American SuperconductorAMSC

13F holders, Q3 2025 (September 30)
272holders +40
69new positions
29sold out
8famous investors
$59.36avg. 13F price*

At the end of Q3 2025, 272 institutions reported holding American Superconductor Corp. (AMSC) in their 13F filings, up 40 from Q2 2025. 69 opened new positions and 29 sold out. The largest holders were BlackRock, Inc. ($215.5M), Vanguard Group Inc. ($175.2M) and Baillie Gifford & Co. ($84.8M). 8 famous investors held it, including Gavin Baker (1.2% of Atreides Management's portfolio), Paul Tudor Jones (0.1% of Tudor Investment Corporation's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).

Company
American Superconductor Corp.
CUSIP
030111207
Latest filing quarter
Q2 2026

History

Number of 13F holders

0100200300 Q1 2024: 128Q1 2024Q2 2024: 155Q2 2024Q3 2024: 171Q3 2024Q4 2024: 191Q4 2024Q1 2025: 189Q1 2025Q2 2025: 232Q2 2025Q3 2025: 272Q3 2025Q4 2025: 240Q4 2025Q1 2026: 245Q1 2026Q2 2026: 277Q2 2026

Total Exit/New Position Q2 2025 → Q3 2025

InstitutionsTotal Value
New Positions69$146.2M
Exits29$79.0M

All 13F filers, Q2 2025 → Q3 2025: 7,043,151 shares bought and 7,062,823 shares sold, net −19,672 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 272 holders

BlackRock, Inc. 0.00% Add +6.1% 3,629,296 $215.5M
Vanguard Group Inc. 0.00% Add +20.6% 2,949,801 $175.2M
Baillie Gifford & Co. 0.06% Reduce -1.7% 1,427,332 $84.8M
Driehaus Capital Management LLC 0.52% Add +45.1% 1,218,944 $72.4M
Goldman Sachs Group Inc. 0.01% Add +14.1% 1,174,107 $69.7M
State Street Corp. 0.00% Add +11.3% 1,135,878 $67.5M
Geode Capital Management, LLC 0.00% Add +13.8% 1,069,855 $63.5M
Nuveen, LLC 0.01% Reduce -17.2% 826,152 $49.1M
Fuller & Thaler Asset Management, Inc. 0.16% New 809,945 $48.1M
Atreides Management 1.19% Reduce -30.1% 771,495 $45.8M
Arrowstreet Capital, Limited Partnership 0.03% Add +221.7% 760,457 $45.2M
D. E. Shaw & Co. 0.04% Add +463.2% 752,703 $44.7M
AWM Investment Company, Inc. 4.15% Reduce -52.2% 745,470 $44.3M
Telemark Asset Management, LLC 3.89% No change 690,000 $41.0M
Oberweis Asset Management Inc./ 1.51% Reduce -0.4% 665,700 $39.5M
Emerald Advisers, LLC 0.99% Add +4.2% 521,183 $31.0M
Dimensional Fund Advisors LP 0.01% Reduce -1.9% 471,484 $28.0M
Macquarie Group Ltd. 0.03% Reduce -43.4% 465,221 $27.6M
First Trust Advisors LP 0.02% Add +35.8% 458,391 $27.2M
Wellington Management Group LLP 0.00% Reduce -7.5% 399,246 $23.7M
T. Rowe Price Associates Inc. 0.00% Add +1322.9% 396,332 $23.5M
Northern Trust Corp. 0.00% Add +14.8% 392,267 $23.3M
Charles Schwab Investment Management Inc. 0.00% Add +20.2% 388,226 $23.1M
Royce & Associates LP 0.21% Reduce -56.0% 357,580 $21.2M
Morgan Stanley 0.00% Reduce -41.1% 335,765 $19.9M
