CS
QUMSR

Clear Street’s Quantumsphere Acquisition Corp Rights QUMSR Stock Holding History

Clear Street’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
Q1 		$56.1K Sell
224,380
-4,872
-2% -$1.06K ﹤0.01% 719
2025
Q4 		$48.2K Buy
+229,252
New +$59.8K ﹤0.01% 624

Other funds holding QUMSR

HCI
Harraden Circle Investments New York $499M AUM 24.03% 1-Year Est. Return
HCM
Highbridge Capital Management New York $3.09B AUM 31.19% 1-Year Est. Return
Toronto Dominion Bank
Toronto Dominion Bank Toronto, Ontario, Ontario, Canada $69.7B AUM 40.86% 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
PAMP
Polar Asset Management Partners Toronto, Ontario, Canada $5.01B AUM 35.27% 1-Year Est. Return
LA
Linden Advisors New York $17.9B AUM 1.72% 1-Year Est. Return
AA
AQR Arbitrage Greenwich, Connecticut $6.09B AUM 27.01% 1-Year Est. Return
HIM
HGC Investment Management Toronto, Ontario, Canada $451M AUM 8.78% 1-Year Est. Return
GCL
Glazer Capital LLC New York $4.71B AUM 81.93% 1-Year Est. Return

Clear Street's QUMSR Position: Q1 2026 in Review

Clear Street reduced its Quantumsphere Acquisition Corp Rights (QUMSR) stake by 2.1% in Q1 2026, selling an estimated $1.06K and leaving 224,380 shares worth $56.1K. The position accounts for ﹤0.01% of the portfolio, ranked #719.

Clear Street first reported a position in QUMSR in Q4 2025 and has held it in 2 quarters since. 24 funds tracked by Wall St. Rank hold QUMSR as of Q1 2026.

  • Clear Street held 224,380 shares of Quantumsphere Acquisition Corp Rights worth $56.1K as of Q1 2026.
  • Clear Street sold 4,872 Quantumsphere Acquisition Corp Rights shares in Q1 2026, an estimated $1.06K.
  • Quantumsphere Acquisition Corp Rights made up ﹤0.01% of Clear Street's portfolio in Q1 2026, its #719 holding.
  • Clear Street first reported a position in Quantumsphere Acquisition Corp Rights in Q4 2025 and has held it in 2 quarters since.
  • 24 funds tracked by Wall St. Rank held Quantumsphere Acquisition Corp Rights as of Q1 2026.

Based on Clear Street's 13F filing for Q1 2026, filed 15 May 2026.