Heights Capital Management’s GP-Act III Acquisition Corp GPAT Stock Holding History

Heights Capital Management’s Portfolio GPAT Stock Details GPAT Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	–	Sell	-388,719	Closed	-$4.21M	–	335
2026 Q1	$4.21M	Sell	388,719 -27,377	-7%	-$295K	1.17%	19
2025 Q4	$4.45M	Sell	416,096 -5,079	-1%	-$54.1K	1.6%	12
2025 Q3	$4.46M	Sell	421,175 -38,326	-8%	-$405K	1.27%	17
2025 Q2	$4.85M	Sell	459,501 -499	-0.1%	-$5.22K	1.29%	17
2025 Q1	$4.75M	Hold	460,000	–	–	2.23%	10
2024 Q4	$4.66M	Hold	460,000	–	–	2.31%	9
2024 Q3	$4.64M	Buy	+460,000	New	+$4.61M	3.44%	4

Other funds holding GPAT

Polar Asset Management Partners Toronto, Ontario, Canada $6.07B AUM 34.81% 1-Year Est. Return

AQR Arbitrage Greenwich, Connecticut $7.02B AUM 31.58% 1-Year Est. Return

MMCAP International Grand Cayman, Cayman Islands $1.18B AUM 50.44% 1-Year Est. Return

Alberta Investment Management Corp (AIMCo) Edmonton, Alberta, Canada $17.9B AUM 27.56% 1-Year Est. Return

Mizuho Securities USA New York $6.2B AUM 35.46% 1-Year Est. Return

W.R. Berkley Corp Greenwich, Connecticut $2.18B AUM 13.58% 1-Year Est. Return

Verition Fund Management Greenwich, Connecticut $19.7B AUM 39.39% 1-Year Est. Return

HGC Investment Management Toronto, Ontario, Canada $507M AUM 6.15% 1-Year Est. Return

Toronto Dominion Bank Toronto, Ontario, Ontario, Canada $86.4B AUM 59.51% 1-Year Est. Return

Deutsche Bank Frankfurt Am Main Ge, Germany $362B AUM 34.89% 1-Year Est. Return

Heights Capital Management's GPAT Position: Q2 2026 in Review

Heights Capital Management sold out of GP-Act III Acquisition Corp (GPAT) in Q2 2026, closing a stake of 388,719 shares — an estimated $4.21M sold.

Heights Capital Management first reported a position in GPAT in Q3 2024 and held it in 7 quarters. The position peaked at $4.85M in Q2 2025. 24 funds tracked by Wall St. Rank hold GPAT as of Q2 2026.

Heights Capital Management reported no remaining GP-Act III Acquisition Corp position as of Q2 2026 after selling out during the quarter.
Heights Capital Management sold 388,719 GP-Act III Acquisition Corp shares in Q2 2026, an estimated $4.21M.
Heights Capital Management first reported a position in GP-Act III Acquisition Corp in Q3 2024 and held it in 7 quarters.
Heights Capital Management's GP-Act III Acquisition Corp position peaked at $4.85M in Q2 2025.
24 funds tracked by Wall St. Rank held GP-Act III Acquisition Corp as of Q2 2026.

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