Renaissance Technologies 0.03% New 323,989 $19.2M
Emerald Mutual Fund Advisers Trust 0.94% Add +43.9% 307,737 $18.3M
Algert Global LLC 0.29% Add +40.0% 287,880 $17.1M
Invesco Ltd. 0.00% Add +79.2% 285,406 $17.0M
Axiom Investors LLC 0.12% New 264,660 $15.7M
Legal & General Group Plc 0.00% Reduce -37.8% 259,563 $15.4M
Qube Research & Technologies Ltd 0.02% Add +98.0% 257,595 $15.3M
Essex Investment Management Co. LLC 2.23% Reduce -29.0% 245,581 $14.6M
Wells Fargo & Company 0.00% Reduce -1.4% 217,826 $12.9M
Panagora Asset Management Inc. 0.05% Add +17.8% 202,594 $12.0M
Allspring Global Investments Holdings, LLC 0.02% Reduce -27.0% 199,571 $11.8M
Bank of America Corp. 0.00% Add +17.1% 198,030 $11.8M
UBS Group AG 0.00% Reduce -2.4% 193,734 $11.5M
Tudor Investment Corporation 0.07% Reduce -32.7% 175,039 $10.4M
Voloridge Investment Management, LLC 0.03% New 171,606 $10.2M
AQR Capital Management 0.01% Reduce -0.1% 168,751 $10.0M
Raymond James Financial Inc. 0.00% Add +0.2% 167,316 $9.9M
Palisades Investment Partners, LLC 3.29% Add +0.4% 141,109 $8.4M
Jane Street Group, LLC 0.01% Reduce -17.1% 136,102 $8.1M
Castleark Management LLC 0.23% Add +24.2% 135,617 $8.1M
Bank of New York Mellon Corp 0.00% Add +10.5% 133,520 $7.9M
Next Century Growth Investors LLC 0.56% New 128,220 $7.6M
Susquehanna International Group, LLP 0.01% Add +33.5% 127,171 $7.6M
Millennium Management 0.01% Reduce -51.4% 122,502 $7.3M
Two Sigma Investments, LP 0.01% Reduce -1.0% 121,623 $7.2M
Lisanti Capital Growth, LLC 1.72% Reduce -34.6% 118,151 $7.0M
Jump Financial, LLC 0.09% Reduce -8.7% 117,498 $7.0M
JPMorgan Chase & Co. 0.00% Add +106.5% 114,888 $6.8M
ArrowMark Colorado Holdings LLC 0.12% Reduce -29.4% 110,432 $6.6M
GMT Capital Corp 0.29% No change 108,066 $6.4M
Prudential Financial Inc. 0.01% Add +204.8% 107,190 $6.4M
FMR LLC 0.00% Add +1254.3% 100,842 $6.0M
Ghisallo Capital Management LLC 0.19% Reduce -50.0% 100,000 $5.9M
Engineers Gate Manager LP 0.07% New 97,495 $5.8M
Osaic Holdings, Inc. 0.01% Reduce -25.2% 113,200 $5.7M
Meridian Wealth Management, LLC 0.21% New 91,102 $5.4M
Andrew Hill Investment Advisors, Inc. 4.11% Reduce -41.8% 88,855 $5.3M
Swiss National Bank 0.00% Add +1.6% 84,600 $5.0M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% Reduce -38.4% 82,637 $4.9M
Informed Momentum Co LLC 0.56% Add +11.5% 83,977 $4.9M
Baird Financial Group, Inc. 0.01% Reduce -2.8% 80,790 $4.8M
Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% Add +697.7% 79,079 $4.7M
Lumbard & Kellner, LLC 1.58% No change 72,439 $4.3M
Verition Fund Management LLC 0.03% Add +91.4% 71,186 $4.2M
Rhumbline Advisers 0.00% Add +15.2% 70,425 $4.2M
Cetera Investment Advisers 0.00% Add +1063.8% 70,366 $4.2M
