MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

Swiss National Bank's Holding History (CIK: 0001582202)

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

Q4 2025

Shares 132,500 Value ($000) $21,174 Avg Close $148.21 Range $120.73 - $170.37

Q3 2025

Shares 130,000 Value ($000) $16,090 Avg Close $106.31 Range $88.17 - $132.24

Q2 2025

Shares 128,800 Value ($000) $12,798 Avg Close $80.86 Range $54.50 - $100.44

Q1 2025

Shares 130,400 Value ($000) $10,452 Avg Close $100.21 Range $75.89 - $124.28

Q4 2024

Shares 132,300 Value ($000) $13,811 Avg Close $106.91 Range $96.54 - $118.37

Q3 2024

Shares 131,300 Value ($000) $14,274 Avg Close $117.45 Range $99.10 - $145.63

Q2 2024

Shares 131,900 Value ($000) $17,224 Avg Close $124.55 Range $105.72 - $137.52

Q1 2024

Shares 125,400 Value ($000) $16,678 Avg Close $114.51 Range $94.23 - $132.85

Q4 2023

Shares 125,200 Value ($000) $12,879 Avg Close $79.84 Range $62.28 - $104.49

Q3 2023

Shares 132,100 Value ($000) $11,432 Avg Close $95.58 Range $81.25 - $107.67

Q2 2023

Shares 130,600 Value ($000) $14,118 Avg Close $89.53 Range $77.81 - $108.20

Q1 2023

Shares 129,200 Value ($000) $11,450 Avg Close $93.12 Range $80.00 - $111.27

Q4 2022

Shares 144,500 Value ($000) $12,243 Avg Close $78.00 Range $62.97 - $89.22

Q3 2022

Shares 141,700 Value ($000) $11,710 Avg Close $100.01 Range $79.23 - $120.27

Q2 2022

Shares 130,800 Value ($000) $13,424 Avg Close $112.92 Range $94.75 - $148.07

Q1 2022

Shares 131,100 Value ($000) $19,665 Avg Close $150.35 Range $131.30 - $175.09

Q4 2021

Shares 122,100 Value ($000) $21,266 Avg Close $151.09 Range $136.06 - $172.80

Q3 2021

Shares 122,300 Value ($000) $18,456 Avg Close $148.13 Range $133.76 - $168.78

Q2 2021

Shares 121,700 Value ($000) $21,657 Avg Close $175.09 Range $158.98 - $192.11

Q1 2021

Shares 126,000 Value ($000) $23,363 Avg Close $161.78 Range $138.78 - $185.00

Q4 2020

Shares 124,600 Value ($000) $18,746 Avg Close $125.75 Range $101.82 - $152.08

Q3 2020

Shares 124,600 Value ($000) $13,610 Avg Close $112.47 Range $97.77 - $124.64

Q2 2020

Shares 121,700 Value ($000) $13,781 Avg Close $95.31 Range $70.45 - $112.06

Q1 2020

Shares 105,700 Value ($000) $8,609 Avg Close $97.84 Range $64.00 - $116.86

Q4 2019

Shares 104,200 Value ($000) $11,463 Avg Close $99.99 Range $81.07 - $109.78

Q3 2019

Shares 102,400 Value ($000) $9,449 Avg Close $78.64 Range $68.69 - $91.29

Q2 2019

Shares 100,900 Value ($000) $7,859 Avg Close $80.27 Range $67.03 - $98.53

Q1 2019

Shares 98,300 Value ($000) $9,147 Avg Close $76.40 Range $59.36 - $88.91

Q4 2018

Shares 96,900 Value ($000) $6,261 Avg Close $68.31 Range $53.35 - $77.61

Q3 2018

Shares 95,300 Value ($000) $7,638 Avg Close $86.11 Range $74.38 - $97.19

Q2 2018

Shares 95,300 Value ($000) $9,120 Avg Close $102.60 Range $86.55 - $115.42

Q1 2018

Shares 94,400 Value ($000) $10,917 Avg Close $103.13 Range $88.32 - $120.60

Q4 2017

Shares 92,400 Value ($000) $8,732 Avg Close $93.43 Range $82.69 - $103.63

Q3 2017

Shares 89,800 Value ($000) $8,482 Avg Close $76.52 Range $62.45 - $89.48

Q2 2017

Shares 89,800 Value ($000) $6,044 Avg Close $70.74 Range $60.40 - $82.65

Q1 2017

Shares 88,700 Value ($000) $6,098 Avg Close $61.31 Range $54.85 - $65.67

Q4 2016

Shares 88,100 Value ($000) $5,233 Avg Close $50.13 Range $43.15 - $57.04

Q3 2016

Shares 86,400 Value ($000) $4,297 Avg Close $43.66 Range $38.22 - $50.60

Q2 2016

Shares 86,400 Value ($000) $3,720 Avg Close $35.80 Range $32.24 - $39.81

