MKS Inc. (MKSI)

NasdaqGS • Currently down 3.50 (-1.10%) in today's trading session

1 member of Congress has disclosed 4 trades in MKS Inc. (MKSI) via STOCK Act filings. The most recent disclosure was a sale by Lisa McClain on 31 October 2025. Aggregate disclosed activity totals roughly $16K in purchases and $16K in sales (midpoint estimates from bracketed disclosure amounts).

MKS Inc. is currently trading at $313.81, positioned at 95% of its 52-week range ($80.22 – $326.84).

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Current Price
$313.81
24h Change
-3.50 (-1.10%)
52 Week Range
$80.22—$326.84
View on NASDAQ

MKS Inc. Price History and Technical Analysis

Interactive Chart

Congressional Trading Activity for MKSI

Select to highlight on chart
4 transactions
Compliance: 100%
Lisa McClain31 Oct 202521 Nov 2025SaleStock$1,001 - $15,000N/A
Lisa McClain30 Oct 202521 Nov 2025PurchaseStock$1,001 - $15,000+121.93%
Lisa McClain30 Oct 202521 Nov 2025SaleStock$1,001 - $15,000N/A
Lisa McClain4 Aug 202512 Sept 2025PurchaseStock$1,001 - $15,000+233.84%

Select transactions to view their annotations on the chart

Stock Overview

Market Data

Market Cap

$21.2B

Volume

984.03K

Beta

1.97

P/E Ratio

64.70

Fundamentals

EPS

$4.85

Div. Yield

0.29%

Open

$316.50

Day Range

$308.86 — $317.43

Company Information

Sector
Technology
Industry
Hardware, Equipment & Parts
Exchange
NASDAQ · USD
Country
US
CEO
John T. C. Lee
IPO Date
1999-03-30
Website
www.mksinst.com

MKS Inc. provides instruments, systems, subsystems, and process control solutions that measure, monitor, deliver, analyze, power, and control critical parameters of manufacturing processes worldwide. Its Vacuum & Analysis segment offers pressure and...

Earnings

Next Report

Q2 2026

5 Aug

EPS Est.

$2.95

Rev. Est.

