MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

CANADA PENSION PLAN INVESTMENT BOARD's Holding History (CIK: 0001283718)

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

Q4 2025

Shares 35,000 Value ($000) $5,593 Avg Close $148.21 Range $120.73 - $170.37

Q3 2025

Shares 13,600 Value ($000) $1,683 Avg Close $106.31 Range $88.17 - $132.24

Q2 2025

Shares 13,600 Value ($000) $1,351 Avg Close $80.86 Range $54.50 - $100.44

Q1 2025

Shares 27,800 Value ($000) $2,228 Avg Close $100.21 Range $75.89 - $124.28

Q4 2024

Shares 24,700 Value ($000) $2,578 Avg Close $106.91 Range $96.54 - $118.37

Q3 2023

Shares 8,700 Value ($000) $753 Avg Close $95.58 Range $81.25 - $107.67

Q2 2023

Shares 8,200 Value ($000) $886 Avg Close $89.53 Range $77.81 - $108.20

Q4 2022

Shares 100 Value ($000) $8 Avg Close $78.00 Range $62.97 - $89.22

Q3 2022

Shares 5,600 Value ($000) $463 Avg Close $100.01 Range $79.23 - $120.27

Q2 2022

Shares 32,100 Value ($000) $3,294 Avg Close $112.92 Range $94.75 - $148.07

Q1 2022

Shares 900 Value ($000) $135 Avg Close $150.35 Range $131.30 - $175.09

Q2 2021

Shares 572 Value ($000) $102 Avg Close $175.09 Range $158.98 - $192.11

Q1 2021

Shares 2,308 Value ($000) $428 Avg Close $161.78 Range $138.78 - $185.00

Q4 2020

Shares 25,568 Value ($000) $3,847 Avg Close $125.75 Range $101.82 - $152.08

Q3 2020

Shares 2,980 Value ($000) $326 Avg Close $112.47 Range $97.77 - $124.64

Q2 2020

Shares 2,077 Value ($000) $235 Avg Close $95.31 Range $70.45 - $112.06

Q1 2020

Shares 3,378 Value ($000) $275 Avg Close $97.84 Range $64.00 - $116.86

Q4 2019

Shares 7,308 Value ($000) $804 Avg Close $99.99 Range $81.07 - $109.78

Q2 2019

Shares 16,618 Value ($000) $1,294 Avg Close $80.27 Range $67.03 - $98.53

Q1 2019

Shares 80,160 Value ($000) $7,459 Avg Close $76.40 Range $59.36 - $88.91

Q4 2018

Shares 96,300 Value ($000) $6,221 Avg Close $68.31 Range $53.35 - $77.61

Q3 2018

Shares 90,500 Value ($000) $7,254 Avg Close $86.11 Range $74.38 - $97.19

Q2 2018

Shares 35,800 Value ($000) $3,426 Avg Close $102.60 Range $86.55 - $115.42

Q1 2018

Shares 14,000 Value ($000) $1,619 Avg Close $103.13 Range $88.32 - $120.60

Q4 2017

Shares 3,800 Value ($000) $359 Avg Close $93.43 Range $82.69 - $103.63

Q3 2017

Shares 700 Value ($000) $66 Avg Close $76.52 Range $62.45 - $89.48

Q2 2017

Shares 69,000 Value ($000) $4,644 Avg Close $70.74 Range $60.40 - $82.65

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	35,000	$5,593	$148.21	$120.73 - $170.37
Q3 2025	13,600	$1,683	$106.31	$88.17 - $132.24
Q2 2025	13,600	$1,351	$80.86	$54.50 - $100.44
Q1 2025	27,800	$2,228	$100.21	$75.89 - $124.28
Q4 2024	24,700	$2,578	$106.91	$96.54 - $118.37
Q3 2023	8,700	$753	$95.58	$81.25 - $107.67
Q2 2023	8,200	$886	$89.53	$77.81 - $108.20
Q4 2022	100	$8	$78.00	$62.97 - $89.22
Q3 2022	5,600	$463	$100.01	$79.23 - $120.27
Q2 2022	32,100	$3,294	$112.92	$94.75 - $148.07
Q1 2022	900	$135	$150.35	$131.30 - $175.09
Q2 2021	572	$102	$175.09	$158.98 - $192.11
Q1 2021	2,308	$428	$161.78	$138.78 - $185.00
Q4 2020	25,568	$3,847	$125.75	$101.82 - $152.08
Q3 2020	2,980	$326	$112.47	$97.77 - $124.64
Q2 2020	2,077	$235	$95.31	$70.45 - $112.06
Q1 2020	3,378	$275	$97.84	$64.00 - $116.86
Q4 2019	7,308	$804	$99.99	$81.07 - $109.78
Q2 2019	16,618	$1,294	$80.27	$67.03 - $98.53
Q1 2019	80,160	$7,459	$76.40	$59.36 - $88.91
Q4 2018	96,300	$6,221	$68.31	$53.35 - $77.61
Q3 2018	90,500	$7,254	$86.11	$74.38 - $97.19
Q2 2018	35,800	$3,426	$102.60	$86.55 - $115.42
Q1 2018	14,000	$1,619	$103.13	$88.32 - $120.60
Q4 2017	3,800	$359	$93.43	$82.69 - $103.63
Q3 2017	700	$66	$76.52	$62.45 - $89.48
Q2 2017	69,000	$4,644	$70.74	$60.40 - $82.65