American SuperconductorAMSC
13F holders, Q1 2026 (March 31)245holders +5
48new positions
42sold out
4famous investors
$33.83avg. 13F price*
At the end of Q1 2026, 245 institutions reported holding American Superconductor Corp. (AMSC) in their 13F filings, up 5 from Q4 2025. 48 opened new positions and 42 sold out. The largest holders were BlackRock, Inc. ($134.8M), Vanguard Capital Management LLC ($69.0M) and Vanguard Portfolio Management LLC ($57.9M). 4 famous investors held it, including David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio), Ken Griffin (0.0% of Citadel Advisors'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 Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 48 | $85.3M |
| Exits | 42 | $94.7M |
All 13F filers, Q4 2025 → Q1 2026: 5,035,672 shares bought and 5,454,379 shares sold, net −418,707 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 245 holders
| BlackRock, Inc. | 0.00% | Add +6.2% | 3,982,650 | $134.8M |
| Vanguard Capital Management LLC | 0.00% | — | 2,039,468 | $69.0M |
| Vanguard Portfolio Management LLC | 0.00% | — | 1,711,677 | $57.9M |
| Baillie Gifford & Co. | 0.05% | Reduce -3.9% | 1,447,419 | $49.0M |
| State Street Corp. | 0.00% | Add +5.8% | 1,261,071 | $42.7M |
| Geode Capital Management, LLC | 0.00% | Add +7.2% | 1,169,152 | $39.6M |
| Barrow Hanley Mewhinney & Strauss LLC | 0.13% | New | 1,139,793 | $38.6M |
| Nuveen, LLC | 0.01% | Add +6.2% | 1,020,947 | $34.6M |
| Oberweis Asset Management Inc./ | 0.85% | Add +1.7% | 849,900 | $28.8M |
| AWM Investment Company, Inc. | 3.00% | Add +6.3% | 801,604 | $27.1M |
| First Trust Advisors LP | 0.02% | Add +13.9% | 778,268 | $26.3M |
| Emerald Advisers, LLC | 0.81% | Reduce -0.0% | 757,404 | $25.6M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -9.3% | 709,504 | $24.0M |
| Dimensional Fund Advisors LP | 0.00% | Add +21.9% | 658,297 | $22.3M |
| Morgan Stanley | 0.00% | Reduce -10.2% | 633,841 | $21.5M |
| Telemark Asset Management, LLC | 1.88% | Reduce -3.2% | 600,000 | $20.3M |
| UBS Group AG | 0.00% | Reduce -19.4% | 599,821 | $20.3M |
| D. E. Shaw & Co. | 0.02% | Add +28.1% | 567,574 | $19.2M |
| Royce & Associates LP | 0.18% | Add +40.2% | 542,778 | $18.4M |
| Legal & General Group Plc | 0.00% | Add +90.7% | 530,131 | $17.9M |
| Algert Global LLC | 0.25% | Add +6.3% | 489,971 | $16.6M |
| Arrowstreet Capital, Limited Partnership | 0.01% | Reduce -34.6% | 446,752 | $15.1M |
| Emerald Mutual Fund Advisers Trust | 0.72% | Add +0.8% | 438,875 | $14.9M |
| BNP Paribas Financial Markets | 0.01% | Add +429.3% | 436,687 | $14.8M |
| Hood River Capital Management LLC | 0.14% | New | 398,711 | $13.5M |
| Northern Trust Corp. | 0.00% | Add +9.0% | 393,224 | $13.3M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -0.5% | 385,414 | $13.0M |
| Nomura Asset Management International Inc. | 0.02% | Reduce -17.5% | 379,483 | $12.8M |
