American SuperconductorAMSC
13F holders, Q4 2025 (December 31)240holders −32
35new positions
70sold out
8famous investors
$28.82avg. 13F price*
At the end of Q4 2025, 240 institutions reported holding American Superconductor Corp. (AMSC) in their 13F filings, down 32 from Q3 2025. 35 opened new positions and 70 sold out. The largest holders were BlackRock, Inc. ($107.9M), Vanguard Group Inc. ($101.5M) and Baillie Gifford & Co. ($43.4M). 8 famous investors held it, including Gavin Baker (0.6% of Atreides Management's portfolio), Paul Tudor Jones (0.0% 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
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 35 | $26.6M |
| Exits | 70 | $192.1M |
All 13F filers, Q3 2025 → Q4 2025: 6,214,767 shares bought and 6,248,593 shares sold, net −33,826 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 240 holders
| BlackRock, Inc. | 0.00% | Add +3.3% | 3,750,403 | $107.9M |
| Vanguard Group Inc. | 0.00% | Add +19.6% | 3,526,632 | $101.5M |
| Baillie Gifford & Co. | 0.04% | Add +5.6% | 1,506,841 | $43.4M |
| State Street Corp. | 0.00% | Add +5.0% | 1,192,093 | $34.3M |
| Geode Capital Management, LLC | 0.00% | Add +1.9% | 1,090,710 | $31.4M |
| Atreides Management | 0.64% | Add +35.4% | 1,044,193 | $30.1M |
| Nuveen, LLC | 0.01% | Add +16.3% | 960,968 | $27.7M |
| Oberweis Asset Management Inc./ | 0.88% | Add +25.6% | 835,900 | $24.1M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -33.4% | 782,287 | $22.5M |
| Emerald Advisers, LLC | 0.67% | Add +45.4% | 757,568 | $21.8M |
| AWM Investment Company, Inc. | 2.10% | Add +1.2% | 754,220 | $21.7M |
| UBS Group AG | 0.00% | Add +284.3% | 744,563 | $21.4M |
| Morgan Stanley | 0.00% | Add +110.1% | 705,442 | $20.3M |
| Arrowstreet Capital, Limited Partnership | 0.01% | Reduce -10.2% | 683,202 | $19.7M |
| First Trust Advisors LP | 0.01% | Add +49.0% | 682,967 | $19.7M |
| Telemark Asset Management, LLC | 1.78% | Reduce -10.2% | 619,900 | $17.8M |
| Qube Research & Technologies Ltd | 0.02% | Add +132.5% | 599,006 | $17.2M |
| Dimensional Fund Advisors LP | 0.00% | Add +14.6% | 540,253 | $15.5M |
| Driehaus Capital Management LLC | 0.10% | Reduce -59.0% | 499,984 | $14.4M |
| Algert Global LLC | 0.21% | Add +60.1% | 460,771 | $13.3M |
| Nomura Asset Management International Inc. | 0.02% | — | 459,786 | $13.2M |
| D. E. Shaw & Co. | 0.01% | Reduce -41.1% | 443,148 | $12.8M |
| Emerald Mutual Fund Advisers Trust | 0.61% | Add +41.4% | 435,246 | $12.5M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -0.2% | 387,507 | $11.2M |
| Royce & Associates LP | 0.11% | Add +8.3% | 387,069 | $11.1M |
| Invesco Ltd. | 0.00% | Add +35.3% | 386,152 | $11.1M |
| Northern Trust Corp. | 0.00% | Reduce -8.0% | 360,806 | $10.4M |
| Citadel Advisors | 0.01% | Add +2178.6% | 337,713 | $9.7M |
| Two Sigma Investments, LP | 0.01% | Add +164.4% | 321,571 | $9.3M |
| Legal & General Group Plc | 0.00% | Add +7.1% | 278,026 | $8.0M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -30.6% | 274,844 | $7.9M |
| Panagora Asset Management Inc. | 0.03% | Add +25.8% | 254,785 | $7.3M |
| Tudor Investment Corporation | 0.04% | Add +43.8% | 251,642 | $7.2M |
| Jane Street Group, LLC | 0.01% | Add +78.4% | 242,767 | $7.0M |
| Allspring Global Investments Holdings, LLC | 0.01% | Add +2.6% | 204,678 | $6.5M |
| Essex Investment Management Co. LLC | 0.94% | Reduce -12.4% | 215,154 | $6.2M |
| Stephens Investment Management Group LLC | 0.07% | Add +156.6% | 174,228 | $5.0M |
| Bank of America Corp. | 0.00% | Reduce -16.4% | 165,568 | $4.8M |
| Balyasny Asset Management L.P. | 0.01% | New | 152,795 | $4.4M |
| AQR Capital Management | 0.00% | Reduce -13.5% | 145,965 | $4.2M |
| Palisades Investment Partners, LLC | 1.57% | Add +2.2% | 144,209 | $4.2M |
| Raymond James Financial Inc. | 0.00% | Reduce -15.2% | 141,811 | $4.1M |
| Renaissance Technologies | 0.01% | Reduce -56.8% | 139,989 | $4.0M |
| Bank of New York Mellon Corp | 0.00% | Add +2.6% | 137,042 | $3.9M |
