DOSSIER · 13F Holders · Q2 2026

MORGAN STANLEY

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

CUSIP 617446908·12 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$516M
visible holders
Holders
12
filers reporting
Concentration
35.50%
Optiver Holding B.V. #1
top holder share
AI Holders Summary · Q2 2026

12 institutions reported MORGAN STANLEY in Q2 2026. Optiver Holding B.V. leads at 35.5% 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
$183M876K0.05%Q2 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$157M753K0.04%Q2 2026
03
JPMORGAN CHASE & CO
CIK 0000019617
$73M344K0.00%Q2 2026
04
GROUP ONE TRADING LLC
CIK 0000932540
$53M252K0.07%Q2 2026
05
SIMPLEX TRADING, LLC
CIK 0001488542
$34M161K0.02%Q2 2026
06
CIBC Bancorp USA Inc.
CIK 0001711924
$7M32K0.01%Q2 2026
07
SG Americas Securities, LLC
CIK 0001313360
$4M160K0.00%Q1 2026
08
CLEAR WAVE WEALTH MANAGEMENT LLC
CIK 0002113615
$3M13K0.48%Q2 2026
09
RH Tailwind Management, LLC
CIK 0002065331
$2M10K0.21%Q2 2026
10
Capital Markets Trading UK LLP
CIK 0001719165
$675K4K0.01%Q1 2026
11
CMT Capital Markets Trading GmbH
CIK 0001632813
$214K1K0.00%Q1 2026
12
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025