DOSSIER · 13F Holders · Q2 2026

MAPLEBEAR INC

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

CUSIP 565394903·5 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$36M
visible holders
Holders
5
filers reporting
Concentration
51.84%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q2 2026

5 institutions reported MAPLEBEAR INC in Q2 2026. IMC-Chicago, LLC leads at 51.8% 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
$19M395K0.00%Q2 2026
02
HRT FINANCIAL LP
CIK 0001475597
$9M199K0.03%Q4 2025
03
SIMPLEX TRADING, LLC
CIK 0001488542
$6M123K0.00%Q2 2026
04
GROUP ONE TRADING LLC
CIK 0000932540
$3M54K0.00%Q2 2026
05
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025