DOSSIER · 13F Holders · Q2 2026

OKLO INC

7 institutions still hold OKLO INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 02156V909·7 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$238M
visible holders
Holders
7
filers reporting
Concentration
57.05%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q2 2026

7 institutions reported OKLO INC in Q2 2026. IMC-Chicago, LLC leads at 57.0% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
IMC-Chicago, LLC
CIK 0001452861· Market maker
$136M2.6M0.03%Q2 2026
02
GROUP ONE TRADING LLC
CIK 0000932540
$71M1.4M0.10%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$30M575K0.02%Q2 2026
04
Stonegate Investment Group, LLC
CIK 0001904154
$778K1000.02%Q3 2025
05
Vienna Asset Management LLC
CIK 0001913545
$225K4K0.16%Q2 2026
06
OSAIC HOLDINGS, INC.
CIK 0001677044
$4K50.00%Q2 2026
07
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025