DOSSIER · 13F Holders · Q2 2026

COSTCO WHSL CORP NEW

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

CUSIP 22160K905·12 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$1.6B
visible holders
Holders
12
filers reporting
Concentration
50.36%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q2 2026

12 institutions reported COSTCO WHSL CORP NEW in Q2 2026. IMC-Chicago, LLC leads at 50.4% 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
$804M859K0.19%Q2 2026
02
Optiver Holding B.V.
CIK 0001859606· Market maker
$251M268K0.07%Q2 2026
03
JPMORGAN CHASE & CO
CIK 0000019617
$220M232K0.01%Q2 2026
04
NATIONAL BANK OF CANADA /FI/
CIK 0000926171
$187M2K0.13%Q2 2026
05
SIMPLEX TRADING, LLC
CIK 0001488542
$69M74K0.04%Q2 2026
06
GROUP ONE TRADING LLC
CIK 0000932540
$35M37K0.05%Q2 2026
07
Maven Securities LTD
CIK 0001633046
$29M31K0.56%Q2 2026
08
SG Americas Securities, LLC
CIK 0001313360
$1M23K0.00%Q1 2026
09
HRT FINANCIAL LP
CIK 0001475597
$603K7000.00%Q4 2025
10
OSAIC HOLDINGS, INC.
CIK 0001677044
$183K1060.00%Q2 2026
11
AlphaCore Capital LLC
CIK 0001713662
$60K150.00%Q2 2026
12
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025