New York State Common Retirement Fund 0.01% Reduce -0.9% 68,700 $4.1M
Stephens Investment Management Group LLC 0.05% New 67,911 $4.0M
Alps Advisors Inc. 0.02% Add +2.6% 66,325 $3.9M
Sei Investments Co. 0.00% Add +57.3% 66,198 $3.9M
Capital Fund Management S.A. 0.04% Reduce -41.7% 65,535 $3.9M
Campbell Newman Asset Management Inc. 0.28% Add +0.5% 65,365 $3.9M
Kennedy Capital Management LLC 0.08% Reduce -55.8% 64,601 $3.8M
BNP Paribas Financial Markets 0.00% Add +707.7% 63,009 $3.7M
Barclays PLC 0.00% Reduce -22.1% 62,563 $3.7M
Rice Hall James & Associates, LLC 0.20% Reduce -35.9% 60,724 $3.6M
Legato Capital Management LLC 0.38% Reduce -25.1% 58,848 $3.5M
Penserra Capital Management LLC 0.04% Reduce -15.5% 57,728 $3.4M
Aquatic Capital Management LLC 0.06% Add +63.1% 53,873 $3.2M
California State Teachers Retirement System 0.00% Reduce -0.2% 50,677 $3.0M
Cubist Systematic Strategies, LLC 0.04% Add +78.5% 49,508 $2.9M
LPL Financial LLC 0.00% Add +34.3% 48,693 $2.9M
Polen Capital Management LLC 0.01% Add +0.1% 47,291 $2.8M
Group One Trading LLC 0.08% Add +542.6% 46,903 $2.8M
Janney Montgomery Scott LLC 0.01% Reduce -0.1% 45,731 $2.7M
Royal Bank of Canada 0.00% Add +37.7% 43,363 $2.6M
Amundi 0.00% Reduce -4.9% 41,730 $2.5M
Victory Capital Management Inc. 0.00% New 41,389 $2.5M
Principal Financial Group Inc. 0.00% New 39,403 $2.3M
Janus Henderson Group PLC 0.00% Reduce -15.8% 39,350 $2.3M
Alliancebernstein L.P. 0.00% Add +10.1% 39,320 $2.3M
Private Advisor Group, LLC 0.01% New 37,683 $2.2M
Deutsche Bank AG 0.00% Add +30.7% 36,134 $2.1M
HWG Holdings LP 0.53% New 35,468 $2.1M
Cambridge Investment Research Advisors, Inc. 0.01% Add +0.4% 35,077 $2.1M
Mackenzie Financial Corp. 0.00% Reduce -31.1% 34,289 $2.0M
Wolverine Trading, LLC 0.04% New 33,287 $2.0M
Point72 Asset Management 0.00% Reduce -27.2% 33,223 $2.0M
Kornitzer Capital Management Inc. 0.04% Reduce -10.0% 33,000 $2.0M
Focus Partners Wealth 0.00% New 32,919 $1.9M
Merit Financial Group, LLC 0.02% Reduce -36.2% 31,855 $1.9M
SG Americas Securities, LLC 0.01% Add +319.2% 31,823 $1.9M
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% Add +21.7% 30,067 $1.8M
Quantum Private Wealth, LLC 0.51% Add +6.6% 29,223 $1.7M
Quantbot Technologies LP 0.04% Add +257.6% 26,831 $1.6M
Virtus Advisers, LLC 0.87% Add +4.7% 25,990 $1.5M
Los Angeles Capital Management LLC 0.01% Add +3.8% 25,637 $1.5M
Truist Financial Corp. 0.00% Add +14.5% 25,500 $1.5M
MetLife Investment Management, LLC 0.01% New 25,405 $1.5M
IMC-Chicago, LLC 0.03% Add +34.6% 25,044 $1.5M
State Board of Administration of Florida Retirement System 0.00% Add +17.5% 24,264 $1.4M
Dark Forest Capital Management LP 0.05% Reduce -31.3% 23,858 $1.4M
Manufacturers Life Insurance Company, The 0.00% Add +65.0% 22,607 $1.3M
