DOSSIER · 13F Holders · Q3 2026

ROBLOX CORP

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

CUSIP 771049953·7 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$122M
visible holders
Holders
7
filers reporting
Concentration
72.06%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q3 2026

7 institutions reported ROBLOX CORP in Q3 2026. IMC-Chicago, LLC leads at 72.1% 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
$88M2.1M0.02%Q3 2026
02
GROUP ONE TRADING LLC
CIK 0000932540
$12M213K0.02%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$10M240K0.01%Q3 2026
04
Optiver Holding B.V.
CIK 0001859606· Market maker
$7M137K0.00%Q2 2026
05
JPMORGAN CHASE & CO
CIK 0000019617
$4M72K0.00%Q2 2026
06
CMT Capital Markets Trading GmbH
CIK 0001632813
$1M20K0.01%Q1 2026
07
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025