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Equibles

GPAT

GP-Act III Acquisition Corp.

Company with tickers: GPAT, GPATU, GPATW

CIK
1834526
CUSIP
G4035N103
Shares Outstanding
35,937,500
13F Activity (30d)
45 filings 43 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 52
Total Value: $287,842,785
Total Shares: 26,553,764

Institutional Ownership Trend

7 quarters

Holder Concentration

Across 52 13F filers · Δ vs Dec 31, 2025
Top Holder
8.4%
Sep 2024 → Mar 2026 · range 8.2% – 13.8%
+0.2 pts
Top 5
33.7%
Sep 2024 → Mar 2026 · range 33.2% – 48.7%
+0.5 pts
Top 10
56.5%
Sep 2024 → Mar 2026 · range 56.5% – 76.1%
−0.0 pts
HHI
429
Sep 2024 → Mar 2026 · range 426 – 685
Broadly held +3

Quarterly Activity

vs Dec 31, 2025
New
5
Increased
7
Decreased
18
Sold Out
5
Unchanged
22
Holder count: 0
Institutional value: -5.8%
Shares held: -7.1%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mid BERKLEY W R CORP +534,533 846,823
Mega JPMORGAN CHASE & CO +500,082 549,898
Large TORONTO DOMINION BANK +235,465 635,465
Small Radcliffe Capital Management, L.P. +50,045 623,267
Mega CITADEL ADVISORS LLC +2,263 17,172

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Small HGC Investment Management Inc. −1,375,000 0
Mid PICTON MAHONEY ASSET MANAGEMENT −500,000 1,375,000
Mid Westchester Capital Management, LLC −500,000 860,852
Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS −358,364 53,900
Mid MIZUHO SECURITIES USA LLC −259,811 60,098

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Small HIGHBRIDGE CAPITAL MANAGEMENT LLC 452,072 $4,900,460
Mid O'Connor Alternative Investments LLC 250,000 $2,710,000
Mid SONA ASSET MANAGEMENT (US) LLC 200,000 $2,168,000
Mega GEODE CAPITAL MANAGEMENT, LLC 11,395 $123,521
Mega ROYAL BANK OF CANADA 900 $9,756

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 295,938 $3,163,577
Mid OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 250,000 $2,672,500
Small Shaolin Capital Management LLC 125,000 $1,336,250
Large Schonfeld Strategic Advisors LLC 18,053 $192,986
Small CONDOR CAPITAL MANAGEMENT 10,632 $113,656
Filter: New 5 Increased 7 Reduced 18 Sold out 5 Unchanged 22
Showing 52 of 52
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mid Karpus Management, Inc. $24,175,541 8.40% 2,230,216
Mid First Trust Capital Management L.P. $22,667,274 7.87% 2,091,077
Mid Alberta Investment Management Corp $17,615,000 6.12% 1,625,000
Mid AQR Arbitrage LLC $17,092,544 5.94% 1,576,803
Mega D. E. Shaw & Co., Inc. $15,426,675 5.36% 1,423,125
Mid PICTON MAHONEY ASSET MANAGEMENT $14,905,000 5.18% 1,375,000
Small MMCAP International Inc. SPC $13,821,000 4.80% 1,275,000
Large LMR Partners LLP $13,279,000 4.61% 1,225,000
Mid Polar Asset Management Partners Inc. $12,736,956 4.42% 1,174,996
Small Wealthspring Capital LLC $10,915,218 3.79% 1,006,939
Mid Westchester Capital Management, LLC $9,331,634 3.24% 860,852
Mid BERKLEY W R CORP $9,179,561 3.19% 846,823
Mid Linden Advisors LP $8,645,810 3.00% 797,584
Mid TENOR CAPITAL MANAGEMENT Co., L.P. $8,130,000 2.82% 750,000
Mid WOLVERINE ASSET MANAGEMENT LLC $8,080,569 2.81% 745,440
Large TORONTO DOMINION BANK Bank $6,888,440 2.39% 635,465
Mega TWO SIGMA INVESTMENTS, LP $6,775,000 2.35% 625,000
Small Radcliffe Capital Management, L.P. $6,756,214 2.35% 623,267
Micro L1 Global Manager Pty Ltd $6,152,415 2.14% 567,566
Mega JPMORGAN CHASE & CO $5,960,894 2.07% 549,898
Mid ARISTEIA CAPITAL, L.L.C. $5,319,730 1.85% 490,750
Small HIGHBRIDGE CAPITAL MANAGEMENT LLC $4,900,460 1.70% 452,072
Small HEIGHTS CAPITAL MANAGEMENT, INC $4,213,713 1.46% 388,719
Mid RIVERNORTH CAPITAL MANAGEMENT, LLC $3,902,540 1.36% 360,013
Mid METEORA CAPITAL, LLC $3,725,946 1.29% 343,722
Mega DEUTSCHE BANK AG\ Bank $3,143,600 1.09% 290,000
Small Periscope Capital Inc. $2,710,000 0.94% 250,000
Mid O'Connor Alternative Investments LLC $2,710,000 0.94% 250,000
Large Jain Global LLC $2,709,783 0.94% 249,980
Mid GLAZER CAPITAL, LLC $2,560,700 0.89% 236,227
Large Verition Fund Management LLC $2,467,053 0.86% 227,588
Mid SONA ASSET MANAGEMENT (US) LLC $2,168,000 0.75% 200,000
Mid MOORE CAPITAL MANAGEMENT, LP $2,168,000 0.75% 200,000
Mega GOLDMAN SACHS GROUP INC $1,493,090 0.52% 137,739
Mega PNC FINANCIAL SERVICES GROUP, INC. $867,200 0.30% 80,000
Small Lineage Point Capital LP $704,600 0.24% 65,000
Mid MIZUHO SECURITIES USA LLC Broker-Dealer $651,462 0.23% 60,098
Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS $584,276 0.20% 53,900
Mid Dakota Wealth Management $502,976 0.17% 46,400
Micro Kepos Capital LP $460,700 0.16% 42,500
Small ROBINSON CAPITAL MANAGEMENT, LLC $241,190 0.08% 22,250
Mid Wellspring Financial Advisors, LLC $229,808 0.08% 21,200
Mega CITADEL ADVISORS LLC $186,144 0.06% 17,172
Micro Cannon Global Investment Management, LLC $181,028 0.06% 16,700
Small TrueMark Investments, LLC $173,624 0.06% 16,017
Mega GEODE CAPITAL MANAGEMENT, LLC $123,521 0.04% 11,395
Large Clear Street Group Inc. $111,879 0.04% 10,321
Small LONGFELLOW INVESTMENT MANAGEMENT CO LLC $84,552 0.03% 7,800
Mega ROYAL BANK OF CANADA Bank $9,756 0.00% 900
Mega UBS Group AG $2,016 0.00% 186
Mega MORGAN STANLEY $693 0.00% 64
Small HGC Investment Management Inc. $0 0.00% 0

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