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DataHeimdall

Financial transparency data from public SEC filings.

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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

AMSC

Superinvestors

Institutional investors holding AMSC

Consensus →
InvestorFundWeightSharesValueQuarter
Meridian / ArrowMarkMeridian Contrarian Fund0.12%135,432$4.6M2026Q1
Polen Capital ManagementPolen Capital Management0.00%23,565$678K2025Q4

Congressional Activity

Congressional data coming soon

Insider Activity

23

Total trades

$6.2M

Volume

8

Buys

15

Sells

Last trade: Jun 1, 2026

Insider Tradeslast 90 days

No insider trades in the last 90 days.

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.