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 ($2.2m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $10.30.
Trends to Q1 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2024 | 38 |
| Q4 2024 | 43 |
| Q1 2025 | 41 |
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 |
Biggest buyers
| Westchester Capital Management, LLC | Added | +250.9k |
| MIZUHO SECURITIES USA LLC | New | +30.0k |
| WOLVERINE ASSET MANAGEMENT LLC | Added | +10.5k |
| GLAZER CAPITAL, LLC | Added | +4.0k |
| UBS Group AG | Added | +3.8k |
| CITADEL ADVISORS LLC | Added | +1.6k |
| MORGAN STANLEY | New | +32 |
Biggest sellers
| TORONTO DOMINION BANK | Reduced | -176.1k |
| AQR Arbitrage LLC | Reduced | -100.0k |
| Schechter Investment Advisors, LLC | Reduced | -46.3k |
| Karpus Management, Inc. | Reduced | -33.3k |
| FIR TREE CAPITAL MANAGEMENT LP | Sold out | -28.8k |
| ROBINSON CAPITAL MANAGEMENT, LLC | Reduced | -19.5k |
| Tidal Investments LLC | Sold out | -19.5k |
| Wealthspring Capital LLC | Reduced | -12.6k |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | Sold out | -10.0k |
| Verition Fund Management LLC | Reduced | -3.5k |
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 Q1 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 Q1 2025.
Holders, Q1 2025
| Manager | Shares | Change |
|---|---|---|
| Karpus Management, Inc. 1.20% of their portfolio | 3.6m $37.1m | Reduced -33.3k |
| First Trust Capital Management L.P. 1.93% of their portfolio | 2.6m $26.7m | Unchanged |
| HGC Investment Management Inc. 9.08% of their portfolio | 2.5m $25.5m | Unchanged |
| MMCAP International Inc. SPC 3.64% of their portfolio | 2.1m $21.4m | Unchanged |
| PICTON MAHONEY ASSET MANAGEMENT 0.66% of their portfolio | 1.9m $19.3m | Unchanged |
| Polar Asset Management Partners Inc. 0.57% of their portfolio | 1.7m $17.3m | Unchanged |
| AQR Arbitrage LLC 0.40% of their portfolio | 1.6m $16.6m | Reduced -100.0k |
| D. E. Shaw & Co., Inc. 0.02% of their portfolio | 1.2m $12.8m | Unchanged |
| LMR Partners LLP 0.25% of their portfolio | 1.2m $12.6m | Unchanged |
| Westchester Capital Management, LLC 0.70% of their portfolio | 1.2m $12.0m | Added +250.9k |
| Schechter Investment Advisors, LLC 0.76% of their portfolio | 893.3k $9.2m | Reduced -46.3k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 625.0k $6.4m | Unchanged |
| ARISTEIA CAPITAL, L.L.C. 0.16% of their portfolio | 500.0k $5.2m | Unchanged |
| HEIGHTS CAPITAL MANAGEMENT, INC 2.27% of their portfolio | 460.0k $4.8m | Unchanged |
| GRITSTONE ASSET MANAGEMENT LLC 4.76% of their portfolio | 439.9k $4.5m | Reduced -1.5k |
| RIVERNORTH CAPITAL MANAGEMENT, LLC 0.23% of their portfolio | 421.8k $4.3m | Unchanged |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.03% of their portfolio | 412.3k $4.3m | Unchanged |
| WOLVERINE ASSET MANAGEMENT LLC 0.06% of their portfolio | 309.1k $3.2m | Added +10.5k |
| BERKLEY W R CORP 0.22% of their portfolio | 298.0k $3.1m | Unchanged |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio | 295.9k $3.1m | Unchanged |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 290.0k $3.0m | Unchanged |
| GLAZER CAPITAL, LLC 0.13% of their portfolio | 276.2k $2.8m | Added +4.0k |
| Periscope Capital Inc. 1.29% of their portfolio | 225.0k $2.3m | Unchanged |
| Wealthspring Capital LLC 3.32% of their portfolio | 209.3k $2.2m | Reduced -12.6k |
| MOORE CAPITAL MANAGEMENT, LP 0.07% of their portfolio | 200.0k $2.1m | Unchanged |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 160.0k $1.6m | Unchanged |
| TORONTO DOMINION BANK 0.00% of their portfolio | 141.2k $1.5m | Reduced -176.1k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 137.4k $1.4m | Unchanged |
| Verition Fund Management LLC 0.01% of their portfolio | 126.5k $1.3m | Reduced -3.5k |
| Dakota Wealth Management 0.01% of their portfolio | 48.4k $498.0k | Unchanged |
| Kepos Capital LP 0.36% of their portfolio | 42.5k $438.0k | Unchanged |
| MIZUHO SECURITIES USA LLC 0.01% of their portfolio | 30.0k $303.0k | New |
| ROBINSON CAPITAL MANAGEMENT, LLC 0.09% of their portfolio | 22.2k $229.8k | Reduced -19.5k |
| Wellspring Financial Advisors, LLC 0.02% of their portfolio | 18.0k $185.2k | Unchanged |
| TrueMark Investments, LLC 0.05% of their portfolio | 17.7k $183.3k | Unchanged |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 11.8k $121.7k | Added +1.6k |
| CONDOR CAPITAL MANAGEMENT 0.01% of their portfolio | 11.5k $118.5k | Unchanged |
| UBS Group AG 0.00% of their portfolio | 4.2k $42.7k | Added +3.8k |
| CLEAR STREET LLC 0.00% of their portfolio | 121 $1.2k | Reduced -538 |
| MORGAN STANLEY 0.00% of their portfolio | 32 $329 | New |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. — of their portfolio | 0 $0 | Unchanged |