AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) — Institutional Holders, Q2 2026
280 institutional investment managers reported a AMSC position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $1.5B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
AMSC in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- UBS Group AGAdded · +829,269 sh+$34.4M
- GOLDMAN SACHS GROUPAdded · +584,543 sh+$24.3M
- BARROW HANLEY MEWHINNEY & STRAUSSAdded · +564,213 sh+$23.4M
- Ranger Investment Management, L.P.New · +405,266 sh+$16.8M
- FIRST ADVISORSAdded · +390,156 sh+$16.2M
Biggest sellers
- BAILLIE GIFFORDTrimmed · -514,111 sh-$21.3M
- Hood River Capital ManagementSold out · -398,711 sh-$16.6M
- NuveenTrimmed · -392,541 sh-$16.3M
- NOMURA ASSET MANAGEMENT INTERNATIONALSold out · -379,483 sh-$15.8M
- VANGUARD PORTFOLIO MANAGEMENTTrimmed · -292,814 sh-$12.2M
AMSC 13F holders ranked 1–100 of 280
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | BlackRock#1 · 4,095,371 sh | 4,095,371 | $170.0M | <0.01% | +2.8% |
| 2 | VANGUARD CAPITAL MANAGEMENT#2 · 2,034,219 sh | 2,034,219 | $84.4M | <0.01% | -0.3% |
| 3 | BARROW HANLEY MEWHINNEY & STRAUSS#3 · 1,704,006 sh | 1,704,006 | $70.7M | 0.21% | +49.5% |
| 4 | UBS Group AG#4 · 1,429,090 sh | 1,429,090 | $59.3M | <0.01% | +138.3% |
| 5 | VANGUARD PORTFOLIO MANAGEMENT#5 · 1,418,863 sh | 1,418,863 | $58.9M | <0.01% | -17.1% |
| 6 | STATE STREET#6 · 1,358,225 sh | 1,358,225 | $56.4M | <0.01% | +7.7% |
| 7 | GOLDMAN SACHS GROUP#7 · 1,294,047 sh | 1,294,047 | $53.7M | <0.01% | +82.4% |
| 8 | GEODE CAPITAL MANAGEMENT#8 · 1,243,198 sh | 1,243,198 | $51.6M | <0.01% | +6.3% |
| 9 | FIRST ADVISORS#9 · 1,168,424 sh | 1,168,424 | $48.5M | 0.03% | +50.1% |
| 10 | OBERWEIS ASSET MANAGEMENT#10 · 987,500 sh | 987,500 | $41.0M | 0.85% | +16.2% |
| 11 | AWM Investment Company#11 · 951,604 sh | 951,604 | $39.5M | 3.43% | +18.7% |
| 12 | BAILLIE GIFFORD#12 · 933,308 sh | 933,308 | $38.7M | 0.04% | -35.5% |
| 13 | EMERALD ADVISERS#13 · 843,956 sh | 843,956 | $35.0M | 0.82% | +11.4% |
| 14 | Legal & General Group Plc#14 · 756,863 sh | 756,863 | $31.4M | <0.01% | +42.8% |
| 15 | DIMENSIONAL FUND ADVISORS#15 · 645,991 sh | 645,991 | $26.8M | <0.01% | -1.9% |
| 16 | MORGAN STANLEY#16 · 635,833 sh | 635,833 | $26.4M | <0.01% | +0.3% |
| 17 | Nuveen#17 · 628,406 sh | 628,406 | $26.1M | <0.01% | -38.4% |
| 18 | Telemark Asset Management#18 · 600,000 sh | 600,000 | $24.9M | 1.80% | 0.0% |
| 19 | ROYCE & ASSOCIATES#19 · 555,821 sh | 555,821 | $23.1M | 0.19% | +2.4% |
| 20 | EMERALD MUTUAL FUND ADVISERS#20 · 538,955 sh | 538,955 | $22.4M | 0.79% | +22.8% |
| 21 | NORTHERN#21 · 433,792 sh | 433,792 | $18.0M | <0.01% | +10.3% |
| 22 | Ranger Investment Management, L.P.#22 · 405,266 sh | 405,266 | $16.8M | 1.06% | New |
