DOSSIER · 13F Holders · Q1 2026

RUBICO INC

4 institutions still hold RUBICO INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP Y1250N115·4 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$20K
visible holders
Holders
4
filers reporting
Concentration
69.87%
JANE STREET GROUP, LLC #1
top holder share
AI Holders Summary · Q1 2026

4 institutions reported RUBICO INC in Q1 2026. JANE STREET GROUP, LLC leads at 69.9% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$14K29K0.00%Q1 2026
02
Tower Research Capital LLC (TRC)
CIK 0001533421
$4K8K0.00%Q1 2026
03
UBS Group AG
CIK 0001610520
$2K4K0.00%Q1 2026
04
CITIGROUP INC
CIK 0000831001
$14300.00%Q1 2026