MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

UBS ASSET MANAGEMENT AMERICAS INC's Holding History (CIK: 0000861177)

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

Q4 2025

Shares 200,179 Value ($000) $31,989 Avg Close $148.21 Range $120.73 - $170.37

Q3 2025

Shares 206,435 Value ($000) $25,550 Avg Close $106.31 Range $88.17 - $132.24

Q2 2025

Shares 321,712 Value ($000) $31,965 Avg Close $80.86 Range $54.50 - $100.44

Q1 2025

Shares 267,421 Value ($000) $21,434 Avg Close $100.21 Range $75.89 - $124.28

Q4 2024

Shares 258,251 Value ($000) $26,959 Avg Close $106.91 Range $96.54 - $118.37

Q3 2024

Shares 214,145 Value ($000) $23,280 Avg Close $117.45 Range $99.10 - $145.63

Q2 2024

Shares 259,987 Value ($000) $33,949 Avg Close $124.55 Range $105.72 - $137.52

Q1 2024

Shares 177,497 Value ($000) $23,607 Avg Close $114.51 Range $94.23 - $132.85

Q4 2023

Shares 96,799 Value ($000) $9,958 Avg Close $79.84 Range $62.28 - $104.49

Q3 2023

Shares 134,764 Value ($000) $11,662 Avg Close $95.58 Range $81.25 - $107.67

Q2 2023

Shares 371,849 Value ($000) $32,953 Avg Close $89.53 Range $77.81 - $108.20

Q1 2023

Shares 371,849 Value ($000) $32,953 Avg Close $93.12 Range $80.00 - $111.27

Q4 2022

Shares 95,360 Value ($000) $8,080 Avg Close $78.00 Range $62.97 - $89.22

Q3 2022

Shares 87,332 Value ($000) $7,217,116 Avg Close $100.01 Range $79.23 - $120.27

Q2 2022

Shares 100,998 Value ($000) $10,365,425 Avg Close $112.92 Range $94.75 - $148.07

Q1 2022

Shares 93,684 Value ($000) $14,052,600 Avg Close $150.35 Range $131.30 - $175.09

Q4 2021

Shares 90,779 Value ($000) $15,810,979 Avg Close $151.09 Range $136.06 - $172.80

Q3 2021

Shares 96,542 Value ($000) $14,569,153 Avg Close $148.13 Range $133.76 - $168.78

Q2 2021

Shares 96,319 Value ($000) $17,139,967 Avg Close $175.09 Range $158.98 - $192.11

Q1 2021

Shares 93,655 Value ($000) $17,365,511 Avg Close $161.78 Range $138.78 - $185.00

Q4 2020

Shares 89,505 Value ($000) $13,466,026 Avg Close $125.75 Range $101.82 - $152.08

Q3 2020

Shares 65,006 Value ($000) $7,100,606 Avg Close $112.47 Range $97.77 - $124.64

Q2 2020

Shares 64,139 Value ($000) $7,263,100 Avg Close $95.31 Range $70.45 - $112.06

Q1 2020

Shares 95,806 Value ($000) $7,803,398 Avg Close $97.84 Range $64.00 - $116.86

Q4 2019

Shares 75,508 Value ($000) $8,306,635 Avg Close $99.99 Range $81.07 - $109.78

Q3 2019

Shares 73,825 Value ($000) $6,812,571 Avg Close $78.64 Range $68.69 - $91.29

Q2 2019

Shares 70,259 Value ($000) $5,472,474 Avg Close $80.27 Range $67.03 - $98.53

Q1 2019

Shares 71,575 Value ($000) $6,660,055 Avg Close $76.40 Range $59.36 - $88.91

Q4 2018

Shares 60,974 Value ($000) $3,939,531 Avg Close $68.31 Range $53.35 - $77.61

Q3 2018

Shares 75,465 Value ($000) $6,048,520 Avg Close $86.11 Range $74.38 - $97.19

Q2 2018

Shares 74,993 Value ($000) $7,176,830 Avg Close $102.60 Range $86.55 - $115.42

Q1 2018

Shares 44,127 Value ($000) $5,103,288 Avg Close $103.13 Range $88.32 - $120.60

Q4 2017

Shares 38,592 Value ($000) $3,646,945 Avg Close $93.43 Range $82.69 - $103.63

Q3 2017

Shares 41,511 Value ($000) $3,920,715 Avg Close $76.52 Range $62.45 - $89.48

Q2 2017

Shares 41,633 Value ($000) $2,801,901 Avg Close $70.74 Range $60.40 - $82.65

Q1 2017

Shares 42,264 Value ($000) $2,905,651 Avg Close $61.31 Range $54.85 - $65.67

Q4 2016

Shares 49,514 Value ($000) $2,942 Avg Close $50.13 Range $43.15 - $57.04

Q3 2016

Shares 56,837 Value ($000) $2,827 Avg Close $43.66 Range $38.22 - $50.60

Q2 2016

