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GPAT GP-ACT III ACQUISITION CORP

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CL A (common), issuer CIK 1834526

24 managers (24 13F filers) reported a position in GPAT shares at 2026-06-30, 8,844,510 shares in all. 2 filers opened a position and 30 filers sold out during the quarter.

Managers
24
13F filers
24
New
2
Added
6
Reduced
12
Sold out
30
Shares held by filers
8,844,510

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Polar Asset Management Partners Inc.1,800,000$19.6M0.36%+625,00413F-HRTimeline
AQR Arbitrage LLCin group AQR CAPITAL MANAGEMENT LLC1,400,000$15.2M0.22%-176,80313F-HRTimelineGroup
MMCAP International Inc. SPCin group MMCAP1,275,000$13.9M1.17%013F-HRTimelineGroup
Alberta Investment Management Corp1,000,000$10.9M0.06%-625,00013F-HRTimeline
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC558,486$6.03M0.1%+498,38813F-HR/ATimelineGroup
BERKLEY W R CORP497,064$5.41M0.27%-349,75913F-HRTimeline
Verition Fund Management LLC398,885$4.34M0.03%+171,29713F-HR/ATimeline
HGC Investment Management Inc.399,387$4.34M0.86%+399,38713F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK345,181$3.75M0.01%-290,28413F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\290,000$3.15M<0.01%013F-HRTimelineGroup
PICTON MAHONEY ASSET MANAGEMENT250,000$2.72M0.03%-1,125,00013F-HRTimeline
Periscope Capital Inc.150,000$1.66M0.26%-100,00013F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…149,950$1.63M<0.01%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO99,860$1.09M<0.01%-450,03813F-HRTimelineGroup
Lineage Point Capital LP64,795$716K0.15%-20513F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP50,000$544K0.01%-150,00013F-HRTimeline
Kepos Capital LPin group Kepos Capital LP42,500$470K0.64%013F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC21,362$233K<0.01%+9,96713F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC20,039$218K<0.01%+2,86713F-HRTimelineGroup
HRT FINANCIAL LP14,965$162K<0.01%new13F-HRTimeline
Clear Street Group Inc.in group Clear Street Group Inc.9,195$100K<0.01%-1,12613F-HRTimelineGroup
LONGFELLOW INVESTMENT MANAGEMENT CO LLC7,800$84.8K0.02%013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY23$250<0.01%-4113F-HRTimelineGroup
UBS Group AGin group UBS Group AG18$195<0.01%-16813F-HRTimelineGroup