AA
QUMS

AQR Arbitrage’s Quantumsphere Acquisition Corp QUMS Stock Holding History

AQR Arbitrage’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
Q2 		$3.19M Buy
312,523
+4,229
+1% +$43K 0.05% 305
2026
Q1 		$3.12M Sell
308,294
-14,366
-4% -$145K 0.05% 288
2025
Q4 		$3.23M Buy
+322,660
New +$3.22M 0.07% 250

Other funds holding QUMS

WRBC
W.R. Berkley Corp Greenwich, Connecticut $2.18B AUM 13.58% 1-Year Est. Return
MSU
Mizuho Securities USA New York $6.2B AUM 35.46% 1-Year Est. Return
WAM
Wolverine Asset Management Chicago, Illinois $11.4B AUM 5.65% 1-Year Est. Return
KIM
Karpus Investment Management Pittsford, New York $3.48B AUM 10.49% 1-Year Est. Return
RCM
Rivernorth Capital Management West Palm Beach, Florida $2.1B AUM 2.15% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
SCM
Shaolin Capital Management Miami, Florida $2.1B AUM 64.05% 1-Year Est. Return
GCL
Glazer Capital LLC New York $4.07B AUM 78.71% 1-Year Est. Return
LA
Linden Advisors New York $19.3B AUM 1.47% 1-Year Est. Return
PAMP
Polar Asset Management Partners Toronto, Ontario, Canada $6.07B AUM 34.81% 1-Year Est. Return

AQR Arbitrage's QUMS Position: Q2 2026 in Review

AQR Arbitrage increased its Quantumsphere Acquisition Corp (QUMS) stake by 1.4% in Q2 2026, buying an estimated $43K and bringing the position to 312,523 shares worth $3.19M. The position accounts for 0.05% of the portfolio, ranked #305.

AQR Arbitrage first reported a position in QUMS in Q4 2025 and has held it in 3 quarters since. The position peaked at $3.23M in Q4 2025. 27 funds tracked by Wall St. Rank hold QUMS as of Q2 2026.

  • AQR Arbitrage held 312,523 shares of Quantumsphere Acquisition Corp worth $3.19M as of Q2 2026.
  • AQR Arbitrage bought 4,229 Quantumsphere Acquisition Corp shares in Q2 2026, an estimated $43K.
  • Quantumsphere Acquisition Corp made up 0.05% of AQR Arbitrage's portfolio in Q2 2026, its #305 holding.
  • AQR Arbitrage first reported a position in Quantumsphere Acquisition Corp in Q4 2025 and has held it in 3 quarters since.
  • AQR Arbitrage's Quantumsphere Acquisition Corp position peaked at $3.23M in Q4 2025.
  • 27 funds tracked by Wall St. Rank held Quantumsphere Acquisition Corp as of Q2 2026.

Based on AQR Arbitrage's 13F filing for Q2 2026, filed 14 Aug 2026.