American SuperconductorAMSC
13F holders, Q2 2024 (June 30)155holders +27
48new positions
23sold out
6famous investors
$23.39avg. 13F price*
At the end of Q2 2024, 155 institutions reported holding American Superconductor Corp. (AMSC) in their 13F filings, up 27 from Q1 2024. 48 opened new positions and 23 sold out. The largest holders were BlackRock Inc. ($59.5M), Baillie Gifford & Co. ($51.8M) and AWM Investment Company, Inc. ($50.4M). 6 famous investors held it, including David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio), Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- American Superconductor Corp.
- CUSIP
- 030111207
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2024 → Q2 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 48 | $28.9M |
| Exits | 23 | $12.8M |
All 13F filers, Q1 2024 → Q2 2024: 7,805,457 shares bought and 3,850,777 shares sold, net +3,954,680 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 155 holders
| BlackRock Inc. | 0.00% | Add +240.9% | 2,544,019 | $59.5M |
| Baillie Gifford & Co. | 0.04% | Reduce -12.4% | 2,214,083 | $51.8M |
| AWM Investment Company, Inc. | 6.81% | Reduce -19.1% | 2,153,855 | $50.4M |
| Vanguard Group Inc. | 0.00% | Add +22.8% | 2,086,720 | $48.8M |
| Hood River Capital Management LLC | 0.84% | Add +7.2% | 1,735,014 | $40.6M |
| Assenagon Asset Management S.A. | 0.06% | Add +643.4% | 1,057,064 | $24.7M |
| Royce & Associates LP | 0.21% | Reduce -17.6% | 982,963 | $23.0M |
| Driehaus Capital Management LLC | 0.21% | Reduce -1.1% | 921,998 | $21.6M |
| Geode Capital Management, LLC | 0.00% | Add +110.8% | 810,901 | $19.0M |
| Morgan Stanley | 0.00% | Add +56.2% | 806,416 | $18.9M |
| State Street Corp. | 0.00% | Add +129.3% | 766,144 | $17.9M |
| Invesco Ltd. | 0.00% | Reduce -22.6% | 669,336 | $15.7M |
| Oberweis Asset Management Inc./ | 0.95% | Add +4.7% | 664,400 | $15.5M |
| D. E. Shaw & Co. | 0.02% | Add +125.6% | 650,257 | $15.2M |
| Telemark Asset Management, LLC | 1.27% | Add +50.0% | 600,000 | $14.0M |
| Essex Investment Management Co. LLC | 2.53% | Reduce -1.1% | 577,626 | $13.5M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -8.3% | 532,216 | $12.5M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.05% | Add +32.1% | 522,913 | $12.2M |
| Citadel Advisors | 0.01% | Add +14.6% | 380,795 | $8.9M |
| Millennium Management | 0.01% | Reduce -25.0% | 374,848 | $8.8M |
| Goldman Sachs Group Inc. | 0.00% | Add +45.4% | 362,829 | $8.5M |
| Nuveen Asset Management, LLC | 0.00% | New | 285,623 | $6.7M |
| First Trust Advisors LP | 0.01% | Add +12.2% | 281,710 | $6.6M |
| ArrowMark Colorado Holdings LLC | 0.07% | Reduce -19.6% | 246,432 | $5.8M |
| Informed Momentum Co LLC | 0.78% | Add +223.2% | 203,926 | $4.8M |
| Hillsdale Investment Management Inc. | 0.35% | Add +1583.6% | 190,250 | $4.4M |
| Renaissance Technologies | 0.01% | Add +65.7% | 187,989 | $4.4M |
| Trexquant Investment LP | 0.07% | Add +59.1% | 185,848 | $4.3M |
| Cubist Systematic Strategies, LLC | 0.07% | Reduce -24.3% | 178,727 | $4.2M |
| ClariVest Asset Management LLC | 0.37% | Add +79.4% | 156,560 | $3.7M |
| Rice Hall James & Associates, LLC | 0.21% | New | 148,288 | $3.5M |
| Hussman Strategic Advisors, Inc. | 0.81% | Add +20.0% | 126,000 | $2.9M |
| Acadian Asset Management LLC | 0.01% | Add +158.2% | 124,488 | $2.9M |
| Bank of New York Mellon Corp | 0.00% | Add +524.1% | 122,239 | $2.9M |
| Palisades Investment Partners, LLC | 1.42% | — | 122,239 | $2.9M |
| SG Americas Securities, LLC | 0.02% | New | 115,615 | $2.7M |
| Prescott Group Capital Management, L.L.C. | 0.41% | No change | 111,091 | $2.6M |
| Andrew Hill Investment Advisors, Inc. | 2.14% | Reduce -5.3% | 110,107 | $2.6M |
| GMT Capital Corp | 0.09% | No change | 108,066 | $2.5M |
| Bridgeway Capital Management, LLC | 0.05% | Reduce -23.1% | 99,700 | $2.3M |
| Legato Capital Management LLC | 0.31% | Add +10.2% | 98,787 | $2.3M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +513.0% | 97,873 | $2.3M |
| Voloridge Investment Management, LLC | 0.01% | New | 95,038 | $2.2M |
