PAMP
QUMSU

Polar Asset Management Partners’s Quantumsphere Acquisition Corp Units QUMSU Stock Holding History

Polar Asset Management Partners’s Portfolio QUMSU Stock Details QUMSU Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-400,000
Closed -$4.07M – 890
2025
Q4 		$4.07M Hold
400,000
– – 0.05% 270
2025
Q3 		$4.05M Buy
+400,000
New +$4.02M 0.05% 284

Other funds holding QUMSU

WCMNY
Westchester Capital Management (New York) Valhalla, New York $2.21B AUM 26.02% 1-Year Est. Return
GCIA
Gabelli & Co Investment Advisers Rye, New York $674M AUM 64.52% 1-Year Est. Return
GF
Gabelli Funds Rye, New York $14.8B AUM 32.24% 1-Year Est. Return
HF
HRT Financial New York $40.1B AUM 58.22% 1-Year Est. Return
CS
Clear Street New York $24.6B AUM 56.26% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
GCL
Glazer Capital LLC New York $4.71B AUM 81.93% 1-Year Est. Return

Polar Asset Management Partners's QUMSU Position: Q1 2026 in Review

Polar Asset Management Partners sold out of Quantumsphere Acquisition Corp Units (QUMSU) in Q1 2026, closing a stake of 400,000 shares — an estimated $4.07M sold.

Polar Asset Management Partners first reported a position in QUMSU in Q3 2025 and held it in 2 quarters. The position peaked at $4.07M in Q4 2025. 8 funds tracked by Wall St. Rank hold QUMSU as of Q1 2026.

  • Polar Asset Management Partners reported no remaining Quantumsphere Acquisition Corp Units position as of Q1 2026 after selling out during the quarter.
  • Polar Asset Management Partners sold 400,000 Quantumsphere Acquisition Corp Units shares in Q1 2026, an estimated $4.07M.
  • Polar Asset Management Partners first reported a position in Quantumsphere Acquisition Corp Units in Q3 2025 and held it in 2 quarters.
  • Polar Asset Management Partners's Quantumsphere Acquisition Corp Units position peaked at $4.07M in Q4 2025.
  • 8 funds tracked by Wall St. Rank held Quantumsphere Acquisition Corp Units as of Q1 2026.

Based on Polar Asset Management Partners's 13F filing for Q1 2026, filed 15 May 2026.