MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

Louisiana State Employees Retirement System's Holding History (CIK: 0001537191)

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

Q4 2025

Shares 18,600 Value ($000) $2,972 Avg Close $148.21 Range $120.73 - $170.37

Q3 2025

Shares 18,700 Value ($000) $2,314 Avg Close $106.31 Range $88.17 - $132.24

Q2 2025

Shares 18,900 Value ($000) $1,878 Avg Close $80.86 Range $54.50 - $100.44

Q1 2025

Shares 18,900 Value ($000) $1,515 Avg Close $100.21 Range $75.89 - $124.28

Q4 2024

Shares 18,700 Value ($000) $1,952 Avg Close $106.91 Range $96.54 - $118.37

Q3 2024

Shares 18,600 Value ($000) $2,022 Avg Close $117.45 Range $99.10 - $145.63

Q2 2024

Shares 17,900 Value ($000) $2,337 Avg Close $124.55 Range $105.72 - $137.52

Q1 2024

Shares 18,100 Value ($000) $2,407 Avg Close $114.51 Range $94.23 - $132.85

Q4 2023

Shares 17,700 Value ($000) $1,821 Avg Close $79.84 Range $62.28 - $104.49

Q3 2023

Shares 17,800 Value ($000) $1,540 Avg Close $95.58 Range $81.25 - $107.67

Q2 2023

Shares 16,800 Value ($000) $1,816 Avg Close $89.53 Range $77.81 - $108.20

Q1 2023

Shares 15,200 Value ($000) $1,347 Avg Close $93.12 Range $80.00 - $111.27

Q4 2022

Shares 15,300 Value ($000) $1 Avg Close $78.00 Range $62.97 - $89.22

Q3 2022

Shares 15,200 Value ($000) $1,256 Avg Close $100.01 Range $79.23 - $120.27

Q2 2022

Shares 14,600 Value ($000) $1,561 Avg Close $112.92 Range $94.75 - $148.07

Q1 2022

Shares 14,500 Value ($000) $1,761 Avg Close $150.35 Range $131.30 - $175.09

Q4 2021

Shares 14,300 Value ($000) $2,491 Avg Close $151.09 Range $136.06 - $172.80

Q3 2021

Shares 14,100 Value ($000) $2,128 Avg Close $148.13 Range $133.76 - $168.78

Q2 2021

Shares 14,400 Value ($000) $2,562 Avg Close $175.09 Range $158.98 - $192.11

Q1 2021

Shares 14,300 Value ($000) $2,652 Avg Close $161.78 Range $138.78 - $185.00

Q4 2020

Shares 13,800 Value ($000) $2,076 Avg Close $125.75 Range $101.82 - $152.08

Q3 2020

Shares 13,800 Value ($000) $1,507 Avg Close $112.47 Range $97.77 - $124.64

Q2 2020

Shares 13,700 Value ($000) $1,551 Avg Close $95.31 Range $70.45 - $112.06

Q1 2020

Shares 13,200 Value ($000) $1,075 Avg Close $97.84 Range $64.00 - $116.86

Q4 2019

Shares 13,200 Value ($000) $1,452 Avg Close $99.99 Range $81.07 - $109.78

Q3 2019

Shares 13,100 Value ($000) $1,209 Avg Close $78.64 Range $68.69 - $91.29

Q2 2019

Shares 13,900 Value ($000) $1,085 Avg Close $80.27 Range $67.03 - $98.53

Q1 2019

Shares 14,500 Value ($000) $1,349 Avg Close $76.40 Range $59.36 - $88.91

Q4 2018

Shares 14,300 Value ($000) $924 Avg Close $68.31 Range $53.35 - $77.61

Q3 2018

Shares 15,000 Value ($000) $1,202 Avg Close $86.11 Range $74.38 - $97.19

Q2 2018

Shares 14,800 Value ($000) $1,416 Avg Close $102.60 Range $86.55 - $115.42

Q1 2018

Shares 14,300 Value ($000) $1,654 Avg Close $103.13 Range $88.32 - $120.60

Q4 2017

Shares 13,700 Value ($000) $1,295 Avg Close $93.43 Range $82.69 - $103.63

Q3 2017

Shares 22,000 Value ($000) $2,078 Avg Close $76.52 Range $62.45 - $89.48

Q2 2017

Shares 22,000 Value ($000) $1,481 Avg Close $70.74 Range $60.40 - $82.65

Q1 2017

Shares 21,900 Value ($000) $1,506 Avg Close $61.31 Range $54.85 - $65.67

Q4 2016

Shares 21,500 Value ($000) $1,277 Avg Close $50.13 Range $43.15 - $57.04

