COSTCO WHSL CORP NEW

Ticker: COST CUSIP: 22160K105 Class: COM

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 3,949 Value ($000) $3,405 Avg Close $905.73 Range $844.06 - $962.64

Q4 2024

Shares 8,469 Value ($000) $8 Avg Close $922.64 Range $861.51 - $1003.02

Q3 2024

Shares 2,260 Value ($000) $2 Avg Close $861.91 Range $787.84 - $917.81

Q1 2024

Shares 5,589 Value ($000) $4 Avg Close $706.75 Range $633.49 - $779.59

Q2 2023

Shares 163 Value ($000) $0 Avg Close $487.14 Range $459.09 - $519.84

Q3 2022

Shares 16,879 Value ($000) $7,971 Avg Close $498.08 Range $444.08 - $541.06

Q1 2022

Shares 24,538 Value ($000) $14,130 Avg Close $500.83 Range $447.15 - $559.84

Q4 2021

Shares 15,732 Value ($000) $8,931 Avg Close $488.10 Range $415.17 - $544.86

Q3 2021

Shares 7,939 Value ($000) $3,132 Avg Close $418.22 Range $374.22 - $447.84

Q2 2021

Shares 6,123 Value ($000) $2,422 Avg Close $359.04 Range $333.36 - $380.48

Q1 2021

Shares 21,401 Value ($000) $0 Avg Close $329.77 Range $291.05 - $361.01

Q2 2020

Shares 14,128 Value ($000) $4,283 Avg Close $279.18 Range $257.36 - $295.59

Q4 2018

Shares 200 Value ($000) $40 Avg Close $201.98 Range $171.58 - $217.57

Q3 2018

Shares 16,329 Value ($000) $3,835 Avg Close $203.13 Range $185.65 - $221.43

Q2 2018

Shares 9,461 Value ($000) $1,977 Avg Close $177.76 Range $162.55 - $191.42

Q4 2017

Shares 3,647 Value ($000) $678 Avg Close $154.45 Range $137.67 - $175.03

Q2 2017

Shares 44,997 Value ($000) $7,196 Avg Close $150.98 Range $139.41 - $162.71

Q1 2017

Shares 28,528 Value ($000) $4,783 Avg Close $142.87 Range $134.91 - $152.51

Q4 2016

Shares 51,977 Value ($000) $8,322 Avg Close $129.79 Range $120.95 - $140.39

Q4 2015

Shares 2,940 Value ($000) $474 Avg Close $132.84 Range $119.34 - $142.82

Q2 2015

Shares 782 Value ($000) $105 Avg Close $120.23 Range $112.77 - $127.67

Q4 2014

Shares 11,589 Value ($000) $1,643 Avg Close $109.42 Range $98.12 - $118.34

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	3,949	$3,405	$905.73	$844.06 - $962.64
Q4 2024	8,469	$8	$922.64	$861.51 - $1003.02
Q3 2024	2,260	$2	$861.91	$787.84 - $917.81
Q1 2024	5,589	$4	$706.75	$633.49 - $779.59
Q2 2023	163	$0	$487.14	$459.09 - $519.84
Q3 2022	16,879	$7,971	$498.08	$444.08 - $541.06
Q1 2022	24,538	$14,130	$500.83	$447.15 - $559.84
Q4 2021	15,732	$8,931	$488.10	$415.17 - $544.86
Q3 2021	7,939	$3,132	$418.22	$374.22 - $447.84
Q2 2021	6,123	$2,422	$359.04	$333.36 - $380.48
Q1 2021	21,401	$0	$329.77	$291.05 - $361.01
Q2 2020	14,128	$4,283	$279.18	$257.36 - $295.59
Q4 2018	200	$40	$201.98	$171.58 - $217.57
Q3 2018	16,329	$3,835	$203.13	$185.65 - $221.43
Q2 2018	9,461	$1,977	$177.76	$162.55 - $191.42
Q4 2017	3,647	$678	$154.45	$137.67 - $175.03
Q2 2017	44,997	$7,196	$150.98	$139.41 - $162.71
Q1 2017	28,528	$4,783	$142.87	$134.91 - $152.51
Q4 2016	51,977	$8,322	$129.79	$120.95 - $140.39
Q4 2015	2,940	$474	$132.84	$119.34 - $142.82
Q2 2015	782	$105	$120.23	$112.77 - $127.67
Q4 2014	11,589	$1,643	$109.42	$98.12 - $118.34