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 2024
Institutional positions in American Superconductor Corp as of Mar 31, 2024. 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
- 128
- +29 vs. Q4 2023
- Shares held
- 23.1M
- +7.05M (+43.9%) vs. Q4 2023
- Total value
- $312.0M
- +$133.3M (+74.5%) vs. Q4 2023
- New holders
- 43
- 40 more added
- Sold out
- 14
- 23 more reduced
Compare with Q4 2023: 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 2024
Shares, value and share of portfolio for each institution holding American Superconductor Corp; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| G2 Investment Partners Management LLC | 154,139 | $2.08M | 0.56% | +154,139 | New |
| Cubist Systematic Strategies, LLC | 236,106 | $3.19M | 0.04% | +164,989+232.0% | Added |
| Goldman Sachs Group Inc | 249,569 | $3.37M | 0.00% | +199,591+399.4% | Added |
| CM Management, LLC | 250,000 | $3.38M | 2.84% | +55,000+28.2% | Added |
| First Trust Advisors LP | 251,163 | $3.39M | 0.00% | +13,928+5.9% | Added |
| D. E. Shaw & Co., Inc. | 288,195 | $3.89M | 0.00% | −147,549−33.9% | Reduced |
| Laurion Capital Management LP | 300,323 | $4.06M | 0.11% | 00.0% | Unchanged |
| ArrowMark Colorado Holdings LLC | 306,432 | $4.14M | 0.05% | −125,000−29.0% | Reduced |
| Qube Research & Technologies Ltd | 320,220 | $4.33M | 0.01% | +88,586+38.2% | Added |
| Citadel Advisors LLC | 332,397 | $4.49M | 0.00% | +70,167+26.8% | Added |
| State Street Corp | 334,115 | $4.51M | 0.00% | −5,242−1.5% | Reduced |
| Jane Street Group, LLC | 356,473 | $4.82M | 0.01% | +142,974+67.0% | Added |
| Geode Capital Management, LLC | 384,741 | $5.20M | 0.00% | +89,780+30.4% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 395,791 | $5.35M | 0.02% | +273,957+224.9% | Added |
| Telemark Asset Management, LLC | 400,000 | $5.40M | 0.56% | +400,000 | New |
| Millennium Management LLC | 499,667 | $6.75M | 0.01% | +86,900+21.1% | Added |
| Morgan Stanley | 516,416 | $6.98M | 0.00% | +355,031+220.0% | Added |
| Dimensional Fund Advisors LP | 580,547 | $7.84M | 0.00% | −103,151−15.1% | Reduced |
| Essex Investment Management Co LLC | 583,924 | $7.89M | 1.56% | −40,094−6.4% | Reduced |
| Oberweis Asset Management Inc | 634,400 | $8.57M | 0.62% | +258,600+68.8% | Added |
| BlackRock Inc. | 746,266 | $10.1M | 0.00% | +132,966+21.7% | Added |
| Invesco Ltd. | 864,227 | $11.7M | 0.00% | −687−0.1% | Reduced |
| Driehaus Capital Management LLC | 931,979 | $12.6M | 0.13% | +931,979 | New |
| Royce & Associates LP | 1,193,182 | $16.1M | 0.14% | −52,678−4.2% | Reduced |
| Hood River Capital Management LLC | 1,618,807 | $21.9M | 0.49% | +1,618,807 | New |
| Vanguard Group Inc | 1,698,934 | $23.0M | 0.00% | +396,814+30.5% | Added |
| Baillie Gifford & Co | 2,526,550 | $34.1M | 0.03% | +440,271+21.1% | Added |
| AWM Investment Company, Inc. | 2,661,319 | $36.0M | 4.71% | +433,018+19.4% | Added |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −105,909−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −57,784−100.0% | Sold out |
| Cetera Advisors LLC | 0 | $0 | 0.00% | −41,021−100.0% | Sold out |
| 683 Capital Management, LLC | 0 | $0 | 0.00% | −23,650−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −17,289−100.0% | Sold out |
| Raymond James Financial Services Advisors, Inc. | 0 | $0 | 0.00% | −11,845−100.0% | Sold out |
| Mirabella Financial Services LLP | 0 | $0 | 0.00% | −11,180−100.0% | Sold out |
| AJOVista, LLC | 0 | $0 | 0.00% | −6,221−100.0% | Sold out |
| Cutler Group LP | 0 | $0 | 0.00% | −3,306−100.0% | Sold out |
| Psagot Value Holdings Ltd. / (Israel) | 0 | $0 | 0.00% | −2,917−100.0% | Sold out |
| M&R Capital Management Inc | 0 | $0 | 0.00% | −2,000−100.0% | Sold out |
| US Bancorp | 0 | $0 | 0.00% | −128−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −10−100.0% | Sold out |
| Creative Planning | 0 | $0 | 0.00% | −550−100.0% | Sold out |