DOSSIER · 13F Holders · Q3 2026

MAPLEBEAR INC

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

CUSIP 565394903·6 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$33M
visible holders
Holders
6
filers reporting
Concentration
55.61%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q3 2026

6 institutions reported MAPLEBEAR INC in Q3 2026. IMC-Chicago, LLC leads at 55.6% 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
$18M425K0.00%Q3 2026
02
HRT FINANCIAL LP
CIK 0001475597
$9M199K0.03%Q4 2025
03
SIMPLEX TRADING, LLC
CIK 0001488542
$3M71K0.00%Q3 2026
04
GROUP ONE TRADING LLC
CIK 0000932540
$3M54K0.00%Q2 2026
05
Hurley Capital, LLC
CIK 0001632844
$17K4000.01%Q3 2026
06
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025