| 23 | Stephens Investment Management Group#23 · 402,762 sh | 402,762 | $16.7M | 0.18% | +30.5% |
| 24 | CHARLES SCHWAB INVESTMENT MANAGEMENT#24 · 399,125 sh | 399,125 | $16.6M | <0.01% | +3.6% |
| 25 | Beau Ventures#25 · 381,067 sh | 381,067 | $15.8M | — | +0.1% |
| 26 | PANAGORA ASSET MANAGEMENT#26 · 375,515 sh | 375,515 | $15.6M | 0.05% | +46.5% |
| 27 | D. E. Shaw#27 · 366,845 sh | 366,845 | $15.2M | <0.01% | -35.4% |
| 28 | BNP PARIBAS FINANCIAL MARKETS#28 · 366,437 sh | 366,437 | $15.2M | <0.01% | -16.1% |
| 29 | ALGERT GLOBAL#29 · 353,832 sh | 353,832 | $14.7M | 0.17% | -27.8% |
| 30 | PRICE T ROWE ASSOCIATES#30 · 343,867 sh | 343,867 | $14.3M | <0.01% | +486.7% |
| 31 | VANGUARD FIDUCIARY#31 · 337,929 sh | 337,929 | $14.0M | <0.01% | +3.6% |
| 32 | T. Rowe Price Investment Management#32 · 306,182 sh | 306,182 | $12.7M | <0.01% | New |
| 33 | HRT FINANCIAL#33 · 298,420 sh | 298,420 | $12.4M | 0.03% | New |
| 34 | Qube Research & Technologies Ltd#34 · 250,573 sh | 250,573 | $10.4M | <0.01% | -23.9% |
| 35 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#35 · 235,235 sh | 235,235 | $9.8M | <0.01% | +280.6% |
| 36 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP#36 · 230,903 sh | 230,903 | $9.6M | <0.01% | -48.3% |
| 37 | ESSEX INVESTMENT MANAGEMENT#37 · 221,933 sh | 221,933 | $9.2M | — | -2.5% |
| 38 | AQR CAPITAL MANAGEMENT#38 · 194,477 sh | 194,477 | $8.1M | <0.01% | +5.3% |
| 39 | Invesco Ltd.#39 · 180,660 sh | 180,660 | $7.5M | <0.01% | -25.0% |
| 40 | Russell Investments Group, Ltd.#40 · 171,764 sh | 171,764 | $7.1M | <0.01% | +359.7% |
| 41 | JANE STREET GROUP#41 · 170,319 sh | 170,319 | $7.1M | <0.01% | New |
| 42 | MACKENZIE FINANCIAL#42 · 164,450 sh | 164,450 | $6.8M | <0.01% | +112.1% |
| 43 | ArrowMark Colorado#43 · 159,432 sh | 159,432 | $6.6M | 0.28% | +17.7% |
| 44 | Baird Financial Group#44 · 157,203 sh | 157,203 | $6.5M | <0.01% | -3.7% |
| 45 | Palisades Investment Partners#45 · 156,720 sh | 156,720 | $6.5M | 1.85% | +2.7% |
| 46 | JPMORGAN CHASE#46 · 149,502 sh | 149,502 | $6.0M | <0.01% | +9.2% |
| 47 | Bank of New York Mellon#47 · 143,968 sh | 143,968 | $6.0M | <0.01% | +6.8% |
| 48 | Allspring Global Investments#48 · 130,622 sh | 130,622 | $5.2M | <0.01% | -12.7% |
| 49 | RAYMOND JAMES FINANCIAL#49 · 118,801 sh | 118,801 | $4.9M | <0.01% | -4.2% |
| 50 | AMERIPRISE FINANCIAL#50 · 111,856 sh | 111,856 | $4.6M | <0.01% | +79.4% |
| 51 | GMT CAPITAL#51 · 108,066 sh | 108,066 | $4.5M | 0.23% | 0.0% |
| 52 | BANK OF AMERICA#52 · 106,216 sh | 106,216 | $4.4M | <0.01% | -49.3% |
| 53 | Toroso Investments#53 · 101,341 sh | 101,341 | $4.2M | <0.01% | +133.7% |
| 54 | MILLENNIUM MANAGEMENT#54 · 100,762 sh | 100,762 | $4.2M | <0.01% | -0.8% |
