COSTCO WHSL CORP NEW

Ticker: COST CUSIP: 22160K105 Class: COM

STATE OF MICHIGAN RETIREMENT SYSTEM's Holding History (CIK: 0000762152)

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

Q4 2025

Shares 169,769 Value ($000) $146,399 Avg Close $905.73 Range $844.06 - $962.64

Q3 2025

Shares 174,869 Value ($000) $161,864 Avg Close $956.70 Range $902.01 - $997.89

Q2 2025

Shares 175,569 Value ($000) $173,803 Avg Close $990.72 Range $868.14 - $1064.10

Q1 2025

Shares 175,269 Value ($000) $165,766 Avg Close $970.56 Range $877.95 - $1073.82

Q4 2024

Shares 175,069 Value ($000) $160,410 Avg Close $922.64 Range $861.51 - $1003.02

Q3 2024

Shares 177,669 Value ($000) $157,507 Avg Close $861.91 Range $787.84 - $917.81

Q2 2024

Shares 178,369 Value ($000) $151,612 Avg Close $773.82 Range $690.64 - $867.04

Q1 2024

Shares 157,969 Value ($000) $115,733 Avg Close $706.75 Range $633.49 - $779.59

Q4 2023

Shares 127,569 Value ($000) $84,206 Avg Close $573.49 Range $521.47 - $661.25

Q3 2023

Shares 127,369 Value ($000) $71,958 Avg Close $532.21 Range $505.45 - $552.31

Q2 2023

Shares 129,369 Value ($000) $69,650 Avg Close $487.14 Range $459.09 - $519.84

Q1 2023

Shares 140,269 Value ($000) $69,695 Avg Close $471.27 Range $429.88 - $509.61

Q4 2022

Shares 138,669 Value ($000) $63,302 Avg Close $468.77 Range $430.19 - $520.75

Q3 2022

Shares 136,969 Value ($000) $64,686 Avg Close $498.08 Range $444.08 - $541.06

Q2 2022

Shares 136,569 Value ($000) $65,455 Avg Close $484.91 Range $388.78 - $584.62

Q1 2022

Shares 137,569 Value ($000) $79,219 Avg Close $500.83 Range $447.15 - $559.84

Q4 2021

Shares 136,905 Value ($000) $77,721 Avg Close $488.10 Range $415.17 - $544.86

Q3 2021

Shares 116,805 Value ($000) $52,486 Avg Close $418.22 Range $374.22 - $447.84

Q2 2021

Shares 116,905 Value ($000) $46,256 Avg Close $359.04 Range $333.36 - $380.48

Q1 2021

Shares 111,105 Value ($000) $39,162 Avg Close $329.77 Range $291.05 - $361.01

Q4 2020

Shares 110,905 Value ($000) $41,787 Avg Close $347.39 Range $324.71 - $367.18

Q3 2020

Shares 112,705 Value ($000) $40,010 Avg Close $309.06 Range $276.17 - $334.67

Q2 2020

Shares 112,805 Value ($000) $34,204 Avg Close $279.18 Range $257.36 - $295.59

Q1 2020

Shares 101,236 Value ($000) $28,865 Avg Close $277.78 Range $248.54 - $298.00

Q4 2019

Shares 106,836 Value ($000) $31,401 Avg Close $271.52 Range $256.90 - $280.77

Q3 2019

Shares 105,736 Value ($000) $30,464 Avg Close $256.34 Range $238.19 - $280.38

Q2 2019

Shares 105,336 Value ($000) $27,836 Avg Close $226.60 Range $212.14 - $244.81

Q1 2019

Shares 126,936 Value ($000) $30,736 Avg Close $198.35 Range $180.94 - $220.09

Q4 2018

Shares 125,436 Value ($000) $25,553 Avg Close $201.98 Range $171.58 - $217.57

Q3 2018

Shares 130,636 Value ($000) $30,684 Avg Close $203.13 Range $185.65 - $221.43

Q2 2018

Shares 129,836 Value ($000) $27,133 Avg Close $177.76 Range $162.55 - $191.42

Q1 2018

Shares 129,236 Value ($000) $24,352 Avg Close $169.26 Range $157.50 - $179.09

Q4 2017

Shares 128,136 Value ($000) $23,849 Avg Close $154.45 Range $137.67 - $175.03

Q3 2017

Shares 133,136 Value ($000) $21,873 Avg Close $140.12 Range $133.57 - $147.68

Q2 2017

Shares 144,136 Value ($000) $23,052 Avg Close $150.98 Range $139.41 - $162.71

Q1 2017

Shares 144,136 Value ($000) $24,170 Avg Close $142.87 Range $134.91 - $152.51

Q4 2016

Shares 142,936 Value ($000) $22,885 Avg Close $129.79 Range $120.95 - $140.39

Q3 2016

Shares 152,908 Value ($000) $23,320 Avg Close $136.95 Range $124.90 - $143.90

Q2 2016

Shares 152,208 Value ($000) $23,903 Avg Close $128.04 Range $117.26 - $134.37

