GP-ACT III ACQUISITION CORP (GPAT)
Institutional ownership reported to the SEC as of Q2 2026, across 8 quarters.
22
Reporting holders
$100.6M
Reported value
0.0%
Held as options
-27
Holder change
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Polar Asset Management Partners Inc. | $19.6M | 1,800,000 | 0.32% | 8q | +53.2%+$6.8M |
| AQR Arbitrage LLC | $15.2M | 1,400,000 | 0.22% | 8q | -11.2%-$1.9M |
| MMCAP International Inc. SPC | $13.9M | 1,275,000 | 1.17% | 8q | HELD |
| Alberta Investment Management Corp | $10.9M | 1,000,000 | 0.06% | 5q | -38.5%-$6.8M |
| Verition Fund Management LLC | $8.7M | 797,770 | 0.02% | 8q | +250.5%+$6.2M |
| MIZUHO SECURITIES USA LLC | $6.7M | 618,584 | 0.06% | 5q | +929.3%+$6.0M |
| BERKLEY W R CORP | $5.4M | 497,064 | 0.26% | 8q | -41.3%-$3.8M |
| HGC Investment Management Inc. | $4.3M | 399,387 | 0.86% | new | NEW |
| TORONTO DOMINION BANK | $3.8M | 345,181 | 0.00% | 7q | -45.7%-$3.2M |
| DEUTSCHE BANK AG\ | $3.1M | 290,000 | 0.00% | 8q | HELD |
| PICTON MAHONEY ASSET MANAGEMENT | $2.7M | 250,000 | 0.02% | 8q | -81.8%-$12.3M |
| Periscope Capital Inc. | $1.7M | 150,000 | 0.15% | 8q | -40.0%-$1.1M |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $1.6M | 149,950 | 0.00% | new | NEW |
| JPMORGAN CHASE & CO | $1.1M | 99,860 | 0.00% | 5q | -81.8%-$4.9M |
| Lineage Point Capital LP | $716.0K | 64,795 | 0.15% | 3q | HELD |
| MOORE CAPITAL MANAGEMENT, LP | $543.5K | 50,000 | 0.01% | 8q | -75.0%-$1.6M |
| GEODE CAPITAL MANAGEMENT, LLC | $232.6K | 21,362 | 0.00% | 2q | +87.5%+$108.5K |
| CITADEL ADVISORS LLC | $218.2K | 20,039 | 0.00% | 7q | +16.7%+$31.2K |
| Clear Street Group Inc. | $100.0K | 9,195 | 0.00% | 4q | -10.9%-$12.2K |
| LONGFELLOW INVESTMENT MANAGEMENT CO LLC | $84.8K | 7,800 | 0.02% | 4q | HELD |
| Kepos Capital LP | $470 | 42,500 | 0.64% | 8q | HELD |
| MORGAN STANLEY | $250 | 23 | 0.00% | 6q | -64.1% |
| UBS Group AG | $195 | 18 | 0.00% | 7q | -90.3%-$1.8K |
| HRT FINANCIAL LP | $162 | 14,965 | 0.00% | new | NEW |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-14 | 13G/A | AQR Capital Management, LLC SPACwith 4 co-filers | 8.7% |
| 2026-08-14 | 13G/A | First Trust Merger Arbitrage Fund SPACwith 3 co-filers | 0.0% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 22 | $100.6M | 9,246,028 | 2 | 5 | 11 | 0.0% |
| Q1 2026 | 49 | $284.8M | 26,275,037 | 4 | 6 | 15 | 0.0% |
| Q4 2025 | 50 | $302.6M | 28,299,586 | 0 | 9 | 9 | 0.0% |
| Q3 2025 | 50 | $274.7M | 25,915,926 | 6 | 8 | 11 | 0.0% |
| Q2 2025 | 45 | $270.6M | 25,657,092 | 11 | 11 | 8 | 0.0% |
| Q1 2025 | 37 | $246.9M | 23,962,857 | 2 | 4 | 8 | 0.0% |
| Q4 2024 | 39 | $244.6M | 24,117,838 | 6 | 5 | 13 | 0.0% |
| Q3 2024 | 34 | $222.6M | 22,092,356 | 33 | 0 | 0 | 0.0% |