| Qube Research & Technologies Ltd | 0.02% | Reduce -45.0% | 329,413 | $11.2M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 326,042 | $11.0M |
| Stephens Investment Management Group LLC | 0.14% | Add +77.1% | 308,515 | $10.4M |
| Portolan Capital Management, LLC | 0.53% | New | 295,636 | $10.0M |
| Panagora Asset Management Inc. | 0.03% | Add +0.6% | 256,392 | $8.7M |
| Invesco Ltd. | 0.00% | Reduce -37.6% | 240,792 | $8.2M |
| Essex Investment Management Co. LLC | 1.22% | Add +5.8% | 227,558 | $7.7M |
| Sei Investments Co. | 0.01% | Add +184.8% | 224,436 | $7.6M |
| Citadel Advisors | 0.01% | Reduce -35.8% | 216,713 | $7.3M |
| Bank of America Corp. | 0.00% | Add +26.5% | 209,451 | $7.1M |
| AQR Capital Management | 0.00% | Add +26.6% | 184,755 | $6.3M |
| Two Sigma Investments, LP | 0.00% | Reduce -47.4% | 169,016 | $5.7M |
| Baird Financial Group, Inc. | 0.01% | Add +21.0% | 163,258 | $5.5M |
| Palisades Investment Partners, LLC | 2.02% | Add +5.8% | 152,576 | $5.2M |
| FMR LLC | 0.00% | Add +18.4% | 147,293 | $5.0M |
| Allspring Global Investments Holdings, LLC | 0.01% | Reduce -26.9% | 149,601 | $4.9M |
| Balyasny Asset Management L.P. | 0.01% | Reduce -5.7% | 144,144 | $4.9M |
| ArrowMark Colorado Holdings LLC | 0.12% | Add +22.6% | 135,432 | $4.6M |
| Bank of New York Mellon Corp | 0.00% | Reduce -1.6% | 134,790 | $4.6M |
| JPMorgan Chase & Co. | 0.00% | Add +11.2% | 136,845 | $4.4M |
| Raymond James Financial Inc. | 0.00% | Reduce -12.6% | 123,954 | $4.2M |
| GMT Capital Corp | 0.17% | New | 108,066 | $3.7M |
| Millennium Management | 0.00% | Add +30.1% | 101,576 | $3.4M |
| Axiom Investors LLC | 0.04% | Reduce -24.8% | 100,814 | $3.4M |
| Swiss National Bank | 0.00% | No change | 89,100 | $3.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +14.5% | 88,386 | $3.0M |
| LPL Financial LLC | 0.00% | Add +117.9% | 87,323 | $3.0M |
| Alps Advisors Inc. | 0.01% | Add +39.1% | 86,561 | $2.9M |
| Mackenzie Financial Corp. | 0.00% | Add +92.7% | 77,542 | $2.6M |
| Maxi Investments CY Ltd | 0.56% | New | 75,754 | $2.6M |
| Lumbard & Kellner, LLC | 0.86% | Add +3.5% | 73,669 | $2.5M |
| New York State Common Retirement Fund | 0.00% | No change | 70,400 | $2.4M |
| Kennedy Capital Management LLC | 0.05% | Add +2.4% | 66,167 | $2.2M |
| Boston Partners | 0.00% | New | 66,071 | $2.2M |
| Campbell Newman Asset Management Inc. | 0.18% | Add +1.9% | 64,337 | $2.2M |
| Ameriprise Financial Inc. | 0.00% | Add +5.7% | 62,336 | $2.1M |
| Susquehanna International Group, LLP | 0.00% | Reduce -5.8% | 61,814 | $2.1M |
| Rhumbline Advisers | 0.00% | Add +3.5% | 59,683 | $2.0M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -78.7% | 58,612 | $2.0M |
| Amundi | 0.00% | Add +25.6% | 58,169 | $2.0M |
| Wells Fargo & Company | 0.00% | Reduce -56.6% | 58,158 | $2.0M |
| California State Teachers Retirement System | 0.00% | Add +12.0% | 57,016 | $1.9M |
| Janney Montgomery Scott LLC | 0.00% | Add +22.8% | 56,946 | $1.9M |
