MSU
QUMSR

Mizuho Securities USA’s Quantumsphere Acquisition Corp Rights QUMSR Stock Holding History

Mizuho Securities USA’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
2025
Q4 		– Sell
-357,801
Closed -$6.14K – 765
2025
Q3 		$6.14K Buy
+357,801
New +$68K ﹤0.01% 700

Other funds holding QUMSR

HCI
Harraden Circle Investments New York $499M AUM 24.03% 1-Year Est. Return
Toronto Dominion Bank
Toronto Dominion Bank Toronto, Ontario, Ontario, Canada $69.7B AUM 40.86% 1-Year Est. Return
HCM
Highbridge Capital Management New York $3.09B AUM 31.19% 1-Year Est. Return
SCM
Shaolin Capital Management Miami, Florida $2.71B AUM 64.83% 1-Year Est. Return
GCL
Glazer Capital LLC New York $4.71B AUM 81.93% 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
CS
Clear Street New York $24.6B AUM 56.26% 1-Year Est. Return
CCC
Cable Car Capital San Francisco, California $289M AUM 26.33% 1-Year Est. Return

Mizuho Securities USA's QUMSR Position: Q4 2025 in Review

Mizuho Securities USA sold out of Quantumsphere Acquisition Corp Rights (QUMSR) in Q4 2025, closing a stake of 357,801 shares — an estimated $6.14K sold.

Mizuho Securities USA first reported a position in QUMSR in Q3 2025 and held it in 1 quarter. The position peaked at $6.14K in Q3 2025. 23 funds tracked by Wall St. Rank hold QUMSR as of Q4 2025.

  • Mizuho Securities USA reported no remaining Quantumsphere Acquisition Corp Rights position as of Q4 2025 after selling out during the quarter.
  • Mizuho Securities USA sold 357,801 Quantumsphere Acquisition Corp Rights shares in Q4 2025, an estimated $6.14K.
  • Mizuho Securities USA first reported a position in Quantumsphere Acquisition Corp Rights in Q3 2025 and held it in 1 quarter.
  • Mizuho Securities USA's Quantumsphere Acquisition Corp Rights position peaked at $6.14K in Q3 2025.
  • 23 funds tracked by Wall St. Rank held Quantumsphere Acquisition Corp Rights as of Q4 2025.

Based on Mizuho Securities USA's 13F filing for Q4 2025, filed 9 Feb 2026.