Russell Investments Group, Ltd. 0.00% Add +189.5% 22,393 $1.3M
Dorsey & Whitney Trust CO LLC 0.07% No change 21,611 $1.3M
Credit Agricole S A 0.00% — 21,535 $1.3M
Oppenheimer & Co. Inc. 0.01% Reduce -53.9% 20,100 $1.2M
Intech Investment Management LLC 0.01% Reduce -24.1% 20,007 $1.2M
Hennion & Walsh Asset Management, Inc. 0.04% Add +28.9% 19,711 $1.2M
Ameriprise Financial Inc. 0.00% New 19,021 $1.1M
Fox Run Management, L.L.C. 0.17% Reduce -49.7% 18,861 $1.1M
Comerica Bank 0.00% Add +232.2% 18,808 $1.1M
GoalVest Advisory LLC 0.23% No change 18,400 $1.1M
Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% Add +19.4% 17,806 $1.1M
TFC Financial Management, Inc. 0.13% Add +0.7% 16,842 $1.0M
Advisory Services Network, LLC 0.01% Reduce -1.5% 16,529 $982K
Traynor Capital Management, Inc. 0.06% New 16,410 $975K
STRS Ohio 0.00% Reduce -16.3% 16,400 $974K
Man Group plc 0.00% Reduce -14.8% 16,114 $957K
Schonfeld Strategic Advisors LLC 0.01% New 16,110 $957K
Gsa Capital Partners LLP 0.08% Add +111.4% 15,798 $938K
Citadel Advisors 0.00% Reduce -97.8% 14,821 $880K
Two Sigma Advisers, LP 0.00% New 14,400 $855K
Voya Investment Management LLC 0.00% Reduce -29.0% 14,229 $845K
Commonwealth Equity Services, LLC 0.00% Add +0.9% 13,905 $826K
Truvestments Capital LLC 0.15% Add +5.0% 13,530 $804K
Neo Ivy Capital Management 0.20% New 13,520 $803K
Mariner, LLC 0.00% Add +7.6% 13,227 $786K
Teacher Retirement System of Texas 0.00% Add +119.7% 13,148 $781K
Ieq Capital, LLC 0.00% New 12,889 $765K
Arizona State Retirement System 0.00% Add +3.5% 12,883 $765K
Police & Firemen's Retirement System of New Jersey 0.01% Add +37.5% 12,067 $717K
Mitsubishi UFJ Asset Management Co., Ltd. 0.00% Reduce -10.1% 11,808 $701K
GPS Wealth Strategies Group, LLC 0.07% Add +11.0% 11,437 $679K
Citigroup Inc. 0.00% Reduce -58.5% 11,094 $659K
OMERS ADMINISTRATION Corp 0.00% New 10,700 $635K
Entropy Technologies, LP 0.05% Add +16.9% 10,401 $618K
Sigma Planning Corp 0.02% New 10,293 $611K
Assenagon Asset Management S.A. 0.00% Add +61.2% 10,031 $596K
Kestra Advisory Services, LLC 0.00% Reduce -8.4% 9,913 $589K
NewEdge Advisors, LLC 0.00% Add +1695.3% 9,641 $573K
Diversified Trust Co. 0.01% Add +10.2% 9,500 $564K
ROI Financial Advisors, LLC 0.33% Add +32.3% 9,419 $559K
KLP Kapitalforvaltning As 0.00% No change 9,400 $558K
Integrated Quantitative Investments LLC 0.16% Reduce -20.8% 9,333 $554K
HSBC Holdings PLC 0.00% Reduce -61.1% 8,957 $532K
Ensign Peak Advisors, Inc 0.00% New 8,850 $526K
ProShare Advisors LLC 0.00% Reduce -9.8% 8,634 $513K
Stephens Inc. 0.01% Add +6.3% 8,500 $505K
Cwm, LLC 0.00% Add +18.5% 8,472 $503K
Counterpoint Mutual Funds LLC 0.04% Reduce -30.9% 8,206 $487K