| Lazard Asset Management LLC | 0.00% | New | 56,452 | $1.9M |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Add +22.6% | 48,551 | $1.6M |
| Rice Hall James & Associates, LLC | 0.09% | No change | 47,114 | $1.6M |
| Los Angeles Capital Management LLC | 0.01% | Add +69.7% | 43,512 | $1.5M |
| Tidal Investments LLC | 0.00% | Add +79.3% | 43,369 | $1.5M |
| HighTower Advisors, LLC | 0.00% | Add +312.9% | 43,267 | $1.5M |
| Deutsche Bank AG | 0.00% | Add +10.8% | 42,918 | $1.5M |
| Defiance ETFs, LLC | 0.02% | New | 42,227 | $1.4M |
| Legato Capital Management LLC | 0.12% | Reduce -1.4% | 40,121 | $1.4M |
| Quadrature Capital Ltd | 0.02% | New | 39,140 | $1.3M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +18.3% | 38,802 | $1.3M |
| Alliancebernstein L.P. | 0.00% | Add +13.0% | 44,420 | $1.3M |
| Russell Investments Group, Ltd. | 0.00% | Add +6.6% | 37,364 | $1.3M |
| Merit Financial Group, LLC | 0.01% | Reduce -1.0% | 36,918 | $1.2M |
| SG Americas Securities, LLC | 0.00% | Reduce -50.2% | 35,385 | $1.2M |
| Kornitzer Capital Management Inc. | 0.03% | Reduce -3.3% | 34,973 | $1.2M |
| Hennion & Walsh Asset Management, Inc. | 0.04% | Add +72.3% | 33,355 | $1.1M |
| Focus Partners Wealth | 0.00% | Reduce -3.0% | 33,261 | $1.1M |
| Truist Financial Corp. | 0.00% | No change | 32,700 | $1.1M |
| Royal Bank of Canada | 0.00% | Reduce -30.6% | 31,336 | $1.1M |
| Quantum Private Wealth, LLC | 0.33% | Add +6.8% | 31,223 | $1.1M |
| Journey Strategic Wealth LLC | 0.03% | Add +17.9% | 31,117 | $1.1M |
| Franklin Resources Inc. | 0.00% | Reduce -15.9% | 29,478 | $998K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | — | 29,288 | $991K |
| Virtus Advisers, LLC | 0.44% | Add +5.6% | 27,452 | $929K |
| ExodusPoint Capital Management, LP | 0.01% | Reduce -62.6% | 26,490 | $897K |
| MetLife Investment Management, LLC | 0.00% | Add +1.1% | 25,691 | $870K |
| Nissay Asset Management Corp. /Japan | 0.00% | Add +23.8% | 25,387 | $859K |
| Oppenheimer & Co. Inc. | 0.01% | New | 25,284 | $856K |
| Mariner, LLC | 0.00% | Add +22.3% | 25,150 | $851K |
| Ardsley Advisory Partners LP | 0.13% | New | 25,000 | $846K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 24,264 | $821K |
| Verity Asset Management, Inc. | 0.32% | New | 22,280 | $754K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Reduce -0.5% | 22,248 | $753K |
| Globeflex Capital L P | 0.11% | No change | 21,633 | $732K |
| Dorsey & Whitney Trust CO LLC | 0.04% | No change | 21,611 | $732K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +2.0% | 20,828 | $705K |
| Round Rock Advisors LLC | 0.11% | Add +89.9% | 20,340 | $689K |
| Dark Forest Capital Management LP | 0.06% | New | 20,276 | $686K |
| Janus Henderson Group PLC | 0.00% | No change | 20,134 | $681K |
| Vanguard Global Advisers, LLC | 0.00% | — | 19,494 | $660K |
| VIRGINIA RETIREMENT SYSTEMS ET Al | 0.00% | Add +13.9% | 18,800 | $636K |