$1.2B

Days Until

82

Recent Quarters

Q1 20266 May
EPS$2.30
Beat 15.0%
Q4 202517 Feb
EPS$2.47
Beat 0.4%
Q3 20255 Nov
EPS$1.93
Beat 4.3%
Q2 20256 Aug
EPS$1.77
Beat 9.9%
Q1 20257 May
EPS$1.71
Beat 20.4%
Q4 202412 Feb
EPS$2.15
Beat 12.0%
Q3 20247 Nov
EPS$1.72
Beat 18.6%
Q2 20247 Aug
EPS$1.53
Beat 50.0%
Q1 20248 May
EPS$1.18
Beat 57.8%
Q4 20237 Feb
EPS$1.17
Beat 31.5%
Q3 20231 Nov
EPS$1.46
Beat 46.0%
Q2 20232 Aug
EPS$1.32
Beat 15.8%
Q1 20233 May
EPS$0.48
Beat 271.4%
Q4 202227 Feb
EPS$2.00
Beat 52.7%
Q3 20222 Nov
EPS$2.74
Beat 15.1%
Q2 202227 Jul
EPS$2.59
Beat 12.1%
Q1 202226 Apr
EPS$2.71
Beat 3.8%
Q4 202126 Jan
EPS$3.02
Beat 5.6%
Q3 202127 Oct
EPS$2.79
Beat 0.7%
Q2 202128 Jul
EPS$3.02
Beat 2.4%
Q1 202126 Apr
EPS$2.56
Beat 16.4%
Q4 202027 Jan
EPS$2.34
Beat 15.8%
Q3 202027 Oct
EPS$1.93
Beat 8.4%
Q2 202029 Jul
EPS$1.62
Beat 37.3%
Q1 202028 Apr
EPS$1.54
Beat 24.2%
Q4 201928 Jan
EPS$1.20
Beat 13.2%
Q3 201923 Oct
EPS$1.12
Beat 30.2%
Q2 201930 Jul
EPS$1.09
Beat 0.9%
Q1 201929 Apr
EPS$1.12
Beat 4.7%
Q4 201829 Jan
EPS$1.54
Beat 2.0%
Q3 201823 Oct
EPS$1.88
Beat 9.3%
Q2 201824 Jul
EPS$2.33
Beat 5.0%
Q1 201824 Apr
EPS$2.07
Beat 3.5%
Q4 201731 Jan
EPS$1.71
Beat 4.9%
Q3 201724 Oct
EPS$1.56
Beat 6.8%
Q2 201725 Jul
EPS$1.41
Beat 0.0%
Q1 201726 Apr
EPS$1.27
Beat 16.5%
Q4 20162 Feb
EPS$1.05
Beat 5.0%
Q3 201626 Oct
EPS$0.88
Beat 12.8%
Q2 201627 Jul
EPS$0.72
Beat 50.0%
Q1 201625 Apr
EPS$0.38
Beat 15.2%
Q4 201527 Jan
EPS$0.34
Beat 25.9%
Q3 201521 Oct
EPS$0.59
Beat 5.4%
Q2 201522 Jul
EPS$0.62
Beat 1.6%
Q1 201522 Apr
EPS$0.66
Beat 24.5%
Q4 201428 Jan
EPS$0.54
Beat 14.9%
Q3 201422 Oct
EPS$0.43
Beat 19.4%
Q2 201423 Jul
EPS$0.42
Beat 50.0%
Q1 201423 Apr
EPS$0.51
Beat 21.4%
Q4 201329 Jan
EPS$0.40
Beat 11.1%
Q3 201323 Oct
EPS$0.25
Beat 25.0%
Q2 201324 Jul
EPS$0.14
Beat 7.7%
Q1 201324 Apr
EPS$0.07
Beat 110.0%
Q4 201230 Jan
EPS$0.10
Q3 201224 Oct
EPS$0.16
Miss 20.0%
Q2 201225 Jul
EPS$0.35
Miss 5.4%
Q1 201225 Apr
EPS$0.43
Beat 13.2%
Q4 20111 Feb
EPS$0.38
Beat 58.3%
Q3 201119 Oct
EPS$0.58
Beat 20.8%
Q2 201120 Jul
EPS$0.73
Beat 15.9%
Q1 201120 Apr
EPS$0.73
Beat 2.8%
Q4 20102 Feb
EPS$0.67
Miss 2.9%
Q3 201020 Oct
EPS$0.72
Beat 4.3%
Q2 201021 Jul
EPS$0.66
Beat 6.5%
Q1 201021 Apr
EPS$0.58
Beat 31.8%
Q4 20093 Feb
EPS$0.31
Beat 244.4%
Q3 200922 Oct
EPS$0.03
Beat 9.1%
Q2 200922 Jul
EPS$-0.19
Beat 26.9%
Q1 200922 Apr
EPS$-0.23
Beat 39.5%
Q4 20084 Feb
EPS$-0.12
Miss 106.5%
Q3 200822 Oct
EPS$0.18
Beat 20.0%
Q2 200824 Jul
EPS$0.21
Miss 16.0%
Q1 200824 Apr
EPS$0.39
Beat 25.8%
Q4 20077 Feb
EPS$0.33
Beat 32.0%
Q3 200725 Oct
EPS$0.38
Beat 26.7%
Q2 200726 Jul
EPS$0.43
Miss 2.3%
Q1 200726 Apr
EPS$0.52
Beat 15.6%
Q4 200615 Feb
EPS$0.47
Beat 6.8%
Q3 200626 Oct
EPS$0.50
Beat 0.0%
Q2 200627 Jul
EPS$0.48
Beat 11.6%
Q1 200627 Apr
EPS$0.35
Beat 25.0%
Q4 200516 Feb
EPS$0.22
Beat 37.5%
Q3 200527 Oct
EPS$0.17
Beat 13.3%
Q2 200526 Jul
EPS$0.19
Beat 18.8%
Q1 200526 Apr
EPS$0.15
Beat 50.0%
Q4 200410 Feb
EPS$0.20
Beat 100.0%
Q3 200419 Oct
EPS$0.29
Beat 11.5%
Q2 200420 Jul
EPS$0.37
Miss 5.1%
Q1 200420 Apr
EPS$0.31
Beat 34.8%
Q4 20033 Feb
EPS$0.11
Beat 37.5%
Q3 200321 Oct
EPS$-0.03
Miss 22.8%
Q2 200322 Jul
EPS$-0.03
Beat 50.0%
Q1 200317 Apr
EPS$-0.07
Beat 12.5%
Q4 20024 Feb
EPS$-0.07
Beat 30.0%
Q3 200216 Oct
EPS$-0.07
Miss 100.0%
Q2 200230 Jul
EPS$-0.09
Miss 53.0%
Q1 200216 Apr
EPS$-0.09
Beat 30.8%
Q4 20015 Feb
EPS$-0.13
Beat 48.0%
Q3 200116 Oct
EPS$-0.15
Beat 6.3%
Q2 200125 Jul
EPS$-0.11
Miss 14.3%
Q1 200124 Apr
EPS$0.24
Miss 4.0%
Q4 20006 Feb
EPS$0.50
Miss 2.0%
Q3 200017 Oct
EPS$0.47
Beat 62.1%
Q2 200018 Jul
EPS$0.43
Beat 7.5%
Q1 200018 Apr
EPS$0.36
Beat 28.6%
Q4 19992 Feb
EPS$0.26
Beat 13.0%
Q3 199920 Oct
EPS$0.22
Beat 37.5%
Q2 199923 Jul
EPS$0.16
Beat 60.0%
Q2 199921 Jul
EPS$0.15
Beat 50.0%

