MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

Arizona State Retirement System's Holding History (CIK: 0001558481)

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

Q4 2025

Shares 18,809 Value ($000) $3,006 Avg Close $148.21 Range $120.73 - $170.37

Q3 2025

Shares 19,827 Value ($000) $2,454 Avg Close $106.31 Range $88.17 - $132.24

Q2 2025

Shares 19,686 Value ($000) $1,956 Avg Close $80.86 Range $54.50 - $100.44

Q1 2025

Shares 19,288 Value ($000) $1,546 Avg Close $100.21 Range $75.89 - $124.28

Q4 2024

Shares 19,527 Value ($000) $2,038 Avg Close $106.91 Range $96.54 - $118.37

Q3 2024

Shares 19,349 Value ($000) $2,103 Avg Close $117.45 Range $99.10 - $145.63

Q2 2024

Shares 18,771 Value ($000) $2,451 Avg Close $124.55 Range $105.72 - $137.52

Q1 2024

Shares 17,461 Value ($000) $2,322 Avg Close $114.51 Range $94.23 - $132.85

Q4 2023

Shares 17,757 Value ($000) $1,827 Avg Close $79.84 Range $62.28 - $104.49

Q3 2023

Shares 17,109 Value ($000) $1,481 Avg Close $95.58 Range $81.25 - $107.67

Q2 2023

Shares 16,853 Value ($000) $1,822 Avg Close $89.53 Range $77.81 - $108.20

Q1 2023

Shares 17,343 Value ($000) $1,537 Avg Close $93.12 Range $80.00 - $111.27

Q4 2022

Shares 16,886 Value ($000) $1,431 Avg Close $78.00 Range $62.97 - $89.22

Q3 2022

Shares 16,241 Value ($000) $1,342 Avg Close $100.01 Range $79.23 - $120.27

Q2 2022

Shares 15,045 Value ($000) $1,544 Avg Close $112.92 Range $94.75 - $148.07

Q1 2022

Shares 14,991 Value ($000) $2,249 Avg Close $150.35 Range $131.30 - $175.09

Q4 2021

Shares 14,925 Value ($000) $2,599 Avg Close $151.09 Range $136.06 - $172.80

Q3 2021

Shares 15,079 Value ($000) $2,276 Avg Close $148.13 Range $133.76 - $168.78

Q2 2021

Shares 15,011 Value ($000) $2,671 Avg Close $175.09 Range $158.98 - $192.11

Q1 2021

Shares 16,050 Value ($000) $2,976 Avg Close $161.78 Range $138.78 - $185.00

Q4 2020

Shares 15,987 Value ($000) $2,405 Avg Close $125.75 Range $101.82 - $152.08

Q3 2020

Shares 16,585 Value ($000) $1,812 Avg Close $112.47 Range $97.77 - $124.64

Q2 2020

Shares 12,303 Value ($000) $1,393 Avg Close $95.31 Range $70.45 - $112.06

Q1 2020

Shares 12,797 Value ($000) $1,042 Avg Close $97.84 Range $64.00 - $116.86

Q4 2019

Shares 30,911 Value ($000) $3,401 Avg Close $99.99 Range $81.07 - $109.78

Q3 2019

Shares 33,957 Value ($000) $3,134 Avg Close $78.64 Range $68.69 - $91.29

Q2 2019

Shares 39,452 Value ($000) $3,073 Avg Close $80.27 Range $67.03 - $98.53

Q1 2019

Shares 38,917 Value ($000) $3,621 Avg Close $76.40 Range $59.36 - $88.91

Q4 2018

Shares 38,748 Value ($000) $2,504 Avg Close $68.31 Range $53.35 - $77.61

Q3 2018

Shares 38,904 Value ($000) $3,118 Avg Close $86.11 Range $74.38 - $97.19

Q2 2018

Shares 37,964 Value ($000) $3,633 Avg Close $102.60 Range $86.55 - $115.42

Q1 2018

Shares 36,881 Value ($000) $4,265 Avg Close $103.13 Range $88.32 - $120.60

Q4 2017

Shares 39,081 Value ($000) $3,693 Avg Close $93.43 Range $82.69 - $103.63

Q3 2017

Shares 28,176 Value ($000) $2,661 Avg Close $76.52 Range $62.45 - $89.48

Q2 2017

Shares 28,176 Value ($000) $1,896 Avg Close $70.74 Range $60.40 - $82.65

Q1 2017

Shares 28,076 Value ($000) $1,930 Avg Close $61.31 Range $54.85 - $65.67

Q4 2016

Shares 27,576 Value ($000) $1,638 Avg Close $50.13 Range $43.15 - $57.04

Q3 2016

Shares 27,676 Value ($000) $1,376 Avg Close $43.66 Range $38.22 - $50.60

