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 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

KIM

Karpus Investment Management Pittsford, New York $3.21B AUM 6.83% 1-Year Est. Return

FTCM

First Trust Capital Management Chicago, Illinois $1.9B AUM 58.28% 1-Year Est. Return

AIMCA

Alberta Investment Management Corp (AIMCo) Edmonton, Alberta, Canada $17.9B AUM 27.57% 1-Year Est. Return

AQR Arbitrage Greenwich, Connecticut $6.09B AUM 26.7% 1-Year Est. Return

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

PMAM

Picton Mahoney Asset Management Toronto, Ontario, Canada $13.5B AUM 50.39% 1-Year Est. Return

MMCAP International Grand Cayman, Cayman Islands $1.16B AUM 76.63% 1-Year Est. Return

LMR Partners London, United Kingdom $45.4B AUM 60.47% 1-Year Est. Return

PAMP

Polar Asset Management Partners Toronto, Ontario, Canada $5.01B AUM 35.02% 1-Year Est. Return

Wealthspring Capital West Harrison, New York $448M AUM 8.34% 1-Year Est. Return

Heights Capital Management's GPAT Position: Q1 2026 in Review

Heights Capital Management reduced its GP-Act III Acquisition Corp (GPAT) stake by 6.6% in Q1 2026, selling an estimated $295K and leaving 388,719 shares worth $4.21M. The position accounts for 1.17% of the portfolio, ranked #19.

Heights Capital Management first reported a position in GPAT in Q3 2024 and has held it in 7 quarters since. The position peaked at $4.85M in Q2 2025. 51 funds tracked by Wall St. Rank hold GPAT as of Q1 2026.

Heights Capital Management held 388,719 shares of GP-Act III Acquisition Corp worth $4.21M as of Q1 2026.
Heights Capital Management sold 27,377 GP-Act III Acquisition Corp shares in Q1 2026, an estimated $295K.
GP-Act III Acquisition Corp made up 1.17% of Heights Capital Management's portfolio in Q1 2026, its #19 holding.
Heights Capital Management first reported a position in GP-Act III Acquisition Corp in Q3 2024 and has held it in 7 quarters since.
Heights Capital Management's GP-Act III Acquisition Corp position peaked at $4.85M in Q2 2025.
51 funds tracked by Wall St. Rank held GP-Act III Acquisition Corp as of Q1 2026.

Based on Heights Capital Management's 13F filing for Q1 2026, filed 15 May 2026.