DOSSIER · 13F Holders · Q3 2026

ROBLOX CORP

8 institutions still hold ROBLOX CORP as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 771049903·8 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$167M
visible holders
Holders
8
filers reporting
Concentration
40.38%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q3 2026

8 institutions reported ROBLOX CORP in Q3 2026. IMC-Chicago, LLC leads at 40.4% 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
$68M1.6M0.01%Q3 2026
02
JPMORGAN CHASE & CO
CIK 0000019617
$36M664K0.00%Q2 2026
03
GROUP ONE TRADING LLC
CIK 0000932540
$31M566K0.04%Q2 2026
04
SIMPLEX TRADING, LLC
CIK 0001488542
$18M423K0.01%Q3 2026
05
Optiver Holding B.V.
CIK 0001859606· Market maker
$15M268K0.00%Q2 2026
06
Sunstone Asset Management, L.P.
CIK 0002111996
$364K40K0.39%Q2 2026
07
OSAIC HOLDINGS, INC.
CIK 0001677044
$27010.00%Q2 2026
08
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025