4 politicians traded within 30 days

Dividends

Next Dividend

Ex-Date

3 Jun 2026

Amount

$0.2500 per share

Yield

0.29%

Days Until

19

Pay Date:12 Jun 2026
Record Date:3 Jun 2026
Declared:12 May 2026

Dividend History

23 Feb 2026
Amount $0.2500
24 Nov 2025
Amount $0.2200
25 Aug 2025
Amount $0.2200
27 May 2025
Amount $0.2200
24 Feb 2025
Amount $0.2200
25 Nov 2024
Amount $0.2200
26 Aug 2024
Amount $0.2200
24 May 2024
Amount $0.2200
23 Feb 2024
Amount $0.2200
24 Nov 2023
Amount $0.2200
25 Aug 2023
Amount $0.2200
26 May 2023
Amount $0.2200
24 Feb 2023
Amount $0.2200
25 Nov 2022
Amount $0.2200
5 Aug 2022
Amount $0.2200
26 May 2022
Amount $0.2200
25 Feb 2022
Amount $0.2200
26 Nov 2021
Amount $0.2200
27 Aug 2021
Amount $0.2200
27 May 2021
Amount $0.2200
19 Feb 2021
Amount $0.2000
20 Nov 2020
Amount $0.2000
21 Aug 2020
Amount $0.2000
21 May 2020
Amount $0.2000
21 Feb 2020
Amount $0.2000
22 Nov 2019
Amount $0.2000
23 Aug 2019
Amount $0.2000
23 May 2019
Amount $0.2000
22 Feb 2019
Amount $0.2000
23 Nov 2018
Amount $0.2000
24 Aug 2018
Amount $0.2000
24 May 2018
Amount $0.2000
23 Feb 2018
Amount $0.1800
24 Nov 2017
Amount $0.1800
24 Aug 2017
Amount $0.1750
24 May 2017
Amount $0.1750
23 Feb 2017
Amount $0.1750
23 Nov 2016
Amount $0.1700
25 Aug 2016
Amount $0.1700
25 May 2016
Amount $0.1700
25 Feb 2016
Amount $0.1700
25 Nov 2015
Amount $0.1650
27 Aug 2015
Amount $0.1700
28 May 2015
Amount $0.1700
26 Feb 2015
Amount $0.1650
26 Nov 2014
Amount $0.1650
28 Aug 2014
Amount $0.1650
29 May 2014
Amount $0.1650
27 Feb 2014
Amount $0.1600
27 Nov 2013
Amount $0.1600
28 Aug 2013
Amount $0.1600
30 May 2013
Amount $0.1600
27 Feb 2013
Amount $0.1600
28 Nov 2012
Amount $0.1600
29 Aug 2012
Amount $0.1600
30 May 2012
Amount $0.1500
28 Feb 2012
Amount $0.1500
29 Nov 2011
Amount $0.1500
30 Aug 2011
Amount $0.1500
27 May 2011
Amount $0.1500
25 Feb 2011
Amount $0.1500

No stock split data available for this stock.

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Frequently Asked Questions about MKSI

Which members of Congress have traded MKSI?
1 member of Congress has disclosed 4 trade in MKS Inc. (MKSI) under the STOCK Act: Lisa McClain.
When was MKSI most recently disclosed by Congress?
The most recent MKSI disclosure was a sale by Lisa McClain on 31 October 2025.
What is the total disclosed congressional trading volume for MKSI?
Members of Congress have disclosed approximately $16K in MKSI purchases and $16K in sales. These figures are midpoint estimates derived from the bracketed amount ranges used in STOCK Act filings.
How can I track new congressional trades in MKSI?
This MKSI page updates as soon as new STOCK Act disclosures are filed for MKS Inc.. Every trade, politician, transaction date and amount range is surfaced above, typically within hours of the official filing appearing on the House or Senate disclosure portals.
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This website is an independent, third-party platform. It is not affiliated with, endorsed by, or in any way associated with Nancy Pelosi, her office, or her representatives. Any use of her name is solely for the purpose of discussing publicly available information.The information provided on this website is for informational and educational purposes only and is not intended to serve as, nor should it be construed as, financial or investment advice. The data presented here is sourced from publicly available filings and records. While we strive for accuracy, timeliness, and completeness, we do not guarantee that all information is error-free or current.