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, Q2 2026
Institutional positions in American Superconductor Corp as of Jun 30, 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
- 277
- +36 vs. Q1 2026
- Shares held
- 35.4M
- +2.24M (+6.8%) vs. Q1 2026
- Total value
- $1.47B
- +$346.2M (+30.9%) vs. Q1 2026
- New holders
- 66
- 107 more added
- Sold out
- 30
- 77 more reduced
4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding American Superconductor Corp; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| MetLife Investment Management | 27,526 | $1.14M | 0.01% | +1,835+7.1% | Added |
| Round Rock Advisors, LLC | 26,431 | $1.10M | 0.14% | +6,091+29.9% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 24,343 | $1.01M | 0.00% | +2,095+9.4% | Added |
| KBC Group NV | 24,078 | $999.0K | 0.00% | +22,465+1,392.7% | Added |
| Diversified Trust Co | 23,878 | $991.2K | 0.02% | +9,942+71.3% | Added |
| State of New Jersey Common Pension Fund D | 21,666 | $899.4K | 0.00% | +21,666 | New |
| Dorsey & Whitney Trust CO LLC | 21,611 | $897.1K | 0.04% | 00.0% | Unchanged |
| Citadel Advisors LLC | 20,528 | $852.1K | 0.00% | −196,185−90.5% | Reduced |
| Manufacturers Life Insurance Company, The | 20,426 | $847.9K | 0.00% | −402−1.9% | Reduced |
| Jupiter Topco LLC | 20,134 | $836.0K | 0.00% | +20,134 | New |
| Ardsley Advisory Partners LP | 20,000 | $830.2K | 0.09% | −5,000−20.0% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 19,427 | $806.4K | 0.00% | +4,305+28.5% | Added |
| Mariner, LLC | 18,751 | $778.5K | 0.00% | −6,399−25.4% | Reduced |
| Vanguard Global Advisers, LLC | 18,455 | $766.1K | 0.00% | −1,039−5.3% | Reduced |
| Intech Investment Management LLC | 18,079 | $750.5K | 0.01% | 00.0% | Unchanged |
| Quantinno Capital Management LP | 17,067 | $708.5K | 0.00% | +4,065+31.3% | Added |
| TFC Financial Management | 16,787 | $696.8K | 0.08% | +46+0.3% | Added |
| Truvestments Capital LLC | 16,567 | $687.7K | 0.10% | −305−1.8% | Reduced |
| Simplex Trading, LLC | 16,533 | $686.3K | 0.02% | +16,533 | New |
| Traynor Capital Management, Inc. | 16,489 | $684.5K | 0.03% | +280+1.7% | Added |
| Central Pacific Bank - Trust Division | 16,266 | $675.2K | 0.07% | +7,091+77.3% | Added |
| Verity Asset Management, Inc. | 16,246 | $674.4K | 0.26% | −6,034−27.1% | Reduced |
| Schnieders Capital Management, LLC. | 16,054 | $666.4K | 0.09% | +16,054 | New |
| Voya Investment Management LLC | 15,902 | $660.1K | 0.00% | +1,660+11.7% | Added |
| Advisory Services Network, LLC | 15,793 | $655.6K | 0.01% | −884−5.3% | Reduced |
| Virtu Financial LLC | 15,658 | $650.0K | 0.02% | +15,658 | New |
| Andrew Hill Investment Advisors, Inc. | 15,496 | $643.3K | 0.48% | +15,496 | New |
| Commonwealth Equity Services, LLC | 15,044 | $624.5K | 0.00% | +4,251+39.4% | Added |
| Globeflex Capital L P | 14,510 | $602.3K | 0.08% | −7,123−32.9% | Reduced |
| Inspire Advisors, LLC | 14,450 | $599.4K | 0.04% | +14,450 | New |
| Police & Firemen's Retirement System of New Jersey | 13,900 | $577.0K | 0.00% | +1,226+9.7% | Added |
| Group One Trading, L.P. | 13,622 | $565.4K | 0.02% | +1,344+10.9% | Added |
| Cim, LLC | 12,982 | $538.9K | 0.07% | +12,982 | New |
| ROI Financial Advisors, LLC | 12,842 | $533.1K | 0.28% | +2,111+19.7% | Added |
| Advisor Group Holdings, Inc. | 12,651 | $525.1K | 0.00% | +2,060+19.5% | Added |
| Creative Planning | 12,169 | $505.1K | 0.00% | +2,950+32.0% | Added |
| Arizona State Retirement System | 12,152 | $504.4K | 0.00% | −259−2.1% | Reduced |
| IMC-Chicago, LLC | 12,020 | $498.9K | 0.00% | +12,020 | New |
| nVerses Capital, LLC | 11,909 | $494.3K | 0.76% | +11,909 | New |
| Vanguard Investments Australia, Ltd. | 11,822 | $490.7K | 0.00% | +1,330+12.7% | Added |
| Summit Financial, LLC | 11,622 | $482.4K | 0.01% | +1,345+13.1% | Added |
| Dark Forest Capital Management LP | 11,422 | $474.1K | 0.03% | −8,854−43.7% | Reduced |
| Fox Run Management, L.L.C. | 11,407 | $473.5K | 0.08% | +11,407 | New |
| F/M Investments LLC | 11,400 | $473.2K | 0.02% | −5,699−33.3% | Reduced |
| Retirement Planning Group | 11,000 | $456.6K | 0.01% | +11,000 | New |
| PFG Investments, LLC | 10,755 | $446.4K | 0.02% | −5,075−32.1% | Reduced |
