MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

TWO SIGMA INVESTMENTS, LP's Holding History (CIK: 0001179392)

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

Q4 2025

Shares 29,358 Value ($000) $4,691 Avg Close $148.21 Range $120.73 - $170.37

Q3 2025

Shares 6,200 Value ($000) $767 Avg Close $106.31 Range $88.17 - $132.24

Q2 2025

Shares 4,800 Value ($000) $477 Avg Close $80.86 Range $54.50 - $100.44

Q4 2024

Shares 42,200 Value ($000) $4,405 Avg Close $106.91 Range $96.54 - $118.37

Q2 2024

Shares 5,000 Value ($000) $653 Avg Close $124.55 Range $105.72 - $137.52

Q1 2024

Shares 4,300 Value ($000) $572 Avg Close $114.51 Range $94.23 - $132.85

Q4 2023

Shares 34,180 Value ($000) $3,516 Avg Close $79.84 Range $62.28 - $104.49

Q3 2023

Shares 128,675 Value ($000) $11,136 Avg Close $95.58 Range $81.25 - $107.67

Q2 2023

Shares 15,800 Value ($000) $1,708 Avg Close $89.53 Range $77.81 - $108.20

Q1 2023

Shares 123,481 Value ($000) $10,943 Avg Close $93.12 Range $80.00 - $111.27

Q4 2022

Shares 160,122 Value ($000) $13,567 Avg Close $78.00 Range $62.97 - $89.22

Q2 2022

Shares 105,763 Value ($000) $10,854 Avg Close $112.92 Range $94.75 - $148.07

Q4 2021

Shares 2,577 Value ($000) $449 Avg Close $151.09 Range $136.06 - $172.80

Q3 2021

Shares 184,015 Value ($000) $27,770 Avg Close $148.13 Range $133.76 - $168.78

Q3 2020

Shares 8,829 Value ($000) $964 Avg Close $112.47 Range $97.77 - $124.64

Q4 2018

Shares 243,721 Value ($000) $15,747 Avg Close $68.31 Range $53.35 - $77.61

Q3 2018

Shares 55,469 Value ($000) $4,446 Avg Close $86.11 Range $74.38 - $97.19

Q2 2016

Shares 76,372 Value ($000) $3,289 Avg Close $35.80 Range $32.24 - $39.81

Q3 2015

Shares 39,073 Value ($000) $1,310 Avg Close $31.60 Range $28.82 - $34.92

Q2 2015

Shares 48,486 Value ($000) $1,840 Avg Close $32.93 Range $29.54 - $35.95

Q1 2015

Shares 133,931 Value ($000) $4,528 Avg Close $31.63 Range $29.59 - $33.22

Q4 2014

Shares 138,998 Value ($000) $5,087 Avg Close $31.69 Range $27.30 - $33.99

Q3 2014

Shares 46,172 Value ($000) $1,541 Avg Close $29.19 Range $27.47 - $31.20

Q2 2014

Shares 42,816 Value ($000) $1,338 Avg Close $25.69 Range $23.72 - $27.88

Q1 2014

Shares 17,855 Value ($000) $533 Avg Close $26.46 Range $25.10 - $28.61

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	29,358	$4,691	$148.21	$120.73 - $170.37
Q3 2025	6,200	$767	$106.31	$88.17 - $132.24
Q2 2025	4,800	$477	$80.86	$54.50 - $100.44
Q4 2024	42,200	$4,405	$106.91	$96.54 - $118.37
Q2 2024	5,000	$653	$124.55	$105.72 - $137.52
Q1 2024	4,300	$572	$114.51	$94.23 - $132.85
Q4 2023	34,180	$3,516	$79.84	$62.28 - $104.49
Q3 2023	128,675	$11,136	$95.58	$81.25 - $107.67
Q2 2023	15,800	$1,708	$89.53	$77.81 - $108.20
Q1 2023	123,481	$10,943	$93.12	$80.00 - $111.27
Q4 2022	160,122	$13,567	$78.00	$62.97 - $89.22
Q2 2022	105,763	$10,854	$112.92	$94.75 - $148.07
Q4 2021	2,577	$449	$151.09	$136.06 - $172.80
Q3 2021	184,015	$27,770	$148.13	$133.76 - $168.78
Q3 2020	8,829	$964	$112.47	$97.77 - $124.64
Q4 2018	243,721	$15,747	$68.31	$53.35 - $77.61
Q3 2018	55,469	$4,446	$86.11	$74.38 - $97.19
Q2 2016	76,372	$3,289	$35.80	$32.24 - $39.81
Q3 2015	39,073	$1,310	$31.60	$28.82 - $34.92
Q2 2015	48,486	$1,840	$32.93	$29.54 - $35.95
Q1 2015	133,931	$4,528	$31.63	$29.59 - $33.22
Q4 2014	138,998	$5,087	$31.69	$27.30 - $33.99
Q3 2014	46,172	$1,541	$29.19	$27.47 - $31.20
Q2 2014	42,816	$1,338	$25.69	$23.72 - $27.88
Q1 2014	17,855	$533	$26.46	$25.10 - $28.61