| 55 | SILVERCREST ASSET MANAGEMENT GROUP#55 · 100,026 sh | 100,026 | $4.2M | 0.03% | New |
| 56 | Holocene Advisors#56 · 95,716 sh | 95,716 | $4.0M | <0.01% | +689.2% |
| 57 | Defiance ETFs#57 · 99,395 sh | 99,395 | $4.0M | 0.05% | +135.4% |
| 58 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#58 · 91,267 sh | 91,267 | $3.8M | <0.01% | +3.3% |
| 59 | TWO SIGMA INVESTMENTS#59 · 90,340 sh | 90,340 | $3.8M | <0.01% | -46.5% |
| 60 | Swiss National Bank#60 · 88,600 sh | 88,600 | $3.7M | <0.01% | -0.6% |
| 61 | ALPS ADVISORS#61 · 86,387 sh | 86,387 | $3.6M | 0.02% | -0.2% |
| 62 | WELLINGTON MANAGEMENT GROUP LLP#62 · 85,244 sh | 85,244 | $3.5M | <0.01% | New |
| 63 | SEI INVESTMENTS#63 · 85,215 sh | 85,215 | $3.5M | <0.01% | -62.0% |
| 64 | WELLS FARGO & COMPANY#64 · 83,306 sh | 83,306 | $3.5M | <0.01% | +43.2% |
| 65 | RICE HALL JAMES & ASSOCIATES#65 · 78,620 sh | 78,620 | $3.3M | 0.16% | +66.9% |
| 66 | Lumbard & Kellner#66 · 74,139 sh | 74,139 | $3.1M | 0.93% | +0.6% |
| 67 | NEW YORK STATE COMMON RETIREMENT FUND#67 · 72,900 sh | 72,900 | $3.0M | <0.01% | +3.6% |
| 68 | BALYASNY ASSET MANAGEMENT L.P.#68 · 68,847 sh | 68,847 | $2.9M | <0.01% | -52.2% |
| 69 | BROWN CAPITAL MANAGEMENT#69 · 68,156 sh | 68,156 | $2.8M | 0.57% | New |
| 70 | CAMPBELL NEWMAN ASSET MANAGEMENT#70 · 67,337 sh | 67,337 | $2.8M | — | +4.7% |
| 71 | RHUMBLINE ADVISERS#71 · 63,572 sh | 63,572 | $2.6M | <0.01% | +6.5% |
| 72 | Amundi#72 · 63,251 sh | 63,251 | $2.6M | <0.01% | +8.7% |
| 73 | Cambridge Investment Research Advisors#73 · 60,564 sh | 60,564 | $2.5M | <0.01% | +24.7% |
| 74 | LPL Financial#74 · 57,385 sh | 57,385 | $2.4M | <0.01% | -34.3% |
| 75 | MARSHALL WACE, LLP#75 · 53,261 sh | 53,261 | $2.2M | <0.01% | New |
| 76 | DEUTSCHE BANK AG\#76 · 51,992 sh | 51,992 | $2.2M | <0.01% | +21.1% |
| 77 | Hennion & Walsh Asset Management#77 · 46,020 sh | 46,020 | $1.9M | — | +38.0% |
| 78 | ALLIANCEBERNSTEIN L.P.#78 · 54,720 sh | 54,720 | $1.9M | <0.01% | +23.2% |
| 79 | MIRAE ASSET GLOBAL ETFS Ltd.#79 · 42,728 sh | 42,728 | $1.8M | <0.01% | +10.1% |
| 80 | Legato Capital Management#80 · 41,369 sh | 41,369 | $1.7M | 0.14% | +3.1% |
| 81 | Covestor Ltd#81 · 41,348 sh | 41,348 | $1.7M | 0.99% | New |
| 82 | NISSAY ASSET MANAGEMENT /JAPAN#82 · 37,914 sh | 37,914 | $1.6M | <0.01% | +49.3% |
| 83 | Quadrature Capital Ltd#83 · 37,682 sh | 37,682 | $1.6M | 0.01% | -3.7% |
| 84 | ROYAL BANK OF CANADA#84 · 35,656 sh | 35,656 | $1.5M | <0.01% | +13.8% |
| 85 | Merit Financial Group#85 · 35,471 sh | 35,471 | $1.5M | <0.01% | -3.9% |
| 86 | Polymer Capital Management (US)#86 · 34,521 sh | 34,521 | $1.4M | 0.19% | New |
| 87 | Quantum Private Wealth#87 · 33,823 sh | 33,823 | $1.4M | — | +8.3% |
