13F Insight
DOSSIER · 13F Holders · Q1 2026

GP-ACT III ACQUISITION CORP

52 institutions still hold GP-ACT III ACQUISITION CORP as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G4035N103·52 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$236M
visible holders
Holders
52
filers reporting
Concentration
10.23%
Karpus Management, Inc. #1
top holder share
AI Holders Summary · Q1 2026

52 institutions reported GP-ACT III ACQUISITION CORP in Q1 2026. Karpus Management, Inc. leads at 10.2% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Karpus Management, Inc.
CIK 0001048703
$24M2.2M0.75%Q1 202602
First Trust Capital Management L.P.
CIK 0001604488
$23M2.1M1.19%Q1 202603
Alberta Investment Management Corp
CIK 0001463559· Sovereign
$18M1.6M0.11%Q1 202604
AQR Arbitrage LLC
CIK 0001167456
$17M1.6M0.35%Q4 202505
D. E. Shaw & Co., Inc.
CIK 0001009207
$15M1.4M0.01%Q4 202506
PICTON MAHONEY ASSET MANAGEMENT
CIK 0001539041
$15M1.4M0.11%Q1 202607
MMCAP International Inc. SPC
CIK 0001304857
$14M1.3M1.19%Q1 202608
LMR Partners LLP
CIK 0001578621
$13M1.2M0.03%Q1 202609
Polar Asset Management Partners Inc.
CIK 0001326389
$13M1.2M0.25%Q1 202610
Westchester Capital Management, LLC
CIK 0001512805
$9M861K0.42%Q1 202611
Schechter Investment Advisors, LLC
CIK 0001951586
$9M893K0.76%Q1 202512
BERKLEY W R CORP
CIK 0000011544
$9M847K0.49%Q1 202613
LINDEN ADVISORS LP
CIK 0001279396
$9M798K0.05%Q1 202614
TENOR CAPITAL MANAGEMENT Co., L.P.
CIK 0001346554
$8M750K0.13%Q1 202615
WOLVERINE ASSET MANAGEMENT LLC
CIK 0001279891
$8M745K0.08%Q1 202616
TORONTO DOMINION BANK
CIK 0000947263
$7M635K0.01%Q1 202617
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$7M625K0.01%Q1 202618
Radcliffe Capital Management, L.P.
CIK 0001218275
$7M623K0.51%Q1 202619
L1 Global Manager Pty Ltd
CIK 0001878742
$6M568K4.12%Q1 202620
JPMORGAN CHASE & CO
CIK 0000019617
$6M550K0.00%Q1 2026
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