AA
QUMSR

AQR Arbitrage’s Quantumsphere Acquisition Corp Rights QUMSR Stock Holding History

AQR Arbitrage’s Portfolio QUMSR Stock Details QUMSR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$64.5K Buy
324,248
+3,246
+1% +$682 ﹤0.01% 566
2026
Q1 		$80.3K Sell
321,002
-1,658
-0.5% -$362 ﹤0.01% 477
2025
Q4 		$64.6K Buy
+322,660
New +$84.1K ﹤0.01% 451

Other funds holding QUMSR

HCI
Harraden Circle Investments New York $784M AUM 20.59% 1-Year Est. Return
Toronto Dominion Bank
Toronto Dominion Bank Toronto, Ontario, Ontario, Canada $86.4B AUM 59.51% 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
RCM
Rivernorth Capital Management West Palm Beach, Florida $2.1B AUM 2.15% 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
HIM
HGC Investment Management Toronto, Ontario, Canada $507M AUM 6.15% 1-Year Est. Return
HCM
Highbridge Capital Management New York $4.11B AUM 26.03% 1-Year Est. Return
CS
Clear Street New York $39.5B AUM 124.03% 1-Year Est. Return

AQR Arbitrage's QUMSR Position: Q2 2026 in Review

AQR Arbitrage increased its Quantumsphere Acquisition Corp Rights (QUMSR) stake by 1% in Q2 2026, buying an estimated $682 and bringing the position to 324,248 shares worth $64.5K. The position accounts for ﹤0.01% of the portfolio, ranked #566.

AQR Arbitrage first reported a position in QUMSR in Q4 2025 and has held it in 3 quarters since. The position peaked at $80.3K in Q1 2026. 25 funds tracked by Wall St. Rank hold QUMSR as of Q2 2026.

  • AQR Arbitrage held 324,248 shares of Quantumsphere Acquisition Corp Rights worth $64.5K as of Q2 2026.
  • AQR Arbitrage bought 3,246 Quantumsphere Acquisition Corp Rights shares in Q2 2026, an estimated $682.
  • Quantumsphere Acquisition Corp Rights made up ﹤0.01% of AQR Arbitrage's portfolio in Q2 2026, its #566 holding.
  • AQR Arbitrage first reported a position in Quantumsphere Acquisition Corp Rights in Q4 2025 and has held it in 3 quarters since.
  • AQR Arbitrage's Quantumsphere Acquisition Corp Rights position peaked at $80.3K in Q1 2026.
  • 25 funds tracked by Wall St. Rank held Quantumsphere Acquisition Corp Rights as of Q2 2026.

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