| 0.21% |
| 4 | UBS Group AG | 1.4M | $59.3M | +138.3% | 2.949% | 0.01% |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.4M | $58.9M | -17.1% | 2.928% | 0.00% |
| 6 | STATE STREET CORP | 1.4M | $56.4M | +7.7% | 2.803% | 0.00% |
| 7 | GOLDMAN SACHS GROUP INC | 1.3M | $53.7M | +82.4% | 2.670% | 0.00% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 1.2M | $51.6M | +6.3% | 2.565% | 0.00% |
| 9 | FIRST TRUST ADVISORS LP | 1.2M | $48.5M | +50.1% | 2.411% | 0.03% |
| 10 | OBERWEIS ASSET MANAGEMENT INC/ | 988K | $41.0M | +16.2% | 2.038% | 0.85% |
| 11 | JANE STREET GROUP, LLC | 964K | $40.0M | +419.5% | 1.990% | 0.00% |
| 12 | AWM Investment Company, Inc. | 952K | $39.5M | +18.7% | 1.964% | 3.43% |
| 13 | BAILLIE GIFFORD & CO | 933K | $38.7M | -35.5% | 1.926% | 0.04% |
| 14 | EMERALD ADVISERS, LLC | 844K | $35.0M | +11.4% | 1.742% | 0.82% |
| 15 | Legal & General Group Plc | 757K | $31.4M | +42.8% | 1.562% | 0.01% |
| 16 | DIMENSIONAL FUND ADVISORS LP | 646K | $26.8M | -1.9% | 1.333% | 0.00% |
| 17 | MORGAN STANLEY | 636K | $26.4M | +0.3% | 1.312% | 0.00% |
| 18 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 629K | $26.1M | +18.1% | 1.297% | 0.00% |
| 19 | Nuveen, LLC | 628K | $26.1M | -38.5% | 1.297% | 0.01% |
| 20 | Telemark Asset Management, LLC | 600K | $24.9M | 0.0% | 1.238% | 1.80% |
| 21 | ROYCE & ASSOCIATES LP | 556K | $23.1M | +2.4% | 1.147% | 0.19% |
| 22 | EMERALD MUTUAL FUND ADVISERS TRUST | 539K | $22.4M | +22.8% | 1.112% | 0.79% |
| 23 | NORTHERN TRUST CORP | 434K | $18.0M | +10.3% | 0.895% | 0.00% |
| 24 | CITADEL ADVISORS LLC | 430K | $17.8M | -8.9% | 0.886% | 0.00% |
| 25 | Ranger Investment Management, L.P. | 405K | $16.8M | — | 0.836% | 1.06% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in AMSC — a direct measure of their conviction.
| 70.90% |
| 53.26 pp |
| $522M |
| 55% |
| Q4 2024 | 187 | +12% | 124.16% | 75.83 pp | $1.17B | 53% |
| Q3 2024 | 167 | — | 199.99% | — | $2.46B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
60 institutions opened new positions in AMSC during Q2 2026, while 31 fully exited. 170 added to existing positions and 41 trimmed.
AMSC institutional ownership rose by 4.27 percentage points quarter-over-quarter, with a net change of +33 holders.
The top 10 institutions account for 46.3% of all reported 13F value in AMSC, and the top 25 account for 73.8%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
American Superconductor Corporation (AMSC) Institutional Ownership