GP-ACT III ACQUISITION CORP GPAT
CL A · Common Stock · CUSIP G4035N103
- SectorBlank check (SPAC)
- IndustryBlank Checks
- HeadquartersNew York, NY
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $10.69.
Trends to Q4 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2024 | 38 |
| Q4 2024 | 43 |
| Q1 2025 | 41 |
| Q2 2025 | 49 |
| Q3 2025 | 52 |
| Q4 2025 | 52 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2024 | 11 | 15 |
| Q1 2025 | 7 | 13 |
| Q2 2025 | 21 | 12 |
| Q3 2025 | 15 | 14 |
| Q4 2025 | 10 | 15 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2025 | $0 | $0 | — |
| Q2 2025 | $46.5k | $0 | 0.00 |
| Q3 2025 | $39.0k | $0 | 0.00 |
| Q4 2025 | $0 | $0 | — |
Biggest buyers
| Westchester Capital Management, LLC | Added | +250.0k |
| Meteora Capital, LLC | Added | +157.7k |
| MIZUHO SECURITIES USA LLC | Added | +119.9k |
| Karpus Management, Inc. | Added | +25.1k |
| Shaolin Capital Management LLC | Added | +25.0k |
| BERKLEY W R CORP | Added | +14.3k |
| Cannon Global Investment Management, LLC | Added | +4.0k |
| Verition Fund Management LLC | Added | +1.5k |
| Radcliffe Capital Management, L.P. | Added | +327 |
| MORGAN STANLEY | Added | +23 |
Biggest sellers
| TORONTO DOMINION BANK | Reduced | -461.6k |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | Reduced | -100.0k |
| Quarry LP | Sold out | -65.0k |
| JPMORGAN CHASE & CO | Reduced | -49.7k |
| Wealthspring Capital LLC | Reduced | -13.6k |
| GLAZER CAPITAL, LLC | Reduced | -10.0k |
| UBS Group AG | Reduced | -8.9k |
| BANK OF AMERICA CORP /DE/ | Sold out | -8.0k |
| HEIGHTS CAPITAL MANAGEMENT, INC | Reduced | -5.1k |
| CITADEL ADVISORS LLC | Reduced | -3.9k |
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| GP-Act III Sponsor LLC 13G · exempt (held before listing) new · filed 2025-03-07 | 19.8% |
| Polar Asset Management Partners Inc. 13G · institution +7.0 pts · filed 2026-06-04 | 11.1% |
| AQR CAPITAL MANAGEMENT LLC 13G · institution filed 2026-08-14 | 8.7% |
| HGC Investment Management Inc. 13G · institution new · filed 2025-02-14 | 8.6% |
| METEORA CAPITAL, LLC 13G · institution new · filed 2025-08-14 | 6.7% |
| BARCLAYS PLC 13G · institution no change · filed 2025-03-28 | 5.2% |
Fell to 5% or below in the last year: First Trust Capital Management L.P. (0.0%, 2026-08-14), Karpus Management, Inc. (0.0%, 2026-06-05), PICTON MAHONEY ASSET MANAGEMENT (4.8%, 2026-04-27), BANK OF MONTREAL /CAN/ (0.0%, 2026-02-12)
Insider purchases and sales in Q4 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
None reported in Q4 2025.
