American SuperconductorAMSC
13F holders, Q2 2026 (June 30)277holders +32
62new positions
30sold out
4famous investors
$41.48avg. 13F price*
At the end of Q2 2026, 277 institutions reported holding American Superconductor Corp. (AMSC) in their 13F filings, up 32 from Q1 2026. 62 opened new positions and 30 sold out. The largest holders were BlackRock, Inc. ($170.0M), Vanguard Capital Management LLC ($84.4M) and Barrow Hanley Mewhinney & Strauss LLC ($70.7M). 4 famous investors held it, including David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- American Superconductor Corp.
- CUSIP
- 030111207
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 62 | $78.5M |
| Exits | 30 | $47.1M |
All 13F filers, Q1 2026 → Q2 2026: 6,864,754 shares bought and 4,651,465 shares sold, net +2,213,289 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 277 holders
| BlackRock, Inc. | 0.00% | Add +2.8% | 4,095,371 | $170.0M |
| Vanguard Capital Management LLC | 0.00% | Reduce -0.3% | 2,034,219 | $84.4M |
| Barrow Hanley Mewhinney & Strauss LLC | 0.21% | Add +49.5% | 1,704,006 | $70.7M |
| UBS Group AG | 0.01% | Add +138.3% | 1,429,090 | $59.3M |
| Vanguard Portfolio Management LLC | 0.00% | Reduce -17.1% | 1,418,863 | $58.9M |
| State Street Corp. | 0.00% | Add +7.7% | 1,358,225 | $56.4M |
| Goldman Sachs Group Inc. | 0.01% | Add +82.4% | 1,294,047 | $53.7M |
| Geode Capital Management, LLC | 0.00% | Add +6.3% | 1,243,198 | $51.6M |
| First Trust Advisors LP | 0.03% | Add +50.1% | 1,168,424 | $48.5M |
| Oberweis Asset Management Inc./ | 0.85% | Add +16.2% | 987,500 | $41.0M |
| AWM Investment Company, Inc. | 3.43% | Add +18.7% | 951,604 | $39.5M |
| Baillie Gifford & Co. | 0.04% | Reduce -35.5% | 933,308 | $38.7M |
| Emerald Advisers, LLC | 0.82% | Add +11.4% | 843,956 | $35.0M |
| Legal & General Group Plc | 0.01% | Add +42.8% | 756,863 | $31.4M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -1.9% | 645,991 | $26.8M |
| Morgan Stanley | 0.00% | Add +0.3% | 635,833 | $26.4M |
| Nuveen, LLC | 0.01% | Reduce -38.5% | 628,406 | $26.1M |
| Telemark Asset Management, LLC | 1.80% | No change | 600,000 | $24.9M |
| Royce & Associates LP | 0.19% | Add +2.4% | 555,821 | $23.1M |
| Emerald Mutual Fund Advisers Trust | 0.79% | Add +22.8% | 538,955 | $22.4M |
| Northern Trust Corp. | 0.00% | Add +10.3% | 433,792 | $18.0M |
| Ranger Investment Management, L.P. | 1.06% | New | 405,266 | $16.8M |
| Stephens Investment Management Group LLC | 0.18% | Add +30.6% | 402,762 | $16.7M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +3.6% | 399,125 | $16.6M |
| Panagora Asset Management Inc. | 0.05% | Add +46.5% | 375,515 | $15.6M |
| D. E. Shaw & Co. | 0.01% | Reduce -35.4% | 366,845 | $15.2M |
| BNP Paribas Financial Markets | 0.01% | Reduce -16.1% | 366,437 | $15.2M |
| Algert Global LLC | 0.17% | Reduce -27.8% | 353,832 | $14.7M |
| T. Rowe Price Associates Inc. | 0.00% | Add +486.7% | 343,867 | $14.3M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +3.6% | 337,929 | $14.0M |
| T. Rowe Price Investment Management, Inc. | 0.01% | New | 306,182 | $12.7M |
| HRT Financial LP | 0.02% | New | 298,420 | $12.4M |
| Qube Research & Technologies Ltd | 0.01% | Reduce -23.9% | 250,573 | $10.4M |
| Susquehanna International Group, LLP | 0.01% | Add +280.6% | 235,235 | $9.8M |
| Arrowstreet Capital, Limited Partnership | 0.00% | Reduce -48.3% | 230,903 | $9.6M |
| Essex Investment Management Co. LLC | 1.21% | Reduce -2.5% | 221,933 | $9.2M |
| AQR Capital Management | 0.00% | Add +5.3% | 194,477 | $8.1M |
| Invesco Ltd. | 0.00% | Reduce -25.0% | 180,660 | $7.5M |
| Russell Investments Group, Ltd. | 0.01% | Add +359.7% | 171,764 | $7.1M |
| Jane Street Group, LLC | 0.00% | New | 170,319 | $7.1M |
| Mackenzie Financial Corp. | 0.01% | Add +112.1% | 164,450 | $6.8M |
| ArrowMark Colorado Holdings LLC | 0.28% | Add +17.7% | 159,432 | $6.6M |
| Baird Financial Group, Inc. | 0.01% | Reduce -3.7% | 157,203 | $6.5M |
| Palisades Investment Partners, LLC | 1.85% | Add +2.7% | 156,720 | $6.5M |
