HCM
QUMS

Highbridge Capital Management’s Quantumsphere Acquisition Corp QUMS Stock Holding History

Highbridge Capital Management’s Portfolio QUMS Stock Details QUMS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.23M Buy
+121,078
New +$1.22M 0.04% 139
2025
Q4 		– Sell
-600,000
Closed -$5.98M – 351
2025
Q3 		$5.98M Buy
+600,000
New +$5.98M 0.26% 72

Other funds holding QUMS

MSU
Mizuho Securities USA New York $6.2B AUM 35.46% 1-Year Est. Return
WAM
Wolverine Asset Management Chicago, Illinois $10.4B AUM 4.78% 1-Year Est. Return
WRBC
W.R. Berkley Corp Greenwich, Connecticut $1.86B AUM 14.44% 1-Year Est. Return
KIM
Karpus Investment Management Pittsford, New York $3.21B AUM 6.83% 1-Year Est. Return
SCM
Shaolin Capital Management Miami, Florida $2.71B AUM 64.83% 1-Year Est. Return
RCM
Rivernorth Capital Management West Palm Beach, Florida $2B AUM 0.66% 1-Year Est. Return
GCL
Glazer Capital LLC New York $4.71B AUM 81.93% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
LA
Linden Advisors New York $17.9B AUM 1.72% 1-Year Est. Return
PAMP
Polar Asset Management Partners Toronto, Ontario, Canada $5.01B AUM 35.27% 1-Year Est. Return

Highbridge Capital Management's QUMS Position: Q1 2026 in Review

Highbridge Capital Management opened a new position in Quantumsphere Acquisition Corp (QUMS) in Q1 2026: 121,078 shares worth $1.23M. The stake represents 0.04% of the portfolio and ranks #139 among its holdings. This is a return to the name: Highbridge Capital Management previously reported a position in QUMS as recently as Q3 2025.

Highbridge Capital Management first reported a position in QUMS in Q3 2025 and has held it in 2 quarters since. The position peaked at $5.98M in Q3 2025. 29 funds tracked by Wall St. Rank hold QUMS as of Q1 2026.

  • Highbridge Capital Management held 121,078 shares of Quantumsphere Acquisition Corp worth $1.23M as of Q1 2026.
  • Quantumsphere Acquisition Corp was a new Highbridge Capital Management position in Q1 2026.
  • Quantumsphere Acquisition Corp made up 0.04% of Highbridge Capital Management's portfolio in Q1 2026, its #139 holding.
  • Highbridge Capital Management first reported a position in Quantumsphere Acquisition Corp in Q3 2025 and has held it in 2 quarters since.
  • Highbridge Capital Management's Quantumsphere Acquisition Corp position peaked at $5.98M in Q3 2025.
  • 29 funds tracked by Wall St. Rank held Quantumsphere Acquisition Corp as of Q1 2026.

Based on Highbridge Capital Management's 13F filing for Q1 2026, filed 15 May 2026.