13F Insight
DOSSIER · 13F Holders · Q1 2026

GP-ACT III ACQUISITION CORP

34 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 G4035N103·34 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$156M
visible holders
Holders
34
filers reporting
Concentration
15.51%
Karpus Management, Inc. #1
top holder share
AI Holders Summary · Q1 2026

34 institutions reported GP-ACT III ACQUISITION CORP in Q1 2026. Karpus Management, Inc. leads at 15.5% 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
Polar Asset Management Partners Inc.
CIK 0001326389
$20M1.8M0.32%Q2 202603
AQR Arbitrage LLC
CIK 0001167456
$17M1.6M0.35%Q4 202504
D. E. Shaw & Co., Inc.
CIK 0001009207
$15M1.4M0.01%Q4 202505
MMCAP International Inc. SPC
CIK 0001304857
$14M1.3M1.17%Q2 202606
Alberta Investment Management Corp
CIK 0001463559· Sovereign
$11M1.0M0.06%Q2 202607
Schechter Investment Advisors, LLC
CIK 0001951586
$9M893K0.76%Q1 202508
MIZUHO SECURITIES USA LLC
CIK 0000812291
$7M619K0.06%Q2 202609
BERKLEY W R CORP
CIK 0000011544
$5M497K0.25%Q2 202610
Verition Fund Management LLC
CIK 0001454027
$4M399K0.02%Q2 202611
HGC Investment Management Inc.
CIK 0001711200
$4M399K0.86%Q2 202612
RIVERNORTH CAPITAL MANAGEMENT, LLC
CIK 0001447578
$4M360K0.20%Q1 202613
TORONTO DOMINION BANK
CIK 0000947263
$4M345K0.00%Q2 202614
DEUTSCHE BANK AG\
CIK 0000948046
$3M290K0.00%Q2 202615
PICTON MAHONEY ASSET MANAGEMENT
CIK 0001539041
$3M250K0.02%Q2 202616
Jain Global LLC
CIK 0002024579
$3M250K0.01%Q1 202617
OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC)
CIK 0001132716
$3M250K0.07%Q4 202518
GLAZER CAPITAL, LLC
CIK 0001076809
$3M236K0.05%Q1 202619
SONA ASSET MANAGEMENT (US) LLC
CIK 0001856405
$2M200K0.05%Q1 202620
PERISCOPE CAPITAL INC.
CIK 0001695320
$2M150K0.15%Q2 2026
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