Nissay Asset Management Corp. /Japan 0.00% New 8,065 $479K
Principal Securities, Inc. 0.01% Add +12.2% 7,948 $472K
Axq Capital, LP 0.17% New 7,667 $455K
Creative Planning 0.00% Add +24.0% 7,044 $418K
Baader Bank Aktiengesellschaft 0.03% New 7,063 $418K
Great Valley Advisor Group, Inc. 0.01% Reduce -6.8% 6,741 $400K
Scientech Research LLC 0.14% New 6,585 $391K
State of Wisconsin Investment Board 0.00% New 6,404 $380K
D.A. Davidson & Co. 0.00% New 6,277 $373K
Benjamin Edwards Inc. 0.00% New 6,219 $369K
HRT Financial LP 0.00% Reduce -76.8% 6,194 $367K
Orion Porfolio Solutions, LLC 0.00% Add +0.3% 6,132 $364K
Cornerstone Investment Partners, LLC 0.02% Reduce -8.5% 6,102 $362K
Prostatis Group LLC 0.09% Reduce -17.4% 6,011 $357K
Toth Financial Advisory Corp. 0.04% New 6,000 $356K
Tidal Investments LLC 0.00% New 5,962 $354K
Savant Capital, LLC 0.00% Add +2.3% 5,918 $351K
HighTower Advisors, LLC 0.00% Reduce -10.1% 5,830 $346K
Pictet Asset Management Holding SA 0.00% Reduce -24.8% 5,829 $346K
Jones Financial Companies LLLP 0.00% Add +30.2% 5,839 $342K
Mayflower Financial Advisors, LLC 0.04% No change 5,730 $340K
Oxford Asset Management LLP 0.11% New 5,703 $339K
Kingsview Wealth Management, LLC 0.01% No change 5,670 $337K
Quantinno Capital Management LP 0.00% New 5,565 $331K
Promethium Advisors,llc 0.19% No change 5,500 $327K
Cinctive Capital Management LP 0.02% New 5,256 $312K
Wealth Enhancement Advisory Services, LLC 0.00% New 5,484 $310K
Vontobel Holding Ltd. 0.00% New 5,021 $298K
CIBC Bancorp USA Inc. 0.00% — 4,659 $277K
Cim, LLC 0.04% New 4,632 $275K
PNC Financial Services Group, Inc. 0.00% Add +13.6% 4,542 $270K
Occudo Quantitative Strategies LP 0.03% Reduce -62.5% 4,100 $243K
Squarepoint Ops LLC 0.00% Reduce -97.2% 4,086 $243K
Cerity Partners LLC 0.00% New 3,906 $232K
Aigen Investment Management, LP 0.04% New 3,822 $227K
Bank of Montreal 0.00% New 3,797 $226K
Captrust Financial Advisors 0.00% New 3,755 $223K
Anb Bank 0.09% New 3,721 $221K
Arax Advisory Partners 0.00% New 3,672 $218K
Ameritas Investment Partners, Inc. 0.01% Reduce -6.4% 3,652 $217K
SBI Securities Co., Ltd. 0.01% Reduce -11.9% 3,408 $202K
Hartline Investment Corp./ 0.02% New 3,400 $202K
Vanguard Personalized Indexing Management, LLC 0.00% New 3,385 $201K
Xponance LLC 0.00% New 3,379 $201K
Global Retirement Partners, LLC 0.00% Add +33.0% 3,212 $191K
Steward Partners Investment Advisory, LLC 0.00% No change 2,625 $156K
Stance Capital LLC 0.06% New 2,606 $155K
State of Alaska, Department of Revenue 0.00% New 2,099 $124K
Mark Sheptoff Financial Planning, LLC 0.06% New 2,000 $119K
Tower Research Capital LLC (TRC) 0.00% Reduce -71.8% 1,622 $96K
KBC Group NV 0.00% New 1,613 $96K
Once Capital Management, LLC 0.03% New 1,600 $95K