Q3 2016

Shares 23,700 Value ($000) $1,179 Avg Close $43.66 Range $38.22 - $50.60

Q2 2016

Shares 23,600 Value ($000) $1,016 Avg Close $35.80 Range $32.24 - $39.81

Q1 2016

Shares 23,600 Value ($000) $889 Avg Close $31.35 Range $28.08 - $35.11

Q4 2015

Shares 23,500 Value ($000) $846 Avg Close $32.52 Range $26.43 - $35.02

Q3 2015

Shares 23,500 Value ($000) $788 Avg Close $31.60 Range $28.82 - $34.92

Q2 2015

Shares 23,700 Value ($000) $899 Avg Close $32.93 Range $29.54 - $35.95

Q1 2015

Shares 23,300 Value ($000) $788 Avg Close $31.63 Range $29.59 - $33.22

Q4 2014

Shares 24,300 Value ($000) $889 Avg Close $31.69 Range $27.30 - $33.99

Q3 2014

Shares 24,400 Value ($000) $814 Avg Close $29.19 Range $27.47 - $31.20

Q2 2014

Shares 24,900 Value ($000) $778 Avg Close $25.69 Range $23.72 - $27.88

Q1 2014

Shares 24,700 Value ($000) $738 Avg Close $26.46 Range $25.10 - $28.61

Q4 2013

Shares 24,600 Value ($000) $736 Avg Close $25.51 Range $23.10 - $27.14

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	18,600	$2,972	$148.21	$120.73 - $170.37
Q3 2025	18,700	$2,314	$106.31	$88.17 - $132.24
Q2 2025	18,900	$1,878	$80.86	$54.50 - $100.44
Q1 2025	18,900	$1,515	$100.21	$75.89 - $124.28
Q4 2024	18,700	$1,952	$106.91	$96.54 - $118.37
Q3 2024	18,600	$2,022	$117.45	$99.10 - $145.63
Q2 2024	17,900	$2,337	$124.55	$105.72 - $137.52
Q1 2024	18,100	$2,407	$114.51	$94.23 - $132.85
Q4 2023	17,700	$1,821	$79.84	$62.28 - $104.49
Q3 2023	17,800	$1,540	$95.58	$81.25 - $107.67
Q2 2023	16,800	$1,816	$89.53	$77.81 - $108.20
Q1 2023	15,200	$1,347	$93.12	$80.00 - $111.27
Q4 2022	15,300	$1	$78.00	$62.97 - $89.22
Q3 2022	15,200	$1,256	$100.01	$79.23 - $120.27
Q2 2022	14,600	$1,561	$112.92	$94.75 - $148.07
Q1 2022	14,500	$1,761	$150.35	$131.30 - $175.09
Q4 2021	14,300	$2,491	$151.09	$136.06 - $172.80
Q3 2021	14,100	$2,128	$148.13	$133.76 - $168.78
Q2 2021	14,400	$2,562	$175.09	$158.98 - $192.11
Q1 2021	14,300	$2,652	$161.78	$138.78 - $185.00
Q4 2020	13,800	$2,076	$125.75	$101.82 - $152.08
Q3 2020	13,800	$1,507	$112.47	$97.77 - $124.64
Q2 2020	13,700	$1,551	$95.31	$70.45 - $112.06
Q1 2020	13,200	$1,075	$97.84	$64.00 - $116.86
Q4 2019	13,200	$1,452	$99.99	$81.07 - $109.78
Q3 2019	13,100	$1,209	$78.64	$68.69 - $91.29
Q2 2019	13,900	$1,085	$80.27	$67.03 - $98.53
Q1 2019	14,500	$1,349	$76.40	$59.36 - $88.91
Q4 2018	14,300	$924	$68.31	$53.35 - $77.61
Q3 2018	15,000	$1,202	$86.11	$74.38 - $97.19
Q2 2018	14,800	$1,416	$102.60	$86.55 - $115.42
Q1 2018	14,300	$1,654	$103.13	$88.32 - $120.60
Q4 2017	13,700	$1,295	$93.43	$82.69 - $103.63
Q3 2017	22,000	$2,078	$76.52	$62.45 - $89.48
Q2 2017	22,000	$1,481	$70.74	$60.40 - $82.65
Q1 2017	21,900	$1,506	$61.31	$54.85 - $65.67
Q4 2016	21,500	$1,277	$50.13	$43.15 - $57.04
Q3 2016	23,700	$1,179	$43.66	$38.22 - $50.60
Q2 2016	23,600	$1,016	$35.80	$32.24 - $39.81
Q1 2016	23,600	$889	$31.35	$28.08 - $35.11
Q4 2015	23,500	$846	$32.52	$26.43 - $35.02
Q3 2015	23,500	$788	$31.60	$28.82 - $34.92
Q2 2015	23,700	$899	$32.93	$29.54 - $35.95
Q1 2015	23,300	$788	$31.63	$29.59 - $33.22
Q4 2014	24,300	$889	$31.69	$27.30 - $33.99
Q3 2014	24,400	$814	$29.19	$27.47 - $31.20
Q2 2014	24,900	$778	$25.69	$23.72 - $27.88
Q1 2014	24,700	$738	$26.46	$25.10 - $28.61
Q4 2013	24,600	$736	$25.51	$23.10 - $27.14