| Walleye Capital LLC | 0.02% | Add +9273.7% | 90,737 | $2.1M |
| Northern Trust Corp. | 0.00% | Add +22.4% | 87,751 | $2.1M |
| JPMorgan Chase & Co. | 0.00% | Add +177.4% | 86,177 | $2.0M |
| Alps Advisors Inc. | 0.01% | Reduce -7.2% | 81,785 | $1.9M |
| Bantamac Capital, LLC | 1.11% | Add +242.2% | 79,389 | $1.9M |
| Qube Research & Technologies Ltd | 0.00% | Reduce -77.8% | 71,120 | $1.7M |
| New York State Common Retirement Fund | 0.00% | Add +24.8% | 69,500 | $1.6M |
| Merit Financial Group, LLC | 0.04% | Reduce -11.5% | 68,954 | $1.6M |
| Jane Street Group, LLC | 0.00% | Reduce -80.9% | 68,070 | $1.6M |
| Lisanti Capital Growth, LLC | 0.35% | New | 62,495 | $1.5M |
| Susquehanna International Group, LLP | 0.00% | Add +238.9% | 57,842 | $1.4M |
| Arrowstreet Capital, Limited Partnership | 0.00% | Reduce -57.4% | 57,014 | $1.3M |
| UBS Group AG | 0.00% | Add +244.6% | 55,990 | $1.3M |
| GTS Securities LLC | 0.03% | Add +7.4% | 53,853 | $1.3M |
| Stephens Inc. | 0.02% | New | 53,367 | $1.2M |
| Tudor Investment Corporation | 0.01% | New | 48,276 | $1.1M |
| BNP Paribas Financial Markets | 0.00% | New | 47,640 | $1.1M |
| Rhumbline Advisers | 0.00% | Add +3234.0% | 46,276 | $1.1M |
| LPL Financial LLC | 0.00% | Add +251.0% | 44,994 | $1.1M |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Reduce -7.3% | 42,033 | $983K |
| Ardsley Advisory Partners LP | 0.17% | Reduce -46.7% | 40,000 | $936K |
| Healthcare of Ontario Pension Plan Trust Fund | 0.00% | Add +2.2% | 39,146 | $916K |
| Laurion Capital Management LP | 0.03% | Reduce -87.3% | 38,206 | $894K |
| Raymond James Financial Services Advisors, Inc. | 0.00% | New | 37,318 | $873K |
| Alliancebernstein L.P. | 0.00% | New | 35,720 | $835K |
| Graham Capital Management, L.P. | 0.05% | Add +31.6% | 35,380 | $828K |
| Engineers Gate Manager LP | 0.02% | Add +45.3% | 35,100 | $821K |
| Alpine Global Management, LLC | 0.15% | New | 32,327 | $756K |
| Jump Financial, LLC | 0.02% | Reduce -72.1% | 32,300 | $755K |
| Simplex Trading, LLC | 0.02% | Reduce -40.3% | 32,021 | $748K |
| GoalVest Advisory LLC | 0.22% | No change | 29,930 | $700K |
| Bank of America Corp. | 0.00% | Reduce -14.0% | 28,223 | $660K |
| T. Rowe Price Associates Inc. | 0.00% | Add +64.3% | 27,779 | $650K |
| Semanteon Capital Management, LP | 0.45% | New | 27,114 | $634K |
| Royal Bank of Canada | 0.00% | Reduce -5.7% | 27,010 | $632K |
| Two Sigma Investments, LP | 0.00% | Reduce -26.5% | 26,400 | $617K |
| Corton Capital Inc. | 0.32% | Add +98.3% | 25,760 | $603K |
| Sei Investments Co. | 0.00% | New | 24,048 | $562K |
| Wells Fargo & Company | 0.00% | Add +76.7% | 23,567 | $551K |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | Reduce -43.5% | 22,537 | $527K |
| Cetera Investment Advisers | 0.00% | New | 20,677 | $484K |
| Point72 Asset Management | 0.00% | Add +453.8% | 20,490 | $479K |
| Quantbot Technologies LP | 0.02% | New | 20,399 | $477K |
| Schonfeld Strategic Advisors LLC | 0.00% | Reduce -70.6% | 20,100 | $470K |
| Corebridge Financial, Inc. | 0.00% | — | 18,366 | $430K |
| Occudo Quantitative Strategies LP | 0.08% | Add +6.8% | 18,117 | $424K |
| Ameriprise Financial Inc. | 0.00% | Reduce -17.2% | 16,674 | $390K |
| TFC Financial Management, Inc. | 0.07% | No change | 16,471 | $385K |
| Deutsche Bank AG | 0.00% | New | 14,899 | $348K |
| HSBC Holdings PLC | 0.00% | New | 13,444 | $313K |
| Bayesian Capital Management, LP | 0.04% | New | 13,300 | $311K |
| Advisory Services Network, LLC | 0.01% | New | 13,256 | $310K |
| Harel Insurance Investments & Financial Services Ltd. | 0.01% | Reduce -42.6% | 13,152 | $308K |
| Man Group plc | 0.00% | Reduce -84.6% | 13,168 | $308K |
| Manufacturers Life Insurance Company, The | 0.00% | New | 13,123 | $307K |
| Bailard, Inc. | 0.01% | Reduce -42.3% | 12,938 | $303K |
| Oppenheimer & Co. Inc. | 0.00% | Add +4.9% | 12,800 | $299K |
"% of holder's portfolio" is AMSC's weight in each manager's 13F, not the share of American Superconductor Corp. the manager owns.