0.00% | −3,500−16.5% | Reduced |
| Barclays PLC | 17,514 | $592.8K | 0.00% | −56,291−76.3% | Reduced |
| GoalVest Advisory LLC | 17,400 | $589.0K | 0.12% | −500−2.8% | Reduced |
| F/M Investments LLC | 17,099 | $578.8K | 0.04% | +3,629+26.9% | Added |
| Truvestments Capital LLC | 16,872 | $571.1K | 0.10% | +1,422+9.2% | Added |
| TFC Financial Management | 16,741 | $566.7K | 0.07% | 00.0% | Unchanged |
| Advisory Services Network, LLC | 16,677 | $564.5K | 0.01% | +281+1.7% | Added |
| PFG Investments, LLC | 15,830 | $535.8K | 0.02% | +15,830 | New |
| Traynor Capital Management, Inc. | 16,209 | $522.1K | 0.03% | +52+0.3% | Added |
| Canada Pension Plan Investment Board | 15,200 | $514.5K | 0.00% | −6,600−30.3% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 15,122 | $511.9K | 0.00% | +941+6.6% | Added |
| Voya Investment Management LLC | 14,242 | $482.1K | 0.00% | −121−0.8% | Reduced |
| Aviva PLC | 14,134 | $478.4K | 0.00% | +14,134 | New |
| Diversified Trust Co | 13,936 | $471.7K | 0.01% | +1,625+13.2% | Added |
| Cinctive Capital Management LP | 13,833 | $468.2K | 0.03% | +13,833 | New |
| Quantinno Capital Management LP | 13,002 | $440.1K | 0.00% | +60+0.5% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 12,899 | $436.6K | 0.00% | −378−2.8% | Reduced |
| Integrated Quantitative Investments LLC | 12,868 | $435.6K | 0.08% | +12,868 | New |
| Police & Firemen's Retirement System of New Jersey | 12,674 | $429.0K | 0.00% | +1,232+10.8% | Added |
| Arizona State Retirement System | 12,411 | $420.1K | 0.00% | −113−0.9% | Reduced |
| Group One Trading, L.P. | 12,278 | $415.6K | 0.01% | +9,237+303.7% | Added |
| Holocene Advisors, LP | 12,128 | $410.5K | 0.00% | +12,128 | New |
| Winton Group Ltd | 11,266 | $381.4K | 0.01% | +1,881+20.0% | Added |
| City Center Advisors, LLC | 11,118 | $376.3K | 0.35% | +3,601+47.9% | Added |
| ProShare Advisors LLC | 10,955 | $370.8K | 0.00% | −699−6.0% | Reduced |
| Commonwealth Equity Services, LLC | 10,793 | $365.3K | 0.00% | +696+6.9% | Added |
| Credit Agricole S A | 10,745 | $363.7K | 0.00% | −10,300−48.9% | Reduced |
| ROI Financial Advisors, LLC | 10,731 | $363.2K | 0.22% | +598+5.9% | Added |
| Advisor Group Holdings, Inc. | 10,591 | $358.5K | 0.00% | −615−5.5% | Reduced |
| Vanguard Investments Australia, Ltd. | 10,492 | $355.2K | 0.00% | +10,492 | New |
| Principal Securities, Inc. | 10,368 | $351.0K | 0.01% | +1,732+20.1% | Added |
| Summit Financial, LLC | 10,277 | $347.9K | 0.00% | +10,277 | New |
| State of Alaska, Department of Revenue | 10,146 | $343.0K | 0.00% | +4,000+65.1% | Added |
| KLP Kapitalforvaltning AS | 10,100 | $341.9K | 0.00% | +700+7.4% | Added |
| Victory Capital Management Inc | 10,088 | $341.5K | 0.00% | −66,794−86.9% | Reduced |
| Cetera Investment Advisers | 10,023 | $339.3K | 0.00% | −1,402−12.3% | Reduced |
| PDT Partners, LLC | 9,732 | $329.4K | 0.02% | 00.0% | Unchanged |
| Creative Planning | 9,219 | $312.1K | 0.00% | +9,219 | New |
| Central Pacific Bank - Trust Division | 9,175 | $310.6K | 0.04% | +9,175 | New |
| CWM, LLC | 8,823 | $298.7K | 0.00% | +1,071+13.8% | Added |
| US Bancorp | 8,821 | $298.6K | 0.00% | +61+0.7% | Added |
| Mangrove Partners | 8,719 | $295.1K | 0.02% | +8,719 | New |
