Hudson Bay Capital Management
QUMSR

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

Hudson Bay 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
Q1 		$37.5K Hold
150,000
– – ﹤0.01% 1281
2025
Q4 		$31.5K Sell
150,000
-85,000
-36% -$22.2K ﹤0.01% 1118
2025
Q3 		$44.6K Buy
+235,000
New +$44.6K ﹤0.01% 1140

Other funds holding QUMSR

HCI
Harraden Circle Investments New York $499M AUM 19.71% 1-Year Est. Return
HCM
Highbridge Capital Management New York $3.09B AUM 31.21% 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 64.57% 1-Year Est. Return
RCM
Rivernorth Capital Management West Palm Beach, Florida $2B AUM 0.79% 1-Year Est. Return
PAMP
Polar Asset Management Partners Toronto, Ontario, Canada $5.01B AUM 35.02% 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 26.7% 1-Year Est. Return
HIM
HGC Investment Management Toronto, Ontario, Canada $451M AUM 8.76% 1-Year Est. Return
GCL
Glazer Capital LLC New York $4.71B AUM 81.93% 1-Year Est. Return

Hudson Bay Capital Management's QUMSR Position: Q1 2026 in Review

Hudson Bay Capital Management held its Quantumsphere Acquisition Corp Rights (QUMSR) position steady in Q1 2026 at 150,000 shares worth $37.5K. The position accounts for ﹤0.01% of the portfolio, ranked #1281.

Hudson Bay Capital Management first reported a position in QUMSR in Q3 2025 and has held it in 3 quarters since. The position peaked at $44.6K in Q3 2025. 24 funds tracked by Wall St. Rank hold QUMSR as of Q1 2026.

  • Hudson Bay Capital Management held 150,000 shares of Quantumsphere Acquisition Corp Rights worth $37.5K as of Q1 2026.
  • Hudson Bay Capital Management left its Quantumsphere Acquisition Corp Rights share count unchanged in Q1 2026.
  • Quantumsphere Acquisition Corp Rights made up ﹤0.01% of Hudson Bay Capital Management's portfolio in Q1 2026, its #1281 holding.
  • Hudson Bay Capital Management first reported a position in Quantumsphere Acquisition Corp Rights in Q3 2025 and has held it in 3 quarters since.
  • Hudson Bay Capital Management's Quantumsphere Acquisition Corp Rights position peaked at $44.6K in Q3 2025.
  • 24 funds tracked by Wall St. Rank held Quantumsphere Acquisition Corp Rights as of Q1 2026.

Based on Hudson Bay Capital Management's 13F filing for Q1 2026, filed 13 May 2026.