MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

O'SHAUGHNESSY ASSET MANAGEMENT, LLC's Holding History (CIK: 0001423442)

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

Q4 2025

Shares 2,417 Value ($000) $386 Avg Close $148.21 Range $120.73 - $170.37

Q3 2021

Shares 30 Value ($000) $5 Avg Close $148.13 Range $133.76 - $168.78

Q2 2021

Shares 32 Value ($000) $6 Avg Close $175.09 Range $158.98 - $192.11

Q1 2021

Shares 8 Value ($000) $1 Avg Close $161.78 Range $138.78 - $185.00

Q4 2020

Shares 8 Value ($000) $1 Avg Close $125.75 Range $101.82 - $152.08

Q2 2020

Shares 2 Value ($000) $0 Avg Close $95.31 Range $70.45 - $112.06

Q1 2020

Shares 11 Value ($000) $1 Avg Close $97.84 Range $64.00 - $116.86

Q4 2019

Shares 306 Value ($000) $34 Avg Close $99.99 Range $81.07 - $109.78

Q3 2019

Shares 18 Value ($000) $2 Avg Close $78.64 Range $68.69 - $91.29

Q2 2019

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

Q1 2019

Shares 2,384 Value ($000) $221 Avg Close $76.40 Range $59.36 - $88.91

Q4 2018

Shares 3,086 Value ($000) $200 Avg Close $68.31 Range $53.35 - $77.61

Q3 2018

Shares 13,860 Value ($000) $1,108 Avg Close $86.11 Range $74.38 - $97.19

Q2 2018

Shares 15,357 Value ($000) $1,467 Avg Close $102.60 Range $86.55 - $115.42

Q1 2018

Shares 16,275 Value ($000) $1,882 Avg Close $103.13 Range $88.32 - $120.60

Q4 2017

Shares 11,033 Value ($000) $1,043 Avg Close $93.43 Range $82.69 - $103.63

Q2 2017

Shares 981 Value ($000) $66 Avg Close $70.74 Range $60.40 - $82.65

Q1 2017

Shares 1,045 Value ($000) $72 Avg Close $61.31 Range $54.85 - $65.67

Q4 2016

Shares 1,054 Value ($000) $63 Avg Close $50.13 Range $43.15 - $57.04

Q3 2016

Shares 4,229 Value ($000) $210 Avg Close $43.66 Range $38.22 - $50.60

Q3 2015

Shares 50,161 Value ($000) $1,682 Avg Close $31.60 Range $28.82 - $34.92

Q2 2015

Shares 65,774 Value ($000) $2,495 Avg Close $32.93 Range $29.54 - $35.95

Q1 2015

Shares 65,786 Value ($000) $2,221 Avg Close $31.63 Range $29.59 - $33.22

Q4 2014

Shares 59,282 Value ($000) $2,156 Avg Close $31.69 Range $27.30 - $33.99

Q3 2014

Shares 13,004 Value ($000) $433 Avg Close $29.19 Range $27.47 - $31.20

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,417	$386	$148.21	$120.73 - $170.37
Q3 2021	30	$5	$148.13	$133.76 - $168.78
Q2 2021	32	$6	$175.09	$158.98 - $192.11
Q1 2021	8	$1	$161.78	$138.78 - $185.00
Q4 2020	8	$1	$125.75	$101.82 - $152.08
Q2 2020	2	$0	$95.31	$70.45 - $112.06
Q1 2020	11	$1	$97.84	$64.00 - $116.86
Q4 2019	306	$34	$99.99	$81.07 - $109.78
Q3 2019	18	$2	$78.64	$68.69 - $91.29
Q2 2019	13	$1	$80.27	$67.03 - $98.53
Q1 2019	2,384	$221	$76.40	$59.36 - $88.91
Q4 2018	3,086	$200	$68.31	$53.35 - $77.61
Q3 2018	13,860	$1,108	$86.11	$74.38 - $97.19
Q2 2018	15,357	$1,467	$102.60	$86.55 - $115.42
Q1 2018	16,275	$1,882	$103.13	$88.32 - $120.60
Q4 2017	11,033	$1,043	$93.43	$82.69 - $103.63
Q2 2017	981	$66	$70.74	$60.40 - $82.65
Q1 2017	1,045	$72	$61.31	$54.85 - $65.67
Q4 2016	1,054	$63	$50.13	$43.15 - $57.04
Q3 2016	4,229	$210	$43.66	$38.22 - $50.60
Q3 2015	50,161	$1,682	$31.60	$28.82 - $34.92
Q2 2015	65,774	$2,495	$32.93	$29.54 - $35.95
Q1 2015	65,786	$2,221	$31.63	$29.59 - $33.22
Q4 2014	59,282	$2,156	$31.69	$27.30 - $33.99
Q3 2014	13,004	$433	$29.19	$27.47 - $31.20