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
- +2.30M (+7.0%) vs. Q1 2026
- Total value
- $1.47B
- +$349.0M (+31.1%) vs. Q1 2026
- New holders
- 66
- 108 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 | $953.6M |
| 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, 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 |
|---|---|---|---|---|---|
| Hennion & Walsh Asset Management, Inc. | 46,020 | $1.91M | 0.05% | +12,665+38.0% | Added |
| California State Teachers Retirement System | 50,888 | $2.11M | 0.00% | −6,128−10.7% | Reduced |
| Deutsche Bank AG | 51,992 | $2.16M | 0.00% | +9,074+21.1% | Added |
| Marshall Wace, LLP | 53,261 | $2.21M | 0.00% | +53,261 | New |
| LPL Financial LLC | 57,385 | $2.38M | 0.00% | −29,938−34.3% | Reduced |
| Amundi | 63,251 | $2.63M | 0.00% | +5,082+8.7% | Added |
| Rhumbline Advisers | 63,572 | $2.64M | 0.00% | +3,889+6.5% | Added |
| Campbell Newman Asset Management Inc | 67,337 | $2.80M | 0.21% | +3,000+4.7% | Added |
| Brown Capital Management LLC | 68,156 | $2.83M | 0.57% | +68,156 | New |
| Balyasny Asset Management LLC | 68,847 | $2.86M | 0.01% | −75,297−52.2% | Reduced |
| New York State Common Retirement Fund | 72,900 | $3.03M | 0.00% | +2,500+3.6% | Added |
| Lumbard & Kellner, LLC | 74,139 | $3.08M | 0.93% | +470+0.6% | Added |
| Rice Hall James & Associates, LLC | 78,620 | $3.26M | 0.16% | +31,506+66.9% | Added |
| Wells Fargo & Company | 83,306 | $3.46M | 0.00% | +25,148+43.2% | Added |
| SEI Investments Co | 85,215 | $3.54M | 0.00% | −139,221−62.0% | Reduced |
| Wellington Management Group LLP | 85,244 | $3.54M | 0.00% | +85,244 | New |
| Alps Advisors Inc | 86,387 | $3.59M | 0.02% | −174−0.2% | Reduced |
| Swiss National Bank | 88,600 | $3.68M | 0.00% | −500−0.6% | Reduced |
| Two Sigma Investments, LP | 90,340 | $3.75M | 0.00% | −78,676−46.5% | Reduced |
| UBS Asset Management Americas Inc | 91,267 | $3.79M | 0.00% | +2,881+3.3% | Added |
| Defiance ETFs, LLC | 99,395 | $3.97M | 0.06% | +57,168+135.4% | Added |
| Holocene Advisors, LP | 95,716 | $3.97M | 0.01% | +83,588+689.2% | Added |
| Silvercrest Asset Management Group LLC | 100,026 | $4.15M | 0.03% | +100,026 | New |
| Millennium Management LLC | 100,762 | $4.18M | 0.00% | −814−0.8% | Reduced |
| Toroso Investments, LLC | 101,341 | $4.21M | 0.01% | +57,972+133.7% | Added |
| Bank of America Corp | 106,216 | $4.41M | 0.00% | −103,235−49.3% | Reduced |
| GMT Capital Corp | 108,066 | $4.49M | 0.23% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 111,856 | $4.64M | 0.00% | +49,520+79.4% | Added |
| Raymond James Financial Inc | 118,801 | $4.93M | 0.00% | −5,153−4.2% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 121,128 | $5.03M | 0.01% | +72,577+149.5% | Added |
| Allspring Global Investments Holdings, LLC | 130,622 | $5.21M | 0.01% | −18,979−12.7% | Reduced |
| Bank of New York Mellon Corp | 143,968 | $5.98M | 0.00% | +9,178+6.8% | Added |
| JPMorgan Chase & Co | 149,502 | $6.04M | 0.00% | +12,657+9.2% | Added |
| Palisades Investment Partners, LLC | 156,720 | $6.51M | 1.85% | +4,144+2.7% | Added |
| Baird Financial Group, Inc. | 157,203 | $6.53M | 0.01% | −6,055−3.7% | Reduced |
| ArrowMark Colorado Holdings LLC | 159,432 | $6.62M | 0.28% | +24,000+17.7% | Added |
| Mackenzie Financial Corp | 164,450 | $6.83M | 0.01% | +86,908+112.1% | Added |
| Jane Street Group, LLC | 170,319 | $7.07M | 0.00% | +170,319 | New |
| Russell Investments Group, Ltd. | 171,764 | $7.13M | 0.01% | +134,400+359.7% | Added |
| Invesco Ltd. | 180,660 | $7.50M | 0.00% | −60,132−25.0% | Reduced |
| AQR Capital Management LLC | 194,477 | $8.07M | 0.00% | +9,722+5.3% | Added |
| Essex Investment Management Co LLC | 221,933 | $9.21M | 1.21% | −5,625−2.5% | Reduced |
| Arrowstreet Capital, Limited Partnership | 230,903 | $9.58M | 0.00% | −215,849−48.3% | Reduced |
| Susquehanna International Group, LLP | 235,235 | $9.76M | 0.01% | +173,421+280.6% | Added |
| Qube Research & Technologies Ltd | 250,573 | $10.4M | 0.01% | −78,840−23.9% | Reduced |
| HRT Financial LP | 298,420 | $12.4M | 0.02% | +298,420 | New |
| T. Rowe Price Investment Management, Inc. | 306,182 | $12.7M | 0.01% | +306,182 | New |