| Baird Financial Group, Inc. | 0.01% | Add +67.0% | 134,899 | $3.9M |
| Axiom Investors LLC | 0.03% | Reduce -49.3% | 134,076 | $3.9M |
| Wells Fargo & Company | 0.00% | Reduce -38.5% | 133,918 | $3.9M |
| FMR LLC | 0.00% | Add +23.4% | 124,406 | $3.6M |
| JPMorgan Chase & Co. | 0.00% | Add +7.2% | 123,103 | $3.5M |
| Y-Intercept (Hong Kong) Ltd | 0.08% | New | 120,251 | $3.5M |
| ArrowMark Colorado Holdings LLC | 0.07% | No change | 110,432 | $3.2M |
| Swiss National Bank | 0.00% | Add +5.3% | 89,100 | $2.6M |
| BNP Paribas Financial Markets | 0.00% | Add +30.9% | 82,502 | $2.4M |
| Capital Fund Management S.A. | 0.02% | Add +20.8% | 79,160 | $2.3M |
| Sei Investments Co. | 0.00% | Add +19.1% | 78,810 | $2.3M |
| Millennium Management | 0.00% | Reduce -36.3% | 78,088 | $2.2M |
| Point72 Asset Management | 0.00% | Add +133.1% | 77,457 | $2.2M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -6.6% | 77,207 | $2.2M |
| Victory Capital Management Inc. | 0.00% | Add +85.8% | 76,882 | $2.2M |
| Barclays PLC | 0.00% | Add +18.0% | 73,805 | $2.1M |
| Lumbard & Kellner, LLC | 0.72% | Reduce -1.8% | 71,161 | $2.0M |
| SG Americas Securities, LLC | 0.00% | Add +123.1% | 70,992 | $2.0M |
| ExodusPoint Capital Management, LP | 0.02% | New | 70,751 | $2.0M |
| New York State Common Retirement Fund | 0.00% | Add +2.5% | 70,400 | $2.0M |
| HRT Financial LP | 0.01% | Add +1025.7% | 69,724 | $2.0M |
| Dynamic Technology Lab Private Ltd | 0.45% | New | 69,225 | $2.0M |
| Susquehanna International Group, LLP | 0.00% | Reduce -48.4% | 65,625 | $1.9M |
| Kennedy Capital Management LLC | 0.04% | Add +0.0% | 64,625 | $1.9M |
| Walleye Capital LLC | 0.01% | New | 64,520 | $1.9M |
| Campbell Newman Asset Management Inc. | 0.13% | Reduce -3.4% | 63,148 | $1.8M |
| Alps Advisors Inc. | 0.01% | Reduce -6.2% | 62,242 | $1.8M |
| Aquatic Capital Management LLC | 0.05% | Add +13.9% | 61,352 | $1.8M |
| Campbell & CO Investment Adviser LLC | 0.08% | New | 59,952 | $1.7M |
| Ameriprise Financial Inc. | 0.00% | Add +209.9% | 58,956 | $1.7M |
| Principal Financial Group Inc. | 0.00% | Add +49.6% | 58,950 | $1.7M |
| Rhumbline Advisers | 0.00% | Reduce -18.1% | 57,693 | $1.7M |
| Los Angeles Capital Management LLC | 0.01% | No change | 25,637 | $1.5M |
| Twinbeech Capital LP | 0.11% | New | 52,221 | $1.5M |
| California State Teachers Retirement System | 0.00% | Add +0.5% | 50,911 | $1.5M |
| Rice Hall James & Associates, LLC | 0.07% | Reduce -22.4% | 47,114 | $1.4M |
| Two Sigma Advisers, LP | 0.00% | Add +227.1% | 47,100 | $1.4M |
| Janney Montgomery Scott LLC | 0.00% | Add +1.4% | 46,381 | $1.3M |
| Amundi | 0.00% | Add +11.0% | 46,316 | $1.3M |
| Freestone Grove Partners LP | 0.01% | New | 46,128 | $1.3M |
| Royal Bank of Canada | 0.00% | Add +4.1% | 45,133 | $1.3M |
| Legato Capital Management LLC | 0.10% | Reduce -30.9% | 40,687 | $1.2M |
| Mackenzie Financial Corp. | 0.00% | Add +17.4% | 40,245 | $1.2M |
| LPL Financial LLC | 0.00% | Reduce -17.7% | 40,074 | $1.2M |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Add +12.9% | 39,600 | $1.1M |
| Alliancebernstein L.P. | 0.00% | No change | 39,320 | $1.1M |
| Deutsche Bank AG | 0.00% | Add +7.2% | 38,723 | $1.1M |
| Merit Financial Group, LLC | 0.01% | Add +17.0% | 37,281 | $1.1M |
| Verition Fund Management LLC | 0.01% | Reduce -47.7% | 37,200 | $1.1M |
| Engineers Gate Manager LP | 0.01% | Reduce -62.5% | 36,587 | $1.1M |
| Kornitzer Capital Management Inc. | 0.02% | Add +9.6% | 36,154 | $1.0M |
| Man Group plc | 0.00% | Add +124.0% | 36,094 | $1.0M |
| Natixis | 0.00% | New | 35,086 | $1.0M |
| Franklin Resources Inc. | 0.00% | Add +13085.0% | 35,072 | $1.0M |
| Russell Investments Group, Ltd. | 0.00% | Add +56.6% | 35,065 | $1.0M |
| Headlands Technologies LLC | 0.08% | New | 34,308 | $987K |
"% of holder's portfolio" is AMSC's weight in each manager's 13F, not the share of American Superconductor Corp. the manager owns.