GPAT · GP-Act III Acquisition Corp. · Shareholders & Ownership
Substantial doubt about the company's ability to continue as a going concern.
“Management has determined that the liquidity condition, the date of mandatory liquidation and subsequent dissolution raise substantial doubt about the Company's ability to continue as a going concern.”View the 10-Q filed Aug 14, 2026
Every disclosed holder of GPAT in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns GPAT
13F quarter Jun 30, 2026No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 21,705,958 | 134.31% |
| Insiders (Forms 3, 4, 5) | 0 | 0.00% |
| 13D/G-only blocks | 9,998,489 | 61.87% |
| Remaining | 15,543,219 | -96.18% |
| Registered funds (N-PORT, not summed) | 0 | 0.00% |
Shares outstanding: 16,161,228, the issuer's latest cover-page count restated onto today's split basis.
Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.
Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of GPAT
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
|
7,112,500 | ||
| 2 |
Polar Asset Management Partners Inc.
13F
CIK 1326389 · Registered investment adviser · Jun 30, 2026
Classes GPAT, GPATW
|
3,037,500 | ||
| 3 |
|
2,312,500 | ||
| 4 |
AQR Arbitrage LLC
13F
CIK 1167456 · Registered investment adviser · Jun 30, 2026
Classes GPAT, GPATW
|
1,858,963 | ||
| 5 |
Alberta Investment Management Corp
13F
CIK 1463559 · Non-US institution · Jun 30, 2026
Classes GPAT, GPATW
|
1,812,500 | ||
| 6 |
Harraden Circle Investments, LLC
13F
CIK 1910592 · Registered investment adviser · Jun 30, 2026
|
1,520,737 | ||
| 7 |
|
1,485,989 | ||
| 8 |
AQR CAPITAL MANAGEMENT LLC
13G
CIK 1167557 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution
|
1,400,000 | ||
| 9 |
PICTON MAHONEY ASSET MANAGEMENT
13F
CIK 1539041 · Non-US institution · Jun 30, 2026
Classes GPAT, GPATW
|
1,187,500 | ||
| 10 |
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
13F
CIK 1535845 · Non-US institution · Jun 30, 2026
Classes GPAT, GPATW
|
1,087,450 | ||
| 11 |
|
827,005 | ||
| 12 |
Wealthspring Capital LLC
13F
CIK 1844495 · Registered investment adviser · Jun 30, 2026
|
759,264 | ||
| 13 |
|
640,272 | ||
| 14 |
Verition Fund Management LLC
13F
CIK 1454027 · Registered investment adviser · Jun 30, 2026
Classes GPAT, GPATW
|
624,285 | ||
| 15 |
LMR Partners LLP
13F
CIK 1578621 · Exempt reporting adviser · Jun 30, 2026
|
612,500 | ||
| 16 |
MIZUHO SECURITIES USA LLC
13F
CIK 812291 · Unknown · Jun 30, 2026
|
558,486 | ||
| 17 |
BERKLEY W R CORP
13F
CIK 11544 · Insurance company · Jun 30, 2026
|
497,064 | ||
| 18 |
CSS LLC/IL
13F
CIK 1103646 · Unknown · Jun 30, 2026
|
441,672 | ||
| 19 |
HGC Investment Management Inc.
13F
CIK 1711200 · Non-US institution · Jun 30, 2026
|
399,387 | ||
| 20 |
Periscope Capital Inc.
13F
CIK 1695320 · Exempt reporting adviser · Jun 30, 2026
Classes GPAT, GPATW
|
360,700 | ||
| 21 |
Linden Advisors LP
13F
CIK 1279396 · Registered investment adviser · Jun 30, 2026
|
360,400 | ||
| 22 |
Shaolin Capital Management LLC
13F
CIK 1766806 · Registered investment adviser · Jun 30, 2026
|
294,650 | ||
| 23 |
DEUTSCHE BANK AG\
13F
CIK 948046 · Non-US institution · Jun 30, 2026
|
290,000 | ||
| 24 |
Lepercq De Neuflize Asset Management LLC
13F
CIK 1854423 · Registered investment adviser · Jun 30, 2026
|
250,000 | ||
| 25 |
ARISTEIA CAPITAL, L.L.C.
13F
CIK 1080171 · Registered investment adviser · Jun 30, 2026
|
245,375 | ||
| 26 |
RIVERNORTH CAPITAL MANAGEMENT, LLC
13F
CIK 1447578 · Registered investment adviser · Jun 30, 2026
|
225,599 | ||
| 27 |
|
224,474 | ||
| 28 |
GRITSTONE ASSET MANAGEMENT LLC
13F
CIK 1964236 · Registered investment adviser · Jun 30, 2026
|
217,248 | ||
| 29 |
METEORA CAPITAL, LLC
13F
CIK 1905106 · Investment adviser · Jun 30, 2026
|
200,000 | ||
| 30 |
Saba Capital Management, L.P.
13F
CIK 1510281 · Registered investment adviser · Jun 30, 2026
|
193,229 | ||
| 31 |
MOORE CAPITAL MANAGEMENT, LP
13F
CIK 1448574 · Registered investment adviser · Jun 30, 2026
Classes GPAT, GPATW
|
150,000 | ||
| 32 |
L1 Global Manager Pty Ltd
13F
CIK 1878742 · Unknown · Jun 30, 2026
|
110,325 | ||
| 33 |
JPMORGAN CHASE & CO
13F
CIK 19617 · Bank · Jun 30, 2026
|
99,860 | ||
| 34 |
DLD Asset Management, LP
13F
CIK 1578299 · Registered investment adviser · Jun 30, 2026
|
90,500 | ||
| 35 |
Kepos Capital LP
13F
CIK 1512020 · Registered investment adviser · Jun 30, 2026
|
42,500 | ||
| 36 |
BNP PARIBAS ARBITRAGE, SA
13F
CIK 1166588 · Non-US institution · Jun 30, 2026
|
30,923 | ||
| 37 |
Arax Advisory Partners
13F
CIK 1586767 · Registered investment adviser · Jun 30, 2026
|
22,600 | ||
| 38 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
|
21,362 | ||
| 39 |
CITADEL ADVISORS LLC
13F
CIK 1423053 · Registered investment adviser · Jun 30, 2026
|
20,039 | ||
| 40 |
Schonfeld Strategic Advisors LLC
13F
CIK 1665241 · Registered investment adviser · Jun 30, 2026
|
17,743 | ||
| 41 |
SUSQUEHANNA INTERNATIONAL GROUP, LLP
13F
CIK 1446194 · Unknown · Jun 30, 2026
|
17,600 | ||
| 42 |
HRT FINANCIAL LP
13F
CIK 1475597 · Unknown · Jun 30, 2026
|
14,965 | ||
| 43 |
Radcliffe Capital Management, L.P.
13F
CIK 1218275 · Registered investment adviser · Jun 30, 2026
|
13,070 | ||
| 44 |
LONGFELLOW INVESTMENT MANAGEMENT CO LLC
13F
CIK 1167487 · Registered investment adviser · Jun 30, 2026
Classes GPAT, GPATW
|
11,700 | ||
| 45 |
|
3,988 | ||
| 46 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
|
23 |
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.