13F Insight
DOSSIER · 13F Holders · Q2 2026

MASTERCARD INCORPORATED

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

CUSIP 57636Q954·11 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$551M
visible holders
Holders
11
filers reporting
Concentration
45.09%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q2 2026

11 institutions reported MASTERCARD INCORPORATED in Q2 2026. IMC-Chicago, LLC leads at 45.1% 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
$248M484K0.06%Q2 202602
Optiver Holding B.V.
CIK 0001859606· Market maker
$229M445K0.06%Q2 202603
SIMPLEX TRADING, LLC
CIK 0001488542
$34M66K0.02%Q2 202604
GROUP ONE TRADING LLC
CIK 0000932540
$26M52K0.04%Q2 202605
CMT Capital Markets Trading GmbH
CIK 0001632813
$4M9K0.05%Q1 202606
HRT FINANCIAL LP
CIK 0001475597
$4M7K0.01%Q4 202507
JPMORGAN CHASE & CO
CIK 0000019617
$3M5K0.00%Q2 202608
Capital Markets Trading UK LLP
CIK 0001719165
$2M4K0.03%Q1 202609
GUARDIAN CAPITAL LP
CIK 0001224324
$197K3K0.00%Q2 202610
Itau Unibanco Holding S.A.
CIK 0001132597
$43230.00%Q2 202611
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025