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QUMS

Quantumsphere Acquisition Corp (QUMS, QUMSR, QUMSU

NASDAQ · Financial Services · Shell Companies · US

$10.33
+0.10%
Ask drillr
Institutional positioning

13F filings over the trailing two quarters

New 6Increased 6Reduced 7Sold out 29
FilerActionSharesFiled
MIZUHO SECURITIES USA LLCIncreased731,984May 11, 2026
WOLVERINE ASSET MANAGEMENT LLCIncreased603,984May 4, 2026
BERKLEY W R CORPIncreased508,540May 15, 2026
KARPUS MANAGEMENT, INC.Reduced493,875May 14, 2026
SHAOLIN CAPITAL MANAGEMENT LLCUnchanged480,000May 15, 2026
RIVERNORTH CAPITAL MANAGEMENT, LLCNew Position424,512May 15, 2026
GLAZER CAPITAL, LLCReduced423,019May 14, 2026
D. E. SHAW & CO., INC.Unchanged409,860May 15, 2026
LINDEN ADVISORS LPUnchanged400,000May 15, 2026
POLAR ASSET MANAGEMENT PARTNERS INC.New Position400,000May 15, 2026
AQR ARBITRAGE LLCReduced308,294May 15, 2026
HGC INVESTMENT MANAGEMENT INC.Unchanged300,000May 15, 2026
TORONTO DOMINION BANKIncreased265,600May 15, 2026
WESTCHESTER CAPITAL MANAGEMENT, LLCUnchanged250,000May 15, 2026
HUDSON BAY CAPITAL MANAGEMENT LPUnchanged235,000May 13, 2026

Insider activity from SEC Form 4; institutional positioning from 13F filings