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Mariner, LLC

Position in AMSC — American Superconductor Corp /De/

CIK 1373442 Overland Park, KS

Position in AMSC

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$778,354
-$72,973 QoQ
Shares Held
18,751
-25.4% QoQ
Ownership
0.039%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#112
of 276 holders
Holding Since
Dec 2024
6 quarters on record
Voting authority Sole 0% Shared 0% None 100%

Common Shares in AMSC Over Time

Shares Held

Position Value (USD)

Position in Specialty Industrial Machinery

Industrials · as of Jun 30, 2026

Mariner, LLC holds $1,315,482,950 across 33 Specialty Industrial Machinery names. AMSC ranks #21 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in AMSC

Export CSV
6 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $778,354 18,751
2026-03-31 $851,327 25,150
2025-12-31 $591,803 20,563
2025-09-30 $785,551 13,227
2025-06-30 $451,103 12,295
2024-12-31 $202,138 8,207