Holders, Q4 2025
| Manager | Shares | Change |
|---|---|---|
| Karpus Management, Inc. 0.77% of their portfolio | 2.3m $24.9m | Added +25.1k |
| First Trust Capital Management L.P. 1.35% of their portfolio | 2.1m $22.4m | Unchanged |
| PICTON MAHONEY ASSET MANAGEMENT 0.22% of their portfolio | 1.9m $20.0m | Unchanged |
| Alberta Investment Management Corp 0.10% of their portfolio | 1.6m $17.4m | Unchanged |
| AQR Arbitrage LLC 0.35% of their portfolio | 1.6m $16.9m | Unchanged |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 1.4m $15.2m | Unchanged |
| HGC Investment Management Inc. 3.12% of their portfolio | 1.4m $14.7m | Unchanged |
| Westchester Capital Management, LLC 0.68% of their portfolio | 1.4m $14.6m | Added +250.0k |
| MMCAP International Inc. SPC 1.36% of their portfolio | 1.3m $13.6m | Unchanged |
| LMR Partners LLP 0.13% of their portfolio | 1.2m $13.1m | Unchanged |
| Polar Asset Management Partners Inc. 0.25% of their portfolio | 1.2m $12.6m | Unchanged |
| Wealthspring Capital LLC 2.57% of their portfolio | 1.0m $10.9m | Reduced -13.6k |
| WOLVERINE ASSET MANAGEMENT LLC 0.14% of their portfolio | 951.7k $10.2m | Reduced -3.1k |
| Linden Advisors LP 0.05% of their portfolio | 797.6k $8.5m | Unchanged |
| TENOR CAPITAL MANAGEMENT Co., L.P. 0.11% of their portfolio | 750.0k $8.0m | Unchanged |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 625.0k $6.7m | Unchanged |
| Radcliffe Capital Management, L.P. 0.33% of their portfolio | 573.2k $6.1m | Added +327 |
| L1 Global Manager Pty Ltd 3.97% of their portfolio | 567.6k $6.1m | First filing |
| ARISTEIA CAPITAL, L.L.C. 0.15% of their portfolio | 490.8k $5.2m | Unchanged |
| RIVERNORTH CAPITAL MANAGEMENT, LLC 0.21% of their portfolio | 420.1k $4.5m | Reduced -821 |
| HEIGHTS CAPITAL MANAGEMENT, INC 1.68% of their portfolio | 416.1k $4.5m | Reduced -5.1k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.02% of their portfolio | 412.3k $4.4m | Unchanged |
| Meteora Capital, LLC 0.37% of their portfolio | 408.7k $4.4m | Added +157.7k |
| TORONTO DOMINION BANK 0.01% of their portfolio | 400.0k $4.3m | Reduced -461.6k |
| Periscope Capital Inc. 0.71% of their portfolio | 344.0k $3.7m | Unchanged |
| MIZUHO SECURITIES USA LLC 0.06% of their portfolio | 319.9k $3.4m | Added +119.9k |
| BERKLEY W R CORP 0.19% of their portfolio | 312.3k $3.3m | Added +14.3k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio | 295.9k $3.2m | Unchanged |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 290.0k $3.1m | Unchanged |
| GLAZER CAPITAL, LLC 0.07% of their portfolio | 250.1k $2.7m | Reduced -10.0k |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 0.07% of their portfolio | 250.0k $2.7m | Reduced -100.0k |
| Jain Global LLC 0.03% of their portfolio | 250.0k $2.7m | Unchanged |
| Verition Fund Management LLC 0.01% of their portfolio | 229.1k $2.5m | Added +1.5k |
| MOORE CAPITAL MANAGEMENT, LP 0.04% of their portfolio | 200.0k $2.1m | Unchanged |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 137.7k $1.5m | Reduced -84 |
| Shaolin Capital Management LLC 0.05% of their portfolio | 125.0k $1.3m | Added +25.0k |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 80.0k $855.2k | Unchanged |
| Lineage Point Capital LP 0.26% of their portfolio | 65.0k $694.9k | First filing |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 49.8k $533.0k | Reduced -49.7k |
| Dakota Wealth Management 0.01% of their portfolio | 48.4k $517.4k | Unchanged |
| Kepos Capital LP 2.58% of their portfolio | 42.5k $454.0k | Unchanged |
| ROBINSON CAPITAL MANAGEMENT, LLC 0.10% of their portfolio | 22.2k $238.1k | Unchanged |
| Wellspring Financial Advisors, LLC 0.02% of their portfolio | 21.2k $226.6k | Unchanged |
| Schonfeld Strategic Advisors LLC 0.00% of their portfolio | 18.1k $193.0k | Reduced -1.1k |
| TrueMark Investments, LLC 0.03% of their portfolio | 16.0k $171.4k | Reduced -821 |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 14.9k $159.5k | Reduced -3.9k |
| Cannon Global Investment Management, LLC 0.41% of their portfolio | 14.5k $155.0k | Added +4.0k |
| CONDOR CAPITAL MANAGEMENT 0.01% of their portfolio | 10.6k $113.7k | Unchanged |
| Clear Street Group Inc. 0.00% of their portfolio | 10.3k $110.3k | Unchanged |
| LONGFELLOW INVESTMENT MANAGEMENT CO LLC 0.02% of their portfolio | 7.8k $83.4k | Unchanged |
| UBS Group AG 0.00% of their portfolio | 2.2k $23.8k | Reduced -8.9k |
| MORGAN STANLEY 0.00% of their portfolio | 79 $845 | Added +23 |