MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

Public Sector Pension Investment Board's Holding History (CIK: 0001396318)

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

Q3 2021

Shares 2,525 Value ($000) $381 Avg Close $148.13 Range $133.76 - $168.78

Q4 2018

Shares 65,800 Value ($000) $4,251 Avg Close $68.31 Range $53.35 - $77.61

Q3 2018

Shares 49,900 Value ($000) $3,999 Avg Close $86.11 Range $74.38 - $97.19

Q2 2018

Shares 12,900 Value ($000) $1,235 Avg Close $102.60 Range $86.55 - $115.42

Q4 2017

Shares 13,466 Value ($000) $1,273 Avg Close $93.43 Range $82.69 - $103.63

Q3 2017

Shares 34,138 Value ($000) $3,224 Avg Close $76.52 Range $62.45 - $89.48

Q2 2017

Shares 27,772 Value ($000) $1,869 Avg Close $70.74 Range $60.40 - $82.65

Q1 2017

Shares 38,872 Value ($000) $2,672 Avg Close $61.31 Range $54.85 - $65.67

Q4 2016

Shares 38,172 Value ($000) $2,267 Avg Close $50.13 Range $43.15 - $57.04

Q3 2016

Shares 37,472 Value ($000) $1,863 Avg Close $43.66 Range $38.22 - $50.60

Q2 2016

Shares 37,472 Value ($000) $1,614 Avg Close $35.80 Range $32.24 - $39.81

Q1 2016

Shares 37,472 Value ($000) $1,411 Avg Close $31.35 Range $28.08 - $35.11

Q4 2015

Shares 37,472 Value ($000) $1,349 Avg Close $32.52 Range $26.43 - $35.02

Q3 2015

Shares 58,772 Value ($000) $1,971 Avg Close $31.60 Range $28.82 - $34.92

Q2 2015

Shares 82,472 Value ($000) $3,129 Avg Close $32.93 Range $29.54 - $35.95

Q1 2015

Shares 100,072 Value ($000) $3,383 Avg Close $31.63 Range $29.59 - $33.22

Q4 2014

Shares 99,514 Value ($000) $3,642 Avg Close $31.69 Range $27.30 - $33.99

Q3 2014

Shares 99,514 Value ($000) $3,322 Avg Close $29.19 Range $27.47 - $31.20

Q2 2014

Shares 117,214 Value ($000) $3,662 Avg Close $25.69 Range $23.72 - $27.88

Q1 2014

Shares 107,770 Value ($000) $3,221 Avg Close $26.46 Range $25.10 - $28.61

Q4 2013

Shares 129,570 Value ($000) $3,879 Avg Close $25.51 Range $23.10 - $27.14

Q3 2013

Shares 128,470 Value ($000) $3,416 Avg Close $23.28 Range $21.63 - $25.20

Q2 2013

Shares 100,370 Value ($000) $2,664 Avg Close $23.45 Range $21.31 - $25.25

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2021	2,525	$381	$148.13	$133.76 - $168.78
Q4 2018	65,800	$4,251	$68.31	$53.35 - $77.61
Q3 2018	49,900	$3,999	$86.11	$74.38 - $97.19
Q2 2018	12,900	$1,235	$102.60	$86.55 - $115.42
Q4 2017	13,466	$1,273	$93.43	$82.69 - $103.63
Q3 2017	34,138	$3,224	$76.52	$62.45 - $89.48
Q2 2017	27,772	$1,869	$70.74	$60.40 - $82.65
Q1 2017	38,872	$2,672	$61.31	$54.85 - $65.67
Q4 2016	38,172	$2,267	$50.13	$43.15 - $57.04
Q3 2016	37,472	$1,863	$43.66	$38.22 - $50.60
Q2 2016	37,472	$1,614	$35.80	$32.24 - $39.81
Q1 2016	37,472	$1,411	$31.35	$28.08 - $35.11
Q4 2015	37,472	$1,349	$32.52	$26.43 - $35.02
Q3 2015	58,772	$1,971	$31.60	$28.82 - $34.92
Q2 2015	82,472	$3,129	$32.93	$29.54 - $35.95
Q1 2015	100,072	$3,383	$31.63	$29.59 - $33.22
Q4 2014	99,514	$3,642	$31.69	$27.30 - $33.99
Q3 2014	99,514	$3,322	$29.19	$27.47 - $31.20
Q2 2014	117,214	$3,662	$25.69	$23.72 - $27.88
Q1 2014	107,770	$3,221	$26.46	$25.10 - $28.61
Q4 2013	129,570	$3,879	$25.51	$23.10 - $27.14
Q3 2013	128,470	$3,416	$23.28	$21.63 - $25.20
Q2 2013	100,370	$2,664	$23.45	$21.31 - $25.25