| JPMorgan Chase & Co. | 0.00% | Add +9.3% | 149,502 | $6.0M |
| Bank of New York Mellon Corp | 0.00% | Add +6.8% | 143,968 | $6.0M |
| Allspring Global Investments Holdings, LLC | 0.01% | Reduce -12.7% | 130,622 | $5.2M |
| Raymond James Financial Inc. | 0.00% | Reduce -4.2% | 118,801 | $4.9M |
| Ameriprise Financial Inc. | 0.00% | Add +79.4% | 111,856 | $4.6M |
| GMT Capital Corp | 0.23% | No change | 108,066 | $4.5M |
| Bank of America Corp. | 0.00% | Reduce -49.3% | 106,216 | $4.4M |
| Tidal Investments LLC | 0.01% | Add +133.7% | 101,341 | $4.2M |
| Millennium Management | 0.00% | Reduce -0.8% | 100,762 | $4.2M |
| Silvercrest Asset Management Group LLC | 0.03% | New | 100,026 | $4.2M |
| Holocene Advisors, LP | 0.01% | Add +689.2% | 95,716 | $4.0M |
| Defiance ETFs, LLC | 0.06% | Add +135.4% | 99,395 | $4.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +3.3% | 91,267 | $3.8M |
| Two Sigma Investments, LP | 0.00% | Reduce -46.5% | 90,340 | $3.8M |
| Swiss National Bank | 0.00% | Reduce -0.6% | 88,600 | $3.7M |
| Alps Advisors Inc. | 0.02% | Reduce -0.2% | 86,387 | $3.6M |
| Wellington Management Group LLP | 0.00% | New | 85,244 | $3.5M |
| Sei Investments Co. | 0.00% | Reduce -62.0% | 85,215 | $3.5M |
| Wells Fargo & Company | 0.00% | Add +43.2% | 83,306 | $3.5M |
| Rice Hall James & Associates, LLC | 0.16% | Add +66.9% | 78,620 | $3.3M |
| Lumbard & Kellner, LLC | 0.93% | Add +0.6% | 74,139 | $3.1M |
| New York State Common Retirement Fund | 0.00% | Add +3.5% | 72,900 | $3.0M |
| Balyasny Asset Management L.P. | 0.01% | Reduce -52.2% | 68,847 | $2.9M |
| Brown Capital Management LLC | 0.57% | New | 68,156 | $2.8M |
| Campbell Newman Asset Management Inc. | 0.21% | Add +4.7% | 67,337 | $2.8M |
| Rhumbline Advisers | 0.00% | Add +6.5% | 63,572 | $2.6M |
| Amundi | 0.00% | Add +8.7% | 63,251 | $2.6M |
| Cambridge Investment Research Advisors, Inc. | 0.01% | Add +24.7% | 60,564 | $2.5M |
| LPL Financial LLC | 0.00% | Reduce -34.3% | 57,385 | $2.4M |
| Marshall Wace, LLP | 0.00% | New | 53,261 | $2.2M |
| Deutsche Bank AG | 0.00% | Add +21.1% | 51,992 | $2.2M |
| California State Teachers Retirement System | 0.00% | Reduce -10.8% | 50,888 | $2.1M |
| Hennion & Walsh Asset Management, Inc. | 0.05% | Add +38.0% | 46,020 | $1.9M |
| Alliancebernstein L.P. | 0.00% | Add +23.2% | 54,720 | $1.9M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +10.1% | 42,728 | $1.8M |
| Legato Capital Management LLC | 0.14% | Add +3.1% | 41,369 | $1.7M |
| Covestor Ltd | 0.99% | Add +1033600.0% | 41,348 | $1.7M |
| Nissay Asset Management Corp. /Japan | 0.01% | Add +49.3% | 37,914 | $1.6M |
| Quadrature Capital Ltd | 0.01% | Reduce -3.7% | 37,682 | $1.6M |
| Royal Bank of Canada | 0.00% | Add +13.8% | 35,656 | $1.5M |
| Merit Financial Group, LLC | 0.01% | Reduce -3.9% | 35,471 | $1.5M |
| Polymer Capital Management (US) LLC | 0.21% | New | 34,521 | $1.4M |
| Quantum Private Wealth, LLC | 0.36% | Add +8.3% | 33,823 | $1.4M |
| Focus Partners Wealth | 0.00% | Add +1.2% | 33,671 | $1.4M |
| Franklin Resources Inc. | 0.00% | Add +13.2% | 33,360 | $1.4M |
| Truist Financial Corp. | 0.00% | No change | 32,700 | $1.4M |
| Citigroup Inc. | 0.00% | Add +566.8% | 32,598 | $1.4M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | Add +11.3% | 32,589 | $1.4M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | Add +149.2% | 32,145 | $1.3M |
| Aquatic Capital Management LLC | 0.05% | New | 32,081 | $1.3M |
| Kornitzer Capital Management Inc. | 0.03% | Reduce -9.4% | 31,669 | $1.3M |
| XTX Topco Ltd | 0.02% | New | 30,848 | $1.3M |
| Oppenheimer & Co. Inc. | 0.01% | Add +18.9% | 30,060 | $1.2M |
| Portolan Capital Management, LLC | 0.05% | Reduce -90.1% | 29,314 | $1.2M |
| Virtus Advisers, LLC | 0.46% | Add +3.8% | 28,501 | $1.2M |
| HighTower Advisors, LLC | 0.00% | Reduce -34.1% | 28,498 | $1.2M |
"% of holder's portfolio" is AMSC's weight in each manager's 13F, not the share of American Superconductor Corp. the manager owns.