Banque Cantonale Vaudoise 0.00% No change 1,585 $94K
Acadian Asset Management LLC 0.00% New 1,595 $94K
Simplex Trading, LLC 0.00% Reduce -85.2% 1,363 $80K
Essential Partners LLC 0.03% Add +12.2% 1,292 $77K
Canada Pension Plan Investment Board 0.00% Reduce -40.0% 1,200 $71K
Amalgamated Bank 0.00% No change 1,185 $70K
Rockefeller Capital Management L.P. 0.00% New 1,071 $64K
GAMMA Investing LLC 0.00% Add +2.9% 982 $58K
Signaturefd, LLC 0.00% No change 913 $54K
Point72 (DIFC) Ltd 0.00% Reduce -29.1% 791 $47K
Allworth Financial LP 0.00% Add +7.3% 735 $44K
Federation des caisses Desjardins du Quebec 0.00% Add +123.6% 700 $42K
Versant Capital Management, Inc 0.01% No change 628 $37K
Nisa Investment Advisors, LLC 0.00% No change 529 $31K
BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.00% Add +15.2% 455 $27K
SWAN Capital LLC 0.01% New 400 $24K
Clearstead Trust, LLC 0.00% No change 393 $23K
Montag A & Associates Inc. 0.00% New 393 $23K
Franklin Resources Inc. 0.00% Reduce -99.5% 266 $20K
Spire Wealth Management 0.00% Add +239.1% 217 $13K
Sunbelt Securities, Inc. 0.00% New 205 $12K
EverSource Wealth Advisors, LLC 0.00% Add +6.5% 197 $12K
WPG Advisers, LLC 0.01% New 168 $10K
MCF Advisors LLC 0.00% New 164 $10K
Hillsdale Investment Management Inc. 0.00% Reduce -99.9% 150 $9K
Parallel Advisors, LLC 0.00% Add +8.2% 146 $9K
Wealthspire Advisors, LLC 0.00% New 114 $7K
Sterling Capital Management LLC 0.00% Add +15.2% 106 $6K
Archer Investment Corp 0.00% No change 100 $6K
Trust Co. of Vermont 0.00% No change 100 $6K
TD Waterhouse Canada Inc. 0.00% New 100 $6K
Private Trust Co. NA 0.00% Reduce -25.0% 75 $4K
ORG Partners LLC 0.00% New 70 $4K
Rothschild Investment LLC 0.00% Reduce -13.3% 65 $4K
Quarry LP 0.00% Reduce -94.6% 61 $4K
Hager Investment Management Services, LLC 0.00% No change 50 $3K
Whittier Trust Co. of Nevada Inc. 0.00% No change 40 $2K
Clearstead Advisors, LLC 0.00% New 35 $2K
Federated Hermes, Inc. 0.00% No change 34 $2K
Fortitude Family Office, LLC 0.00% No change 33 $2K
CIBC Private Wealth Group LLC 0.00% No change 25 $1K
Rise Advisors, LLC 0.00% No change 24 $1K
IFP Advisors, Inc 0.00% Add +60.0% 24 $1K
Larson Financial Group LLC 0.00% Reduce -89.3% 18 $1K
Smartleaf Asset Management LLC 0.00% New 16 $973
National Bank of Canada 0.00% Reduce -50.0% 10 $594
JFS Wealth Advisors, LLC 0.00% No change 10 $594
True Wealth Design, LLC 0.00% No change 7 $416
Farther Finance Advisors, LLC 0.00% Reduce -99.1% 5 $297
MassMutual Private Wealth & Trust, FSB 0.00% New 3 $178
Tortoise Investment Management, LLC 0.00% New 2 $119
AlphaQuest LLC 0.00% New 2 $119
Turning Point Benefit Group, Inc. 0.00% New 2 $118
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.