HCM
QUMSR

Highbridge Capital Management’s Quantumsphere Acquisition Corp Rights QUMSR Stock Holding History

Highbridge Capital Management’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 		$52.2K Sell
307,316
-383,088
-55% -$80.5K ﹤0.01% 344
2026
Q1 		$173K Buy
690,404
+6,367
+0.9% +$1.39K 0.01% 197
2025
Q4 		$144K Sell
684,037
-15,963
-2% -$4.16K ﹤0.01% 172
2025
Q3 		$133K Buy
+700,000
New +$133K 0.01% 170

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
AA
AQR Arbitrage Greenwich, Connecticut $7.02B AUM 31.58% 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
CS
Clear Street New York $39.5B AUM 124.03% 1-Year Est. Return

Highbridge Capital Management's QUMSR Position: Q2 2026 in Review

Highbridge Capital Management reduced its Quantumsphere Acquisition Corp Rights (QUMSR) stake by 55% in Q2 2026, selling an estimated $80.5K and leaving 307,316 shares worth $52.2K. The position accounts for ﹤0.01% of the portfolio, ranked #344.

Highbridge Capital Management first reported a position in QUMSR in Q3 2025 and has held it in 4 quarters since. The position peaked at $173K in Q1 2026. 25 funds tracked by Wall St. Rank hold QUMSR as of Q2 2026.

  • Highbridge Capital Management held 307,316 shares of Quantumsphere Acquisition Corp Rights worth $52.2K as of Q2 2026.
  • Highbridge Capital Management sold 383,088 Quantumsphere Acquisition Corp Rights shares in Q2 2026, an estimated $80.5K.
  • Quantumsphere Acquisition Corp Rights made up ﹤0.01% of Highbridge Capital Management's portfolio in Q2 2026, its #344 holding.
  • Highbridge Capital Management first reported a position in Quantumsphere Acquisition Corp Rights in Q3 2025 and has held it in 4 quarters since.
  • Highbridge Capital Management's Quantumsphere Acquisition Corp Rights position peaked at $173K in Q1 2026.
  • 25 funds tracked by Wall St. Rank held Quantumsphere Acquisition Corp Rights as of Q2 2026.

Based on Highbridge Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.