DOSSIER · 13F Holders · Q2 2026

AMERICAN EXPRESS CO

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

CUSIP 025816959·11 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$559M
visible holders
Holders
11
filers reporting
Concentration
29.37%
Optiver Holding B.V. #1
top holder share
AI Holders Summary · Q2 2026

11 institutions reported AMERICAN EXPRESS CO in Q2 2026. Optiver Holding B.V. leads at 29.4% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Optiver Holding B.V.
CIK 0001859606· Market maker
$164M485K0.04%Q2 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$153M502K0.03%Q3 2026
03
Assenagon Asset Management S.A.
CIK 0001546007· Quasi-passive
$82M270K0.08%Q3 2026
04
JPMORGAN CHASE & CO
CIK 0000019617
$49M161K0.00%Q3 2026
05
CMT Capital Markets Trading GmbH
CIK 0001632813
$49M162K0.51%Q1 2026
06
SIMPLEX TRADING, LLC
CIK 0001488542
$30M98K0.02%Q3 2026
07
GROUP ONE TRADING LLC
CIK 0000932540
$26M84K0.03%Q3 2026
08
Capital Markets Trading UK LLP
CIK 0001719165
$6M20K0.07%Q1 2026
09
DV Trading LLC
CIK 0001721757
$393K1K0.01%Q1 2026
10
SG Americas Securities, LLC
CIK 0001313360
$247K18K0.00%Q1 2026
11
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025