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American Superconductor AMSC · USD

Industrials · US listing · 🇺🇸 United States

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25.33

+8.29%

Close of 9 Nov 2026, in USD

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Reference data, closing prices and charts across 45,000 companies, plus crypto, commodities and currencies.

Largest shareholders

As filed, so dates differ, and a group and its funds can both appear.

HolderSharesStakeChangeFiled
BLACKROCK, INC.4m8.37%+232.2k31 Mar 2026
VANGUARD CAPITAL MANAGEMENT LLC2m4.28%+2m31 Mar 2026
VANGUARD PORTFOLIO MANAGEMENT LLC1.7m3.60%+1.7m31 Mar 2026
BAILLIE GIFFORD & CO1.4m3.04%−59.4k31 Mar 2026
STATE STREET CORP1.3m2.65%+69k31 Mar 2026
GEODE CAPITAL MANAGEMENT, LLC1.2m2.46%+78.4k31 Mar 2026
BARROW HANLEY MEWHINNEY & STRAUSS LLC1.1m2.39%+1.1m31 Mar 2026
NUVEEN, LLC1m2.14%+60k31 Mar 2026
OBERWEIS ASSET MANAGEMENT INC/849.9k1.79%+14k31 Mar 2026
AWM INVESTMENT COMPANY, INC.801.6k1.68%+47.4k31 Mar 2026
FIRST TRUST ADVISORS LP778.3k1.63%+95.3k31 Mar 2026
EMERALD ADVISERS, LLC757.4k1.59%−16431 Mar 2026
GOLDMAN SACHS GROUP INC709.5k1.49%−72.8k31 Mar 2026
DIMENSIONAL FUND ADVISORS LP658.3k1.38%+118k31 Mar 2026
MORGAN STANLEY633.8k1.33%−71.6k31 Mar 2026

Insider trades

Purchases and sales by directors and officers, as filed with the regulator

DateWhoTypeSharesPriceValue
24 Feb 2026 ↗OLIVER DAVID R JRDirectorSale20034.10$6,820

Short interest

Shares sold short, 15 Oct 2026. US exchange data.

4.1m

+4.9% on the period before. 4.9 days to cover.

Short volume

Share of the day's trading sold short, 4 Nov 2026

60.0%

Last 60 trading days.

Failed deliveries

Shares not delivered on settlement, from the SEC

  • 21 Sept 2026339 shares
  • 10 Sept 2026407 shares
  • 8 Sept 2026159 shares
  • 24 Aug 2026719 shares
  • 21 Aug 202679 shares

Sources and methodology

Data on this tab
Our data supplier
Chart on the Overview
TradingView

Nothing here is investment advice. Prices can be delayed or wrong, so check with the exchange before relying on them. Data for this page. How we cover markets.