| Assenagon Asset Management S.A. | 0.00% | Add +110.1% | 18,679 | $632K |
| Intech Investment Management LLC | 0.01% | Reduce -30.7% | 18,079 | $612K |
| STRS Ohio | 0.00% | Reduce -16.5% | 17,700 | $599K |
| Barclays PLC | 0.00% | Reduce -76.3% | 17,514 | $593K |
| GoalVest Advisory LLC | 0.12% | Reduce -2.8% | 17,400 | $589K |
| F/m Investments LLC | 0.04% | Add +26.9% | 17,099 | $579K |
| Truvestments Capital LLC | 0.10% | Add +9.2% | 16,872 | $571K |
| TFC Financial Management, Inc. | 0.07% | No change | 16,741 | $567K |
| Advisory Services Network, LLC | 0.01% | Add +1.7% | 16,677 | $565K |
| PFG Investments, LLC | 0.03% | New | 15,830 | $536K |
| Traynor Capital Management, Inc. | 0.03% | Add +0.3% | 16,209 | $522K |
| Canada Pension Plan Investment Board | 0.00% | Reduce -30.3% | 15,200 | $515K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | Add +6.6% | 15,122 | $512K |
| Voya Investment Management LLC | 0.00% | Reduce -0.8% | 14,242 | $482K |
| Aviva PLC | 0.00% | New | 14,134 | $478K |
| Diversified Trust Co. | 0.01% | Add +13.2% | 13,936 | $472K |
| Cinctive Capital Management LP | 0.03% | New | 13,833 | $468K |
| Quantinno Capital Management LP | 0.00% | Add +0.5% | 13,002 | $440K |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | Reduce -2.9% | 12,899 | $437K |
| Integrated Quantitative Investments LLC | 0.08% | New | 12,868 | $436K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +10.8% | 12,674 | $429K |
| Arizona State Retirement System | 0.00% | Reduce -0.9% | 12,411 | $420K |
| Group One Trading LLC | 0.01% | Add +303.8% | 12,278 | $416K |
| Holocene Advisors, LP | 0.00% | New | 12,128 | $411K |
| WINTON GROUP Ltd | 0.01% | Add +20.0% | 11,266 | $381K |
| City Center Advisors, LLC | 0.35% | Add +47.9% | 11,118 | $376K |
| ProShare Advisors LLC | 0.00% | Reduce -6.0% | 10,955 | $371K |
| Commonwealth Equity Services, LLC | 0.00% | Add +6.9% | 10,793 | $365K |
| Credit Agricole S A | 0.00% | Reduce -48.9% | 10,745 | $364K |
| ROI Financial Advisors, LLC | 0.22% | Add +5.9% | 10,731 | $363K |
| Osaic Holdings, Inc. | 0.00% | Reduce -5.5% | 10,591 | $358K |
| Vanguard Investments Australia, Ltd. | 0.00% | — | 10,492 | $355K |
| Principal Securities, Inc. | 0.01% | Add +20.1% | 10,368 | $351K |
| Summit Financial, LLC | 0.00% | New | 10,277 | $348K |
| State of Alaska, Department of Revenue | 0.00% | Add +65.1% | 10,146 | $343K |
| KLP Kapitalforvaltning As | 0.00% | Add +7.5% | 10,100 | $342K |
| Victory Capital Management Inc. | 0.00% | Reduce -86.9% | 10,088 | $341K |
| Cetera Investment Advisers | 0.00% | Reduce -12.3% | 10,023 | $339K |
| PDT Partners, LLC | 0.02% | No change | 9,732 | $329K |
| Creative Planning | 0.00% | New | 9,219 | $312K |
| Central Pacific Bank - Trust Division | 0.04% | New | 9,175 | $311K |
| Cwm, LLC | 0.00% | Add +13.8% | 8,823 | $299K |
| US Bancorp \de | 0.00% | Add +0.7% | 8,821 | $299K |