| Vanguard Fiduciary Trust Co | 337,929 | $14.0M | 0.00% | +11,887+3.6% | Added |
| Price T Rowe Associates Inc | 343,867 | $14.3M | 0.00% | +285,255+486.7% | Added |
| Algert Global LLC | 353,832 | $14.7M | 0.17% | −136,139−27.8% | Reduced |
| BNP Paribas Arbitrage, SA | 366,437 | $15.2M | 0.01% | −70,250−16.1% | Reduced |
| D. E. Shaw & Co., Inc. | 366,845 | $15.2M | 0.01% | −200,729−35.4% | Reduced |
| Panagora Asset Management Inc | 375,515 | $15.6M | 0.05% | +119,123+46.5% | Added |
| Charles Schwab Investment Management Inc | 399,125 | $16.6M | 0.00% | +13,711+3.6% | Added |
| Stephens Investment Management Group LLC | 402,762 | $16.7M | 0.18% | +94,247+30.5% | Added |
| Ranger Investment Management, L.P. | 405,266 | $16.8M | 1.06% | +405,266 | New |
| Northern Trust Corp | 433,792 | $18.0M | 0.00% | +40,568+10.3% | Added |
| Emerald Mutual Fund Advisers Trust | 538,955 | $22.4M | 0.79% | +100,080+22.8% | Added |
| Royce & Associates LP | 555,821 | $23.1M | 0.19% | +13,043+2.4% | Added |
| Telemark Asset Management, LLC | 600,000 | $24.9M | 1.80% | 00.0% | Unchanged |
| Nuveen, LLC | 628,406 | $26.1M | 0.01% | −392,541−38.4% | Reduced |
| Morgan Stanley | 635,833 | $26.4M | 0.00% | +1,992+0.3% | Added |
| Dimensional Fund Advisors LP | 645,991 | $26.8M | 0.00% | −12,306−1.9% | Reduced |
| Legal & General Group Plc | 756,863 | $31.4M | 0.01% | +226,732+42.8% | Added |
| Emerald Advisers, LLC | 843,956 | $35.0M | 0.82% | +86,552+11.4% | Added |
| Baillie Gifford & Co | 933,308 | $38.7M | 0.04% | −514,111−35.5% | Reduced |
| AWM Investment Company, Inc. | 951,604 | $39.5M | 3.43% | +150,000+18.7% | Added |
| Oberweis Asset Management Inc | 987,500 | $41.0M | 0.85% | +137,600+16.2% | Added |
| First Trust Advisors LP | 1,168,424 | $48.5M | 0.03% | +390,156+50.1% | Added |
| Geode Capital Management, LLC | 1,243,198 | $51.6M | 0.00% | +74,046+6.3% | Added |
| Goldman Sachs Group Inc | 1,294,047 | $53.7M | 0.01% | +584,543+82.4% | Added |
| State Street Corp | 1,358,225 | $56.4M | 0.00% | +97,154+7.7% | Added |
| Vanguard Portfolio Management LLC | 1,418,863 | $58.9M | 0.00% | −292,814−17.1% | Reduced |
| UBS Group AG | 1,429,090 | $59.3M | 0.01% | +829,269+138.3% | Added |
| Barrow Hanley Mewhinney & Strauss LLC | 1,704,006 | $70.7M | 0.21% | +564,213+49.5% | Added |
| Vanguard Capital Management LLC | 2,034,219 | $84.4M | 0.00% | −5,249−0.3% | Reduced |
| BlackRock, Inc. | 4,095,371 | $170.0M | 0.00% | +112,721+2.8% | Added |
| Hood River Capital Management LLC | 0 | $0 | 0.00% | −398,711−100.0% | Sold out |
| Nomura Asset Management International Inc. | 0 | $0 | 0.00% | −379,483−100.0% | Sold out |
| Axiom Investors LLC | 0 | $0 | 0.00% | −100,814−100.0% | Sold out |
| Maxi Investments CY Ltd | 0 | $0 | 0.00% | −75,754−100.0% | Sold out |
| Kennedy Capital Management, Inc. | 0 | $0 | 0.00% | −66,167−100.0% | Sold out |
| Boston Partners | 0 | $0 | 0.00% | −66,071−100.0% | Sold out |
| Janney Montgomery Scott LLC | 0 | $0 | 0.00% | −56,946−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −56,452−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −35,385−100.0% | Sold out |
| Virginia Retirement Systems Et Al | 0 | $0 | 0.00% | −18,800−100.0% | Sold out |
| GoalVest Advisory LLC | 0 | $0 | 0.00% | −17,400−100.0% | Sold out |
| Canada Pension Plan Investment Board | 0 | $0 | 0.00% | −15,200−100.0% | Sold out |
| Cinctive Capital Management LP | 0 | $0 | 0.00% | −13,833−100.0% | Sold out |
| Integrated Quantitative Investments LLC | 0 | $0 | 0.00% | −12,868−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −11,266−100.0% | Sold out |
| City Center Advisors, LLC | 0 | $0 | 0.00% | −11,118−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −9,732−100.0% | Sold out |
| Mangrove Partners | 0 | $0 | 0.00% | −8,719−100.0% | Sold out |
| Handelsbanken Fonder AB | 0 | $0 | 0.00% | −8,600−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −7,792−100.0% | Sold out |
| Thrivent Financial for Lutherans | 0 | $0 | 0.00% | −7,242−100.0% | Sold out |
| Cerity Partners LLC | 0 | $0 | 0.00% | −6,391−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −6,285−100.0% | Sold out |