13F Insight
DOSSIER · 13F Holders · Q2 2026

DUNE ACQUISITION CORP II

48 institutions still hold DUNE ACQUISITION CORP II as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G2867S109·48 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$111M
visible holders
Holders
48
filers reporting
Concentration
10.30%
ARISTEIA CAPITAL, L.L.C. #1
top holder share
AI Holders Summary · Q2 2026

48 institutions reported DUNE ACQUISITION CORP II in Q2 2026. ARISTEIA CAPITAL, L.L.C. leads at 10.3% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
ARISTEIA CAPITAL, L.L.C.
CIK 0001080171
$11M1.1M0.15%Q2 202602
TENOR CAPITAL MANAGEMENT Co., L.P.
CIK 0001346554
$10M1.0M0.15%Q2 202603
First Trust Capital Management L.P.
CIK 0001604488
$7M700K0.43%Q2 202604
BERKLEY W R CORP
CIK 0000011544
$7M684K0.33%Q2 202605
Westchester Capital Management, LLC
CIK 0001512805
$7M666K0.34%Q2 202606
D. E. Shaw & Co., Inc.
CIK 0001009207
$6M598K0.00%Q4 202507
Polar Asset Management Partners Inc.
CIK 0001326389
$6M575K0.10%Q2 202608
WOLVERINE ASSET MANAGEMENT LLC
CIK 0001279891
$6M570K0.05%Q2 202609
AQR Arbitrage LLC
CIK 0001167456
$6M566K0.12%Q4 202510
MIZUHO SECURITIES USA LLC
CIK 0000812291
$5M510K0.05%Q2 202611
GLAZER CAPITAL, LLC
CIK 0001076809
$5M482K0.11%Q1 202612
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$5M453K0.00%Q2 202613
MANGROVE PARTNERS IM, LLC
CIK 0001535392
$5M450K0.31%Q2 202614
Radcliffe Capital Management, L.P.
CIK 0001218275
$4M425K0.34%Q2 202615
WHITEBOX ADVISORS LLC
CIK 0001257391
$4M400K0.05%Q2 202616
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS
CIK 0001083190
$4M350K0.02%Q2 202617
PICTON MAHONEY ASSET MANAGEMENT
CIK 0001539041
$4M350K0.03%Q2 202618
RIVERNORTH CAPITAL MANAGEMENT, LLC
CIK 0001447578
$3M338K0.17%Q1 202619
O'Connor Alternative Investments LLC
CIK 0002081629
$3M250K0.19%Q2 202620
Bulldog Investors, LLP
CIK 0001504304
$3M250K0.58%Q1 2026
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