Shares 56,856 Value ($000) $2,449 Avg Close $35.80 Range $32.24 - $39.81

Q1 2016

Shares 32,750 Value ($000) $1,233 Avg Close $31.35 Range $28.08 - $35.11

Q4 2015

Shares 40,409 Value ($000) $1,455 Avg Close $32.52 Range $26.43 - $35.02

Q3 2015

Shares 40,399 Value ($000) $1,355 Avg Close $31.60 Range $28.82 - $34.92

Q2 2015

Shares 26,598 Value ($000) $1,009 Avg Close $32.93 Range $29.54 - $35.95

Q1 2015

Shares 24,298 Value ($000) $822 Avg Close $31.63 Range $29.59 - $33.22

Q4 2014

Shares 23,398 Value ($000) $856 Avg Close $31.69 Range $27.30 - $33.99

Q3 2014

Shares 22,398 Value ($000) $748 Avg Close $29.19 Range $27.47 - $31.20

Q2 2014

Shares 22,398 Value ($000) $700 Avg Close $25.69 Range $23.72 - $27.88

Q1 2014

Shares 22,398 Value ($000) $669 Avg Close $26.46 Range $25.10 - $28.61

Q4 2013

Shares 16,998 Value ($000) $509 Avg Close $25.51 Range $23.10 - $27.14

Q3 2013

Shares 16,998 Value ($000) $452 Avg Close $23.28 Range $21.63 - $25.20

Q2 2013

Shares 16,998 Value ($000) $451 Avg Close $23.45 Range $21.31 - $25.25

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	200,179	$31,989	$148.21	$120.73 - $170.37
Q3 2025	206,435	$25,550	$106.31	$88.17 - $132.24
Q2 2025	321,712	$31,965	$80.86	$54.50 - $100.44
Q1 2025	267,421	$21,434	$100.21	$75.89 - $124.28
Q4 2024	258,251	$26,959	$106.91	$96.54 - $118.37
Q3 2024	214,145	$23,280	$117.45	$99.10 - $145.63
Q2 2024	259,987	$33,949	$124.55	$105.72 - $137.52
Q1 2024	177,497	$23,607	$114.51	$94.23 - $132.85
Q4 2023	96,799	$9,958	$79.84	$62.28 - $104.49
Q3 2023	134,764	$11,662	$95.58	$81.25 - $107.67
Q2 2023	371,849	$32,953	$89.53	$77.81 - $108.20
Q1 2023	371,849	$32,953	$93.12	$80.00 - $111.27
Q4 2022	95,360	$8,080	$78.00	$62.97 - $89.22
Q3 2022	87,332	$7,217,116	$100.01	$79.23 - $120.27
Q2 2022	100,998	$10,365,425	$112.92	$94.75 - $148.07
Q1 2022	93,684	$14,052,600	$150.35	$131.30 - $175.09
Q4 2021	90,779	$15,810,979	$151.09	$136.06 - $172.80
Q3 2021	96,542	$14,569,153	$148.13	$133.76 - $168.78
Q2 2021	96,319	$17,139,967	$175.09	$158.98 - $192.11
Q1 2021	93,655	$17,365,511	$161.78	$138.78 - $185.00
Q4 2020	89,505	$13,466,026	$125.75	$101.82 - $152.08
Q3 2020	65,006	$7,100,606	$112.47	$97.77 - $124.64
Q2 2020	64,139	$7,263,100	$95.31	$70.45 - $112.06
Q1 2020	95,806	$7,803,398	$97.84	$64.00 - $116.86
Q4 2019	75,508	$8,306,635	$99.99	$81.07 - $109.78
Q3 2019	73,825	$6,812,571	$78.64	$68.69 - $91.29
Q2 2019	70,259	$5,472,474	$80.27	$67.03 - $98.53
Q1 2019	71,575	$6,660,055	$76.40	$59.36 - $88.91
Q4 2018	60,974	$3,939,531	$68.31	$53.35 - $77.61
Q3 2018	75,465	$6,048,520	$86.11	$74.38 - $97.19
Q2 2018	74,993	$7,176,830	$102.60	$86.55 - $115.42
Q1 2018	44,127	$5,103,288	$103.13	$88.32 - $120.60
Q4 2017	38,592	$3,646,945	$93.43	$82.69 - $103.63
Q3 2017	41,511	$3,920,715	$76.52	$62.45 - $89.48
Q2 2017	41,633	$2,801,901	$70.74	$60.40 - $82.65
Q1 2017	42,264	$2,905,651	$61.31	$54.85 - $65.67
Q4 2016	49,514	$2,942	$50.13	$43.15 - $57.04
Q3 2016	56,837	$2,827	$43.66	$38.22 - $50.60
Q2 2016	56,856	$2,449	$35.80	$32.24 - $39.81
Q1 2016	32,750	$1,233	$31.35	$28.08 - $35.11
Q4 2015	40,409	$1,455	$32.52	$26.43 - $35.02
Q3 2015	40,399	$1,355	$31.60	$28.82 - $34.92
Q2 2015	26,598	$1,009	$32.93	$29.54 - $35.95
Q1 2015	24,298	$822	$31.63	$29.59 - $33.22
Q4 2014	23,398	$856	$31.69	$27.30 - $33.99
Q3 2014	22,398	$748	$29.19	$27.47 - $31.20
Q2 2014	22,398	$700	$25.69	$23.72 - $27.88
Q1 2014	22,398	$669	$26.46	$25.10 - $28.61
Q4 2013	16,998	$509	$25.51	$23.10 - $27.14
Q3 2013	16,998	$452	$23.28	$21.63 - $25.20
Q2 2013	16,998	$451	$23.45	$21.31 - $25.25