| Mangrove Partners Im, LLC | 0.02% | New | 8,719 | $295K |
| Handelsbanken Fonder AB | 0.00% | No change | 8,600 | $291K |
| Morgan Dempsey Capital Management LLC | 0.13% | New | 8,510 | $288K |
| Cornerstone Investment Partners, LLC | 0.01% | New | 8,002 | $271K |
| Fund Advisors of America Inc | 0.27% | Reduce -27.6% | 7,999 | $271K |
| Headlands Technologies LLC | 0.03% | Reduce -77.3% | 7,792 | $264K |
| Pictet Asset Management Holding SA | 0.00% | New | 7,413 | $251K |
| Prudential Financial Inc. | 0.00% | New | 7,280 | $246K |
| Thrivent Financial for Lutherans | 0.00% | New | 7,242 | $245K |
| Axq Capital, LP | 0.03% | Reduce -61.8% | 7,231 | $245K |
| Jones Financial Companies LLLP | 0.00% | Reduce -8.8% | 7,159 | $241K |
| Kingsview Wealth Management, LLC | 0.00% | No change | 6,995 | $237K |
| Great Valley Advisor Group, Inc. | 0.00% | New | 6,891 | $233K |
| D.A. Davidson & Co. | 0.00% | Reduce -3.0% | 6,794 | $230K |
| Wellington Shields Capital Management, LLC | 0.03% | New | 6,565 | $222K |
| Cerity Partners LLC | 0.00% | New | 6,391 | $216K |
| Orion Porfolio Solutions, LLC | 0.00% | New | 6,331 | $214K |
| EntryPoint Capital, LLC | 0.06% | New | 6,312 | $214K |
| Walleye Capital LLC | 0.00% | Reduce -90.3% | 6,285 | $213K |
| Savant Capital, LLC | 0.00% | New | 6,069 | $205K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | New | 6,401 | $205K |
| Acorn Financial Advisory Services Inc. | 0.03% | New | 6,004 | $203K |
| Walleye Trading LLC | 0.00% | New | 5,065 | $171K |
| Citigroup Inc. | 0.00% | Add +206.5% | 4,889 | $165K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +61.7% | 4,675 | $158K |
| State of Wyoming | 0.02% | Add +53.1% | 4,624 | $157K |
| Ensign Peak Advisors, Inc | 0.00% | No change | 4,550 | $154K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 3,652 | $124K |
| SBI Securities Co., Ltd. | 0.00% | Add +1.4% | 2,731 | $92K |
| Federation des caisses Desjardins du Quebec | 0.00% | No change | 2,625 | $89K |
| Optiver Holding B.V. | 0.00% | New | 1,882 | $64K |
| Kemnay Advisory Services Inc. | 0.01% | New | 1,867 | $63K |
| KBC Group NV | 0.00% | No change | 1,613 | $55K |
| Rockefeller Capital Management L.P. | 0.00% | Add +0.6% | 1,573 | $53K |
| Essential Partners LLC | 0.01% | Add +1.1% | 1,165 | $39K |
| GAMMA Investing LLC | 0.00% | Add +4.3% | 1,128 | $38K |
| Lodestone Wealth Management LLC | 0.01% | No change | 1,054 | $36K |
| Allworth Financial LP | 0.00% | Add +45.8% | 1,044 | $35K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.00% | Add +26.7% | 887 | $30K |
| Acadian Asset Management LLC | 0.00% | Reduce -94.2% | 811 | $27K |
| Versant Capital Management, Inc | 0.00% | Reduce -10.9% | 665 | $23K |
| NewEdge Advisors, LLC | 0.00% | Reduce -17.9% | 633 | $21K |
| Nisa Investment Advisors, LLC | 0.00% | Add +3.0% | 545 | $18K |
| SWAN Capital LLC | 0.01% | Add +25.0% | 500 | $17K |