| Credit Agricole S A | 10,745 | $446.0K | 0.00% | 00.0% | Unchanged |
| Atom Investors LP | 10,696 | $444.0K | 0.04% | +10,696 | New |
| State Board of Administration of Florida Retirement System | 10,539 | $437.5K | 0.00% | −13,725−56.6% | Reduced |
| FMR LLC | 10,354 | $429.8K | 0.00% | −136,939−93.0% | Reduced |
| Cetera Investment Advisers | 10,239 | $425.0K | 0.00% | +216+2.2% | Added |
| State of Alaska, Department of Revenue | 10,146 | $421.0K | 0.00% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 10,100 | $419.3K | 0.00% | 00.0% | Unchanged |
| Aviva PLC | 10,066 | $417.8K | 0.00% | −4,068−28.8% | Reduced |
| Stifel Financial Corp | 9,988 | $414.6K | 0.00% | +9,988 | New |
| TD Asset Management Inc | 9,978 | $414.2K | 0.00% | +9,978 | New |
| Vident Advisory, LLC | 9,698 | $402.6K | 0.00% | +9,698 | New |
| ProShare Advisors LLC | 9,680 | $401.8K | 0.00% | −1,275−11.6% | Reduced |
| Catalyst Funds Management Pty Ltd | 9,000 | $373.6K | 0.02% | +9,000 | New |
| Principal Securities, Inc. | 8,975 | $372.6K | 0.00% | −1,393−13.4% | Reduced |
| Morgan Dempsey Capital Management LLC | 8,819 | $366.1K | 0.16% | +309+3.6% | Added |
| Walleye Trading LLC | 8,373 | $347.6K | 0.00% | +3,308+65.3% | Added |
| ExodusPoint Capital Management, LP | 8,325 | $345.6K | 0.00% | −18,165−68.6% | Reduced |
| Jones Financial Companies LLLP | 8,637 | $343.1K | 0.00% | +1,478+20.6% | Added |
| Prudential Financial Inc | 7,860 | $326.3K | 0.00% | +580+8.0% | Added |
| Fund Advisors of America Inc | 7,809 | $324.2K | 0.29% | −190−2.4% | Reduced |
| Kings Path Partners LLC | 7,625 | $316.5K | 0.08% | +7,625 | New |
| Cornerstone Investment Partners, LLC | 7,560 | $313.8K | 0.01% | −442−5.5% | Reduced |
| Barclays PLC | 7,471 | $310.1K | 0.00% | −10,043−57.3% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 8,610 | $309.6K | 0.00% | +2,209+34.5% | Added |
| Axq Capital, LP | 7,449 | $309.2K | 0.03% | +218+3.0% | Added |
| Boothbay Fund Management, LLC | 7,414 | $307.8K | 0.01% | +7,414 | New |
| Dynamic Technology Lab Private Ltd | 7,163 | $298.0K | 0.07% | +7,163 | New |
| Kingsview Wealth Management, LLC | 6,995 | $290.4K | 0.00% | 00.0% | Unchanged |
| Marex Group plc | 6,900 | $286.4K | 0.00% | +6,900 | New |
| Great Valley Advisor Group, Inc. | 6,691 | $277.8K | 0.00% | −200−2.9% | Reduced |
| Wellington Shields Capital Management, LLC | 6,565 | $272.5K | 0.03% | 00.0% | Unchanged |
| Two Sigma Securities, LLC | 6,551 | $271.9K | 0.02% | +6,551 | New |
| Pictet Asset Management Holding SA | 6,435 | $267.1K | 0.00% | −978−13.2% | Reduced |
| Yorktown Management & Research Co Inc | 6,400 | $265.7K | 0.16% | +6,400 | New |
| D.A. Davidson & Co. | 6,347 | $263.5K | 0.00% | −447−6.6% | Reduced |
| Brinker Capital Investments, LLC | 6,318 | $262.3K | 0.00% | −13−0.2% | Reduced |
| EntryPoint Capital, LLC | 6,312 | $262.0K | 0.06% | 00.0% | Unchanged |
| Assenagon Asset Management S.A. | 6,224 | $258.4K | 0.00% | −12,455−66.7% | Reduced |
| Savant Capital, LLC | 6,044 | $250.9K | 0.00% | −25−0.4% | Reduced |
| State of Wisconsin Investment Board | 5,908 | $245.2K | 0.00% | +5,908 | New |
| Mayflower Financial Advisors, LLC | 5,730 | $237.9K | 0.02% | +5,730 | New |
| Acorn Financial Advisory Services Inc | 5,623 | $233.4K | 0.03% | −381−6.3% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 5,575 | $231.4K | 0.00% | +5,575 | New |
| Mercer Global Advisors Inc | 5,550 | $230.4K | 0.00% | +5,550 | New |
| Stephens Inc | 5,450 | $226.2K | 0.00% | +5,450 | New |
| Granite Investment Partners, LLC | 5,420 | $225.0K | 0.01% | +5,420 | New |
| CI Private Wealth, LLC | 5,372 | $223.0K | 0.00% | +5,372 | New |
| Victory Capital Management Inc | 5,313 | $220.5K | 0.00% | −4,775−47.3% | Reduced |
| Promethium Advisors,llc | 5,000 | $207.6K | 0.10% | +5,000 | New |
| SEB Asset Management AB | 4,986 | $207.0K | 0.00% | +4,986 | New |
| Ameritas Investment Partners, Inc. | 4,277 | $177.5K | 0.00% | +625+17.1% | Added |
| SRS Capital Advisors, Inc. | 4,045 | $167.9K | 0.00% | +3,813+1,643.5% | Added |
| STRS Ohio | 3,700 | $153.6K | 0.00% | −14,000−79.1% | Reduced |
| State of Wyoming | 3,675 | $152.5K | 0.02% | −949−20.5% | Reduced |