Picton Mahoney Asset Management’s GP-Act III Acquisition Corp GPAT Stock Holding History

Picton Mahoney Asset 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	$2.72M	Sell	250,000 -1,125,000	-82%	-$12.2M	0.02%	470
2026 Q1	$14.9M	Sell	1,375,000 -500,000	-27%	-$5.38M	0.11%	172
2025 Q4	$20M	Hold	1,875,000	–	–	0.16%	115
2025 Q3	$19.9M	Hold	1,875,000	–	–	0.18%	104
2025 Q2	$19.8M	Hold	1,875,000	–	–	0.2%	103
2025 Q1	$19.3M	Hold	1,875,000	–	–	0.33%	57
2024 Q4	$19M	Hold	1,875,000	–	–	0.39%	60
2024 Q3	$18.9M	Buy	+1,875,000	New	+$18.8M	0.62%	37

Other funds holding GPAT

PAMP

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

AIMCA

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

MSU

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

WRBC

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

HIM

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 $344B AUM 42.99% 1-Year Est. Return

Picton Mahoney Asset Management's GPAT Position: Q2 2026 in Review

Picton Mahoney Asset Management reduced its GP-Act III Acquisition Corp (GPAT) stake by 82% in Q2 2026, selling an estimated $12.2M and leaving 250,000 shares worth $2.72M. The position accounts for 0.02% of the portfolio, ranked #470.

Picton Mahoney Asset Management first reported a position in GPAT in Q3 2024 and has held it in 8 quarters since. The position peaked at $20M in Q4 2025. 24 funds tracked by Wall St. Rank hold GPAT as of Q2 2026.

Picton Mahoney Asset Management held 250,000 shares of GP-Act III Acquisition Corp worth $2.72M as of Q2 2026.
Picton Mahoney Asset Management sold 1,125,000 GP-Act III Acquisition Corp shares in Q2 2026, an estimated $12.2M.
GP-Act III Acquisition Corp made up 0.02% of Picton Mahoney Asset Management's portfolio in Q2 2026, its #470 holding.
Picton Mahoney Asset Management first reported a position in GP-Act III Acquisition Corp in Q3 2024 and has held it in 8 quarters since.
Picton Mahoney Asset Management's GP-Act III Acquisition Corp position peaked at $20M in Q4 2025.
24 funds tracked by Wall St. Rank held GP-Act III Acquisition Corp as of Q2 2026.

Based on Picton Mahoney Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.