8 institutions reported holding $2.9M of AMERICAN SUPERCONDUCTOR CORP (AMSC) in SEC 13F filings for 2026-06-30. Largest institutional holders: Hennion & Walsh Asset Management, Inc. ($1.9M), Central Pacific Bank - Trust Division ($675,202), Assenagon Asset Management S.A. ($258,358), GAMMA Investing LLC ($48,857), Versant Capital Management, Inc ($27,604). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Hennion & Walsh Asset Management, Inc. | $1.9M | 46,020 | Added |
| 2 | Central Pacific Bank - Trust Division | $675,202 | 16,266 | Added |
| 3 | Assenagon Asset Management S.A. | $258,358 | 6,224 | Trimmed |
| 4 | GAMMA Investing LLC | $48,857 | 1,177 | Added |
| 5 | Versant Capital Management, Inc | $27,604 | 665 | Hold |
| 6 | CoreCap Advisors, LLC | $9,132 | 220 | Hold |
| 7 | MassMutual Private Wealth & Trust, FSB | $872 | 21 | Added |
| 8 | City Center Advisors, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30