AMERICAN SUPERCONDUCTOR CORP (AMSC) Institutional Ownership Changes & 13F Activity
AMERICAN SUPERCONDUCTOR CORP (AMSC). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Goldman Sachs Group Inc, T. Rowe Price Investment Management, Inc., Hrt Financial Lp, Price T Rowe Associates Inc, and Portolan Capital Management, Llc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| State Street Corp | Buy | +97,154 | +7.7% | 1,358,225 | $56.38M | Q2 2026 | Sep 22, 2026 |
| Manufacturers Life Insurance Company, The | Sell | -402 | -1.9% | 20,426 | $847.88K | Q2 2026 | Sep 09, 2026 |
| Citadel Advisors Llc | Sell | -196,185 | -90.5% | 20,528 | $852.12K | Q2 2026 | Sep 02, 2026 |
| Corient Private Wealth Llc | Buy | +5,372 | — | 5,372 | $222.99K | Q2 2026 | Aug 27, 2026 |
| California State Teachers Retirement System | Sell | -6,128 | -10.7% | 50,888 | $2.11M | Q2 2026 | Aug 24, 2026 |
| Assenagon Asset Management S.A. | Sell | -12,455 | -66.7% | 6,224 | $258.36K | Q2 2026 | Aug 21, 2026 |
| Mercer Global Advisors Inc | Buy | +5,550 | — | 5,550 | $230.38K | Q2 2026 | Aug 19, 2026 |
| Goldman Sachs Group Inc | Buy | +584,543 | +82.4% | 1,294,047 | $53.72M | Q2 2026 | Aug 14, 2026 |
| T. Rowe Price Investment Management, Inc. | Buy | +306,182 | — | 306,182 | $12.71M | Q2 2026 | Aug 14, 2026 |
| Hrt Financial Lp | Buy | +298,420 | — | 298,420 | $12.39M | Q2 2026 | Aug 14, 2026 |
| Price T Rowe Associates Inc | Buy | +285,255 | +486.7% | 343,867 | $14.27M | Q2 2026 | Aug 14, 2026 |
| Portolan Capital Management, Llc | Sell | -266,322 | -90.1% | 29,314 | $1.22M | Q2 2026 | Aug 14, 2026 |
| Legal & General Group Plc | Buy | +226,732 | +42.8% | 756,863 | $31.42M | Q2 2026 | Aug 14, 2026 |
| D. E. Shaw & Co., Inc. | Sell | -200,729 | -35.4% | 366,845 | $15.23M | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +180,660 | — | 180,660 | $7.50M | Q2 2026 | Aug 14, 2026 |
| Susquehanna International Group, Llp | Buy | +173,421 | +280.6% | 235,235 | $9.76M | Q2 2026 | Aug 14, 2026 |
| Jane Street Group, Llc | Buy | +170,319 | — | 170,319 | $7.07M | Q2 2026 | Aug 14, 2026 |
| Awm Investment Company, Inc. | Buy | +150,000 | +18.7% | 951,604 | $39.50M | Q2 2026 | Aug 14, 2026 |
| Sei Investments Co | Sell | -139,221 | -62.0% | 85,215 | $3.54M | Q2 2026 | Aug 14, 2026 |
| Oberweis Asset Management Inc/ | Buy | +137,600 | +16.2% | 987,500 | $40.99M | Q2 2026 | Aug 14, 2026 |
| Ameriprise Financial Inc | Buy | +111,856 | — | 111,856 | $4.64M | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Sell | -103,235 | -49.3% | 106,216 | $4.41M | Q2 2026 | Aug 14, 2026 |
| Silvercrest Asset Management Group Llc | Buy | +100,026 | — | 100,026 | $4.15M | Q2 2026 | Aug 14, 2026 |
| Wellington Management Group Llp | Buy | +85,244 | — | 85,244 | $3.54M | Q2 2026 | Aug 14, 2026 |
| Holocene Advisors, Lp | Buy | +83,588 | +689.2% | 95,716 | $3.97M | Q2 2026 | Aug 14, 2026 |
| Qube Research & Technologies Ltd | Sell | -78,840 | -23.9% | 250,573 | $10.40M | Q2 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Sell | -78,676 | -46.5% | 90,340 | $3.75M | Q2 2026 | Aug 14, 2026 |
| Balyasny Asset Management L.P. | Sell | -75,297 | -52.2% | 68,847 | $2.86M | Q2 2026 | Aug 14, 2026 |
| Defiance Etfs, Llc | Buy | +57,168 | +135.4% | 99,395 | $3.97M | Q2 2026 | Aug 14, 2026 |
| Polymer Capital Management (Us) Llc | Buy | +34,521 | — | 34,521 | $1.43M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about AMSC activity
Which institutional owners are buying AMSC?
Institutional owners buying AMSC include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in AMSC activity?
"Buy" means an investor increased their reported position in AMSC compared to the prior reporting period. This reflects growing exposure to AMERICAN SUPERCONDUCTOR CORP (AMSC) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in AMSC increasing?
Institutional interest in AMSC can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related AMSC Institutional Insights
- AMSC Overview
- AMSC 13F Institutional Holders
- AMSC Superinvestors
- Industrials Sector Institutional Ownership
- Industrials Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Industrials Stocks By Institutional Investors
- Most Sold Industrials Stocks By Institutional Investors
- AMSC Insider Trading & SEC Form 4 Activity
- AMSC Articles
- Top Institutional Investor Stock Rankings