| 88 | Focus Partners Wealth#88 · 33,671 sh | 33,671 | $1.4M | <0.01% | +1.2% |
| 89 | FRANKLIN RESOURCES#89 · 33,360 sh | 33,360 | $1.4M | <0.01% | +13.2% |
| 90 | TRUIST FINANCIAL#90 · 32,700 sh | 32,700 | $1.4M | <0.01% | 0.0% |
| 91 | CITIGROUP#91 · 32,598 sh | 32,598 | $1.4M | <0.01% | +566.8% |
| 92 | VANGUARD ASSET MANAGEMENT, Ltd#92 · 32,589 sh | 32,589 | $1.4M | <0.01% | +11.3% |
| 93 | Mitsubishi UFJ Asset Management , Ltd.#93 · 32,145 sh | 32,145 | $1.3M | <0.01% | +149.2% |
| 94 | Aquatic Capital Management#94 · 32,081 sh | 32,081 | $1.3M | 0.05% | New |
| 95 | KORNITZER CAPITAL MANAGEMENT#95 · 31,669 sh | 31,669 | $1.3M | 0.03% | -9.4% |
| 96 | XTX Topco Ltd#96 · 30,848 sh | 30,848 | $1.3M | 0.02% | New |
| 97 | OPPENHEIMER#97 · 30,060 sh | 30,060 | $1.2M | — | +18.9% |
| 98 | Portolan Capital Management#98 · 29,314 sh | 29,314 | $1.2M | 0.05% | -90.1% |
| 99 | VIRTUS ADVISERS#99 · 28,501 sh | 28,501 | $1.2M | 0.45% | +3.8% |
| 100 | HighTower Advisors#100 · 28,498 sh | 28,498 | $1.2M | <0.01% | -34.1% |
Funds that sold out of AMSC in Q2 2026 (30)
Held AMSC at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| Hood River Capital Management398,711 sh | 398,711 | $13.5M |
| NOMURA ASSET MANAGEMENT INTERNATIONAL379,483 sh | 379,483 | $12.8M |
| AXIOM INVESTORS100,814 sh | 100,814 | $3.4M |
| Maxi Investments CY Ltd75,754 sh | 75,754 | $2.6M |
| KENNEDY CAPITAL MANAGEMENT66,167 sh | 66,167 | $2.2M |
| Boston Partners66,071 sh | 66,071 | $2.2M |
| Janney Montgomery Scott56,946 sh | 56,946 | $1.9M |
| LAZARD ASSET MANAGEMENT56,452 sh | 56,452 | $1.9M |
| SG Americas Securities35,385 sh | 35,385 | $1.2M |
| VIRGINIA RETIREMENT SYSTEMS ET Al18,800 sh | 18,800 | $636.4K |
| GoalVest Advisory17,400 sh | 17,400 | $589.0K |
| CANADA PENSION PLAN INVESTMENT BOARD15,200 sh | 15,200 | $514.5K |
| Cinctive Capital Management13,833 sh | 13,833 | $468.2K |
| Integrated Quantitative Investments12,868 sh | 12,868 | $435.6K |
| WINTON GROUP Ltd11,266 sh | 11,266 | $381.4K |
| City Center Advisors11,118 sh | 11,118 | $376.3K |
| PDT Partners9,732 sh | 9,732 | $329.4K |
| MANGROVE PARTNERS IM8,719 sh | 8,719 | $295.1K |
| Handelsbanken Fonder AB8,600 sh | 8,600 | $291.0K |
| Headlands Technologies7,792 sh | 7,792 | $263.8K |
| THRIVENT FINANCIAL FOR LUTHERANS7,242 sh | 7,242 | $245.0K |
| Cerity Partners6,391 sh | 6,391 | $216.3K |
| Walleye Capital6,285 sh | 6,285 | $212.7K |
| ACADIAN ASSET MANAGEMENT811 sh | 811 | $27.0K |
| MAI Capital Management339 sh | 339 | $11.5K |
| Vermillion Wealth Management200 sh | 200 | $6.8K |
| FIFTH THIRD BANCORP195 sh | 195 | $6.6K |
| Root Financial Partners46 sh | 46 | $1.6K |
| Wealth Preservation Advisors37 sh | 37 | $1.3K |
| CENTRAL4 sh | 4 | $136.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.