DOSSIER · 13F Holders · Q3 2026

STONEBRIDGE ACQUISITION II C

10 institutions still hold STONEBRIDGE ACQUISITION II C as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G85096124·10 13F holders·last filed Sep 30, 2025
Market cap
—
13F value held
$6M
visible holders
Holders
10
filers reporting
Concentration
22.59%
ATW SPAC MANAGEMENT LLC #1
top holder share
AI Holders Summary · Q3 2026

10 institutions reported STONEBRIDGE ACQUISITION II C in Q3 2026. ATW SPAC MANAGEMENT LLC leads at 22.6% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
ATW SPAC MANAGEMENT LLC
CIK 0001878495
$1M138K1.74%Q3 2025
02
TORONTO DOMINION BANK
CIK 0000947263
$1M121K0.00%Q2 2026
03
MASO CAPITAL PARTNERS Ltd
CIK 0001698093
$747K75K1.23%Q3 2025
04
Yakira Capital Management, Inc.
CIK 0001584639
$665K64K0.17%Q3 2026
05
Quarry LP
CIK 0001965207
$623K60K0.05%Q2 2026
06
Sandia Investment Management LP
CIK 0001880562
$602K60K1.50%Q4 2025
07
Lineage Point Capital LP
CIK 0002093311
$400K40K0.15%Q4 2025
08
Clear Street Group Inc.
CIK 0001881567
$275K27K0.00%Q2 2026
09
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$123K12K0.00%Q2 2026
10
UBS Group AG
CIK 0001610520
$2K1520.00%Q3 2026