| Handelsbanken Fonder AB | 8,600 | $291.0K | 0.00% | 00.0% | Unchanged |
| Morgan Dempsey Capital Management LLC | 8,510 | $288.0K | 0.13% | +8,510 | New |
| Cornerstone Investment Partners, LLC | 8,002 | $270.9K | 0.01% | +8,002 | New |
| Fund Advisors of America Inc | 7,999 | $270.8K | 0.27% | −3,054−27.6% | Reduced |
| Headlands Technologies LLC | 7,792 | $263.8K | 0.03% | −26,516−77.3% | Reduced |
| Pictet Asset Management Holding SA | 7,413 | $250.9K | 0.00% | +7,413 | New |
| Prudential Financial Inc | 7,280 | $246.4K | 0.00% | +7,280 | New |
| Thrivent Financial for Lutherans | 7,242 | $245.0K | 0.00% | +7,242 | New |
| Axq Capital, LP | 7,231 | $244.8K | 0.03% | −11,700−61.8% | Reduced |
| Jones Financial Companies LLLP | 7,159 | $241.4K | 0.00% | −692−8.8% | Reduced |
| Kingsview Wealth Management, LLC | 6,995 | $236.8K | 0.00% | 00.0% | Unchanged |
| Great Valley Advisor Group, Inc. | 6,891 | $233.3K | 0.00% | +6,891 | New |
| D.A. Davidson & Co. | 6,794 | $230.0K | 0.00% | −214−3.1% | Reduced |
| Wellington Shields Capital Management, LLC | 6,565 | $222.2K | 0.03% | +6,565 | New |
| Cerity Partners LLC | 6,391 | $216.3K | 0.00% | +6,391 | New |
| Brinker Capital Investments, LLC | 6,331 | $214.3K | 0.00% | +6,331 | New |
| EntryPoint Capital, LLC | 6,312 | $213.7K | 0.06% | +6,312 | New |
| Walleye Capital LLC | 6,285 | $212.7K | 0.00% | −58,235−90.3% | Reduced |
| Savant Capital, LLC | 6,069 | $205.4K | 0.00% | +6,069 | New |
| Wealth Enhancement Advisory Services, LLC | 6,401 | $205.4K | 0.00% | +6,401 | New |
| Acorn Financial Advisory Services Inc | 6,004 | $203.2K | 0.03% | +6,004 | New |
| Walleye Trading LLC | 5,065 | $171.4K | 0.00% | +5,065 | New |
| Citigroup Inc | 4,889 | $165.5K | 0.00% | +3,294+206.5% | Added |
| Tower Research Capital LLC (TRC) | 4,675 | $158.2K | 0.00% | +1,784+61.7% | Added |
| State of Wyoming | 4,624 | $156.5K | 0.02% | +1,603+53.1% | Added |
| Ensign Peak Advisors, Inc | 4,550 | $154.0K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 3,652 | $123.6K | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 2,731 | $92.4K | 0.00% | +38+1.4% | Added |
| Federation des caisses Desjardins du Quebec | 2,625 | $88.9K | 0.00% | 00.0% | Unchanged |
| Optiver Holding B.V. | 1,882 | $63.7K | 0.00% | +1,882 | New |
| Kemnay Advisory Services Inc. | 1,867 | $63.2K | 0.01% | +1,867 | New |
| KBC Group NV | 1,613 | $55.0K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 1,573 | $53.2K | 0.00% | +10+0.6% | Added |
| Essential Partners LLC | 1,165 | $39.4K | 0.01% | +13+1.1% | Added |
| GAMMA Investing LLC | 1,128 | $38.2K | 0.00% | +47+4.3% | Added |
| Lodestone Wealth Management LLC | 1,054 | $35.7K | 0.01% | 00.0% | Unchanged |
| Allworth Financial LP | 1,044 | $35.3K | 0.00% | +328+45.8% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 887 | $30.0K | 0.00% | +187+26.7% | Added |
| Acadian Asset Management LLC | 811 | $27.0K | 0.00% | −13,250−94.2% | Reduced |
| Versant Capital Management, Inc | 665 | $22.5K | 0.00% | −81−10.9% | Reduced |
| GWM Advisors LLC | 633 | $21.4K | 0.00% | −138−17.9% | Reduced |
| Nisa Investment Advisors, LLC | 545 | $18.4K | 0.00% | +16+3.0% | Added |
| SWAN Capital LLC | 500 | $16.9K | 0.01% | +100+25.0% | Added |