| Wealth Enhancement Trust Services, Inc. | 0.00% | New | 399 | $14K |
| Clearstead Trust, LLC | 0.00% | No change | 393 | $13K |
| PNC Financial Services Group, Inc. | 0.00% | Reduce -92.0% | 341 | $12K |
| Arax Advisory Partners | 0.00% | Add +3214.3% | 232 | $12K |
| MAI Capital Management | 0.00% | Add +276.7% | 339 | $11K |
| Sterling Capital Management LLC | 0.00% | Add +3.1% | 299 | $10K |
| National Bank of Canada | 0.00% | Add +145.0% | 294 | $10K |
| SHP Wealth Management | 0.00% | No change | 271 | $9K |
| Spire Wealth Management | 0.00% | Add +65.6% | 260 | $9K |
| Stance Capital LLC | 0.00% | New | 220 | $7K |
| CoreCap Advisors, LLC | 0.00% | Reduce -54.5% | 220 | $7K |
| Sunbelt Securities, Inc. | 0.00% | No change | 205 | $7K |
| Harbour Investments, Inc. | 0.00% | New | 201 | $7K |
| Vermillion Wealth Management, Inc. | 0.00% | No change | 200 | $7K |
| Fifth Third Bancorp | 0.00% | New | 195 | $7K |
| Bullock Wealth Management Group | 0.00% | Reduce -38.1% | 190 | $6K |
| Owl Creek Wealth Partners LLC | 0.00% | — | 175 | $6K |
| Signaturefd, LLC | 0.00% | Reduce -12.8% | 163 | $6K |
| EverSource Wealth Advisors, LLC | 0.00% | Add +20.2% | 149 | $5K |
| Parallel Advisors, LLC | 0.00% | Reduce -7.5% | 135 | $5K |
| Smartleaf Asset Management LLC | 0.00% | Add +130.2% | 122 | $4K |
| Northwestern Mutual Wealth Management Co. | 0.00% | Reduce -35.3% | 110 | $4K |
| Archer Investment Corp | 0.00% | No change | 100 | $3K |
| Private Trust Co. NA | 0.00% | Add +100.0% | 100 | $3K |
| TD Waterhouse Canada Inc. | 0.00% | No change | 100 | $3K |
| WPG Advisers, LLC | 0.00% | Add +6.9% | 93 | $3K |
| Rothschild Investment LLC | 0.00% | Add +76.5% | 90 | $3K |
| Wellington Shields & Co., LLC | 0.00% | New | 67 | $2K |
| Kilter Group LLC | 0.00% | New | 63 | $2K |
| Hager Investment Management Services, LLC | 0.00% | No change | 50 | $2K |
| Root Financial Partners, LLC | 0.00% | New | 46 | $2K |
| Whittier Trust Co. of Nevada Inc. | 0.00% | No change | 40 | $1K |
| Wealth Preservation Advisors, LLC | 0.00% | New | 37 | $1K |
| IFP Advisors, Inc | 0.00% | Reduce -77.9% | 36 | $1K |
| Farther Finance Advisors, LLC | 0.00% | Reduce -94.0% | 34 | $1K |
| True Wealth Design, LLC | 0.00% | Add +300.0% | 28 | $948 |
| Fortitude Family Office, LLC | 0.00% | Reduce -45.5% | 18 | $609 |
| Keating Financial Advisory Services, Inc. | 0.00% | Add +38.5% | 18 | $609 |
| Basecamp Wealth Advisors LLC | 0.00% | New | 13 | $440 |
| JFS Wealth Advisors, LLC | 0.00% | No change | 10 | $339 |
| Larson Financial Group LLC | 0.00% | New | 9 | $305 |
| MassMutual Private Wealth & Trust, FSB | 0.00% | Add +66.7% | 5 | $169 |
| CENTRAL TRUST Co | 0.00% | No change | 4 | $136 |
| SJS Investment Consulting Inc. | 0.00% | Reduce -60.0% | 2 | $68 |
| Covestor Ltd | 0.00% | No change | 4 | $0 |
"% of holder's portfolio" is AMSC's weight in each manager's 13F, not the share of American Superconductor Corp. the manager owns.