Q1 2016

Shares 151,408 Value ($000) $23,859 Avg Close $127.74 Range $119.17 - $135.67

Q4 2015

Shares 149,608 Value ($000) $24,162 Avg Close $132.84 Range $119.34 - $142.82

Q3 2015

Shares 158,708 Value ($000) $22,944 Avg Close $119.60 Range $98.22 - $123.53

Q2 2015

Shares 170,408 Value ($000) $23,015 Avg Close $120.23 Range $112.77 - $127.67

Q1 2015

Shares 169,708 Value ($000) $25,710 Avg Close $120.91 Range $111.40 - $128.73

Q4 2014

Shares 180,308 Value ($000) $25,559 Avg Close $109.42 Range $98.12 - $118.34

Q3 2014

Shares 179,708 Value ($000) $22,521 Avg Close $97.13 Range $92.09 - $102.72

Q2 2014

Shares 179,608 Value ($000) $20,684 Avg Close $91.81 Range $88.18 - $95.25

Q1 2014

Shares 179,508 Value ($000) $20,047 Avg Close $91.29 Range $87.26 - $95.07

Q4 2013

Shares 177,608 Value ($000) $21,137 Avg Close $95.15 Range $87.55 - $100.50

Q3 2013

Shares 177,608 Value ($000) $20,446 Avg Close $91.64 Range $87.25 - $95.29

Q2 2013

Shares 177,408 Value ($000) $19,616 Avg Close $86.56 Range $81.59 - $91.78

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	169,769	$146,399	$905.73	$844.06 - $962.64
Q3 2025	174,869	$161,864	$956.70	$902.01 - $997.89
Q2 2025	175,569	$173,803	$990.72	$868.14 - $1064.10
Q1 2025	175,269	$165,766	$970.56	$877.95 - $1073.82
Q4 2024	175,069	$160,410	$922.64	$861.51 - $1003.02
Q3 2024	177,669	$157,507	$861.91	$787.84 - $917.81
Q2 2024	178,369	$151,612	$773.82	$690.64 - $867.04
Q1 2024	157,969	$115,733	$706.75	$633.49 - $779.59
Q4 2023	127,569	$84,206	$573.49	$521.47 - $661.25
Q3 2023	127,369	$71,958	$532.21	$505.45 - $552.31
Q2 2023	129,369	$69,650	$487.14	$459.09 - $519.84
Q1 2023	140,269	$69,695	$471.27	$429.88 - $509.61
Q4 2022	138,669	$63,302	$468.77	$430.19 - $520.75
Q3 2022	136,969	$64,686	$498.08	$444.08 - $541.06
Q2 2022	136,569	$65,455	$484.91	$388.78 - $584.62
Q1 2022	137,569	$79,219	$500.83	$447.15 - $559.84
Q4 2021	136,905	$77,721	$488.10	$415.17 - $544.86
Q3 2021	116,805	$52,486	$418.22	$374.22 - $447.84
Q2 2021	116,905	$46,256	$359.04	$333.36 - $380.48
Q1 2021	111,105	$39,162	$329.77	$291.05 - $361.01
Q4 2020	110,905	$41,787	$347.39	$324.71 - $367.18
Q3 2020	112,705	$40,010	$309.06	$276.17 - $334.67
Q2 2020	112,805	$34,204	$279.18	$257.36 - $295.59
Q1 2020	101,236	$28,865	$277.78	$248.54 - $298.00
Q4 2019	106,836	$31,401	$271.52	$256.90 - $280.77
Q3 2019	105,736	$30,464	$256.34	$238.19 - $280.38
Q2 2019	105,336	$27,836	$226.60	$212.14 - $244.81
Q1 2019	126,936	$30,736	$198.35	$180.94 - $220.09
Q4 2018	125,436	$25,553	$201.98	$171.58 - $217.57
Q3 2018	130,636	$30,684	$203.13	$185.65 - $221.43
Q2 2018	129,836	$27,133	$177.76	$162.55 - $191.42
Q1 2018	129,236	$24,352	$169.26	$157.50 - $179.09
Q4 2017	128,136	$23,849	$154.45	$137.67 - $175.03
Q3 2017	133,136	$21,873	$140.12	$133.57 - $147.68
Q2 2017	144,136	$23,052	$150.98	$139.41 - $162.71
Q1 2017	144,136	$24,170	$142.87	$134.91 - $152.51
Q4 2016	142,936	$22,885	$129.79	$120.95 - $140.39
Q3 2016	152,908	$23,320	$136.95	$124.90 - $143.90
Q2 2016	152,208	$23,903	$128.04	$117.26 - $134.37
Q1 2016	151,408	$23,859	$127.74	$119.17 - $135.67
Q4 2015	149,608	$24,162	$132.84	$119.34 - $142.82
Q3 2015	158,708	$22,944	$119.60	$98.22 - $123.53
Q2 2015	170,408	$23,015	$120.23	$112.77 - $127.67
Q1 2015	169,708	$25,710	$120.91	$111.40 - $128.73
Q4 2014	180,308	$25,559	$109.42	$98.12 - $118.34
Q3 2014	179,708	$22,521	$97.13	$92.09 - $102.72
Q2 2014	179,608	$20,684	$91.81	$88.18 - $95.25
Q1 2014	179,508	$20,047	$91.29	$87.26 - $95.07
Q4 2013	177,608	$21,137	$95.15	$87.55 - $100.50
Q3 2013	177,608	$20,446	$91.64	$87.25 - $95.29
Q2 2013	177,408	$19,616	$86.56	$81.59 - $91.78