Q2 2016

Shares 27,676 Value ($000) $1,192 Avg Close $35.80 Range $32.24 - $39.81

Q1 2016

Shares 27,276 Value ($000) $1,027 Avg Close $31.35 Range $28.08 - $35.11

Q4 2015

Shares 26,476 Value ($000) $953 Avg Close $32.52 Range $26.43 - $35.02

Q3 2015

Shares 25,676 Value ($000) $861 Avg Close $31.60 Range $28.82 - $34.92

Q4 2014

Shares 37,033 Value ($000) $1,355 Avg Close $31.69 Range $27.30 - $33.99

Q3 2014

Shares 36,833 Value ($000) $1,229 Avg Close $29.19 Range $27.47 - $31.20

Q2 2014

Shares 38,833 Value ($000) $1,213 Avg Close $25.69 Range $23.72 - $27.88

Q1 2014

Shares 38,233 Value ($000) $1,142 Avg Close $26.46 Range $25.10 - $28.61

Q4 2013

Shares 42,333 Value ($000) $1,267 Avg Close $25.51 Range $23.10 - $27.14

Q3 2013

Shares 47,533 Value ($000) $1,263 Avg Close $23.28 Range $21.63 - $25.20

Q2 2013

Shares 47,433 Value ($000) $1,258 Avg Close $23.45 Range $21.31 - $25.25

Q1 2013

Shares 47,133 Value ($000) $1,282 Avg Close $23.60 Range $22.07 - $25.32

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	18,809	$3,006	$148.21	$120.73 - $170.37
Q3 2025	19,827	$2,454	$106.31	$88.17 - $132.24
Q2 2025	19,686	$1,956	$80.86	$54.50 - $100.44
Q1 2025	19,288	$1,546	$100.21	$75.89 - $124.28
Q4 2024	19,527	$2,038	$106.91	$96.54 - $118.37
Q3 2024	19,349	$2,103	$117.45	$99.10 - $145.63
Q2 2024	18,771	$2,451	$124.55	$105.72 - $137.52
Q1 2024	17,461	$2,322	$114.51	$94.23 - $132.85
Q4 2023	17,757	$1,827	$79.84	$62.28 - $104.49
Q3 2023	17,109	$1,481	$95.58	$81.25 - $107.67
Q2 2023	16,853	$1,822	$89.53	$77.81 - $108.20
Q1 2023	17,343	$1,537	$93.12	$80.00 - $111.27
Q4 2022	16,886	$1,431	$78.00	$62.97 - $89.22
Q3 2022	16,241	$1,342	$100.01	$79.23 - $120.27
Q2 2022	15,045	$1,544	$112.92	$94.75 - $148.07
Q1 2022	14,991	$2,249	$150.35	$131.30 - $175.09
Q4 2021	14,925	$2,599	$151.09	$136.06 - $172.80
Q3 2021	15,079	$2,276	$148.13	$133.76 - $168.78
Q2 2021	15,011	$2,671	$175.09	$158.98 - $192.11
Q1 2021	16,050	$2,976	$161.78	$138.78 - $185.00
Q4 2020	15,987	$2,405	$125.75	$101.82 - $152.08
Q3 2020	16,585	$1,812	$112.47	$97.77 - $124.64
Q2 2020	12,303	$1,393	$95.31	$70.45 - $112.06
Q1 2020	12,797	$1,042	$97.84	$64.00 - $116.86
Q4 2019	30,911	$3,401	$99.99	$81.07 - $109.78
Q3 2019	33,957	$3,134	$78.64	$68.69 - $91.29
Q2 2019	39,452	$3,073	$80.27	$67.03 - $98.53
Q1 2019	38,917	$3,621	$76.40	$59.36 - $88.91
Q4 2018	38,748	$2,504	$68.31	$53.35 - $77.61
Q3 2018	38,904	$3,118	$86.11	$74.38 - $97.19
Q2 2018	37,964	$3,633	$102.60	$86.55 - $115.42
Q1 2018	36,881	$4,265	$103.13	$88.32 - $120.60
Q4 2017	39,081	$3,693	$93.43	$82.69 - $103.63
Q3 2017	28,176	$2,661	$76.52	$62.45 - $89.48
Q2 2017	28,176	$1,896	$70.74	$60.40 - $82.65
Q1 2017	28,076	$1,930	$61.31	$54.85 - $65.67
Q4 2016	27,576	$1,638	$50.13	$43.15 - $57.04
Q3 2016	27,676	$1,376	$43.66	$38.22 - $50.60
Q2 2016	27,676	$1,192	$35.80	$32.24 - $39.81
Q1 2016	27,276	$1,027	$31.35	$28.08 - $35.11
Q4 2015	26,476	$953	$32.52	$26.43 - $35.02
Q3 2015	25,676	$861	$31.60	$28.82 - $34.92
Q4 2014	37,033	$1,355	$31.69	$27.30 - $33.99
Q3 2014	36,833	$1,229	$29.19	$27.47 - $31.20
Q2 2014	38,833	$1,213	$25.69	$23.72 - $27.88
Q1 2014	38,233	$1,142	$26.46	$25.10 - $28.61
Q4 2013	42,333	$1,267	$25.51	$23.10 - $27.14
Q3 2013	47,533	$1,263	$23.28	$21.63 - $25.20
Q2 2013	47,433	$1,258	$23.45	$21.31 - $25.25
Q1 2013	47,133	$1,282	$23.60	$22.07 - $25.32