Q1 2016

Shares 86,400 Value ($000) $3,138 Avg Close $31.35 Range $28.08 - $35.11

Q4 2015

Shares 69,200 Value ($000) $2,491 Avg Close $32.52 Range $26.43 - $35.02

Q3 2015

Shares 69,200 Value ($000) $2,320 Avg Close $31.60 Range $28.82 - $34.92

Q2 2015

Shares 60,100 Value ($000) $2,280 Avg Close $32.93 Range $29.54 - $35.95

Q1 2015

Shares 59,000 Value ($000) $1,995 Avg Close $31.63 Range $29.59 - $33.22

Q4 2014

Shares 58,300 Value ($000) $2,134 Avg Close $31.69 Range $27.30 - $33.99

Q3 2014

Shares 57,400 Value ($000) $1,916 Avg Close $29.19 Range $27.47 - $31.20

Q2 2014

Shares 58,500 Value ($000) $1,828 Avg Close $25.69 Range $23.72 - $27.88

Q1 2014

Shares 58,500 Value ($000) $1,749 Avg Close $26.46 Range $25.10 - $28.61

Q4 2013

Shares 44,900 Value ($000) $1,344 Avg Close $25.51 Range $23.10 - $27.14

Q3 2013

Shares 44,900 Value ($000) $1,194 Avg Close $23.28 Range $21.63 - $25.20

Q2 2013

Shares 47,200 Value ($000) $1,253 Avg Close $23.45 Range $21.31 - $25.25

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	132,500	$21,174	$148.21	$120.73 - $170.37
Q3 2025	130,000	$16,090	$106.31	$88.17 - $132.24
Q2 2025	128,800	$12,798	$80.86	$54.50 - $100.44
Q1 2025	130,400	$10,452	$100.21	$75.89 - $124.28
Q4 2024	132,300	$13,811	$106.91	$96.54 - $118.37
Q3 2024	131,300	$14,274	$117.45	$99.10 - $145.63
Q2 2024	131,900	$17,224	$124.55	$105.72 - $137.52
Q1 2024	125,400	$16,678	$114.51	$94.23 - $132.85
Q4 2023	125,200	$12,879	$79.84	$62.28 - $104.49
Q3 2023	132,100	$11,432	$95.58	$81.25 - $107.67
Q2 2023	130,600	$14,118	$89.53	$77.81 - $108.20
Q1 2023	129,200	$11,450	$93.12	$80.00 - $111.27
Q4 2022	144,500	$12,243	$78.00	$62.97 - $89.22
Q3 2022	141,700	$11,710	$100.01	$79.23 - $120.27
Q2 2022	130,800	$13,424	$112.92	$94.75 - $148.07
Q1 2022	131,100	$19,665	$150.35	$131.30 - $175.09
Q4 2021	122,100	$21,266	$151.09	$136.06 - $172.80
Q3 2021	122,300	$18,456	$148.13	$133.76 - $168.78
Q2 2021	121,700	$21,657	$175.09	$158.98 - $192.11
Q1 2021	126,000	$23,363	$161.78	$138.78 - $185.00
Q4 2020	124,600	$18,746	$125.75	$101.82 - $152.08
Q3 2020	124,600	$13,610	$112.47	$97.77 - $124.64
Q2 2020	121,700	$13,781	$95.31	$70.45 - $112.06
Q1 2020	105,700	$8,609	$97.84	$64.00 - $116.86
Q4 2019	104,200	$11,463	$99.99	$81.07 - $109.78
Q3 2019	102,400	$9,449	$78.64	$68.69 - $91.29
Q2 2019	100,900	$7,859	$80.27	$67.03 - $98.53
Q1 2019	98,300	$9,147	$76.40	$59.36 - $88.91
Q4 2018	96,900	$6,261	$68.31	$53.35 - $77.61
Q3 2018	95,300	$7,638	$86.11	$74.38 - $97.19
Q2 2018	95,300	$9,120	$102.60	$86.55 - $115.42
Q1 2018	94,400	$10,917	$103.13	$88.32 - $120.60
Q4 2017	92,400	$8,732	$93.43	$82.69 - $103.63
Q3 2017	89,800	$8,482	$76.52	$62.45 - $89.48
Q2 2017	89,800	$6,044	$70.74	$60.40 - $82.65
Q1 2017	88,700	$6,098	$61.31	$54.85 - $65.67
Q4 2016	88,100	$5,233	$50.13	$43.15 - $57.04
Q3 2016	86,400	$4,297	$43.66	$38.22 - $50.60
Q2 2016	86,400	$3,720	$35.80	$32.24 - $39.81
Q1 2016	86,400	$3,138	$31.35	$28.08 - $35.11
Q4 2015	69,200	$2,491	$32.52	$26.43 - $35.02
Q3 2015	69,200	$2,320	$31.60	$28.82 - $34.92
Q2 2015	60,100	$2,280	$32.93	$29.54 - $35.95
Q1 2015	59,000	$1,995	$31.63	$29.59 - $33.22
Q4 2014	58,300	$2,134	$31.69	$27.30 - $33.99
Q3 2014	57,400	$1,916	$29.19	$27.47 - $31.20
Q2 2014	58,500	$1,828	$25.69	$23.72 - $27.88
Q1 2014	58,500	$1,749	$26.46	$25.10 - $28.61
Q4 2013	44,900	$1,344	$25.51	$23.10 - $27.14
Q3 2013	44,900	$1,194	$23.28	$21.63 - $25.20
Q2 2013	47,200	$1,253	$23.45	$21.31 - $25.25