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American Superconductor AMSC

US equityMarket cap rank #2993
$29.98 −$0.03 (-0.10%)
Pre-market · Oct 6, 4:10 am ET · After hours $29.75 -0.77%
Open$30.06
Prev close$30.01
Day range$29.24 – $30.30
Volume487.7K
Market cap$1.45B
P/E (TTM)9.7
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Short interest8.11% of floatDays to cover 6.0 · as of 15 Sep 2026
Short-sale volume share22.9%5-day average of daily volume

Short-sale volume as % of daily volume

14%20%26%31%Sep '26Sep '26Oct '26

Reported short interest has risen from 6.94% to 8.11% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 3,929,693 8.1% 6.0
31 Aug 2026 3,656,216 7.5% 5.8
14 Aug 2026 3,478,380 7.2% 4.8
31 Jul 2026 3,532,626 7.3% 4.2
15 Jul 2026 3,403,538 7.0% 5.1
30 Jun 2026 3,364,466 6.9% 3.3

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