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MKS Inc (MKSI) stock

MKSINasdaqIndustrial Instruments For Measurement, Display, and ControlFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 6, 2026Score 14/307% below fair value
$202.04−14.13 (-6.54%)

Close on Oct 30, 2026Market cap $13.66BP/E 32.3Yield 0.44%

Price history

MKS share prices for every week, newest first. Adjusted for stock splits, not for dividends.

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Close, Oct 30, 2026
$202.04
-6.54% on the day
52-week range
$134.74 – $447.62
-54.9% from the high
Change over 52 weeks
+45.0%
From $139.31 on Oct 30, 2025
Average volume
1.40M
Shares a day, last 90 sessions
Week ofOpenHighLowCloseChangeVolume
Oct 26, 2026$198.75$222.30$196.20$202.04+2.79%5,190,430
Oct 19, 2026$221.51$223.49$192.01$196.55-8.51%7,570,360
Oct 12, 2026$261.18$261.18$212.35$214.83-18.78%8,901,469
Oct 5, 2026$279.79$286.38$256.65$264.50-5.25%5,107,360
Sep 28, 2026$259.56$284.63$251.19$279.15+7.03%5,340,364
Sep 21, 2026$258.20$263.78$251.79$260.82+3.47%6,570,915
Sep 14, 2026$248.32$252.38$228.46$252.08-5.70%7,026,303
Sep 8, 2026$264.06$270.29$258.79$267.31+2.69%5,163,742
Aug 31, 2026$258.38$260.94$241.51$260.31+1.78%6,538,270
Aug 24, 2026$271.50$282.56$255.14$255.76-8.37%6,945,169
Aug 17, 2026$315.42$325.24$274.31$279.11-10.18%6,176,014
Aug 10, 2026$304.92$317.00$290.76$310.73+1.88%5,103,574
Aug 3, 2026$288.31$329.35$285.58$304.99+2.53%10,773,083
Jul 27, 2026$330.15$334.00$256.16$297.45-9.64%10,062,644
Jul 20, 2026$330.88$349.02$322.75$329.18+1.38%4,322,531
Jul 13, 2026$352.51$374.12$307.10$324.69-11.91%6,089,253
Jul 6, 2026$375.84$385.58$329.01$368.58+0.83%6,512,485
Jun 29, 2026$393.18$447.62$355.08$365.56-5.93%8,040,588
Jun 22, 2026$413.50$421.58$376.83$388.61-4.37%9,456,375
Jun 15, 2026$367.88$408.87$365.36$406.37+14.25%5,329,268
Jun 8, 2026$314.99$359.35$298.00$355.69+17.91%5,542,161
Jun 1, 2026$318.02$341.81$300.11$301.65-6.97%4,514,370
May 26, 2026$330.50$339.00$316.35$324.26+1.14%4,083,748
May 18, 2026$314.51$322.00$280.83$320.62+5.76%6,309,056
May 11, 2026$313.47$321.65$295.08$303.17-3.21%5,829,767
May 4, 2026$277.72$326.84$277.55$313.21+12.11%9,814,120
Apr 27, 2026$282.57$285.67$261.23$279.38-0.57%5,626,016
Apr 20, 2026$279.01$294.05$266.85$280.98+0.86%5,661,689
Apr 13, 2026$266.65$281.77$261.89$278.59+3.65%4,667,523
Apr 6, 2026$236.11$272.71$232.92$268.77+14.54%4,752,347
Mar 30, 2026$227.97$241.11$208.47$234.66+5.14%4,386,232
Mar 23, 2026$234.87$247.90$221.16$223.18-1.74%4,294,189
Mar 16, 2026$218.99$239.36$217.92$227.13+6.41%7,234,040
Mar 9, 2026$203.88$233.42$200.50$213.45+1.64%6,608,918
Mar 2, 2026$239.44$246.98$208.95$210.00-14.10%6,731,365
Feb 23, 2026$258.98$260.68$237.91$244.46-5.71%7,354,715
Feb 17, 2026$257.68$269.91$242.20$259.27-0.56%9,927,505
Feb 9, 2026$241.71$266.08$239.36$260.74+7.32%8,221,420
Feb 2, 2026$231.71$244.06$212.91$242.96+3.21%11,158,550
Jan 26, 2026$217.73$246.35$215.17$235.41+8.45%10,338,803
Jan 20, 2026$200.44$233.11$200.00$217.06+6.41%6,960,462
Jan 12, 2026$183.40$211.08$183.40$203.99+9.62%6,247,958
Jan 5, 2026$172.05$186.71$170.76$186.08+10.53%3,927,824
Dec 29, 2025$162.04$169.54$159.56$168.36+2.54%2,167,876
Dec 22, 2025$162.49$164.87$160.00$164.19+2.90%2,030,438
Dec 15, 2025$159.26$161.08$146.90$159.56+2.43%5,680,622
Dec 8, 2025$164.82$170.37$153.12$155.77-4.40%4,704,139
Dec 1, 2025$155.96$165.95$154.00$162.94+4.19%4,537,323
Nov 24, 2025$144.00$156.49$144.00$156.39+8.60%2,417,806
Nov 17, 2025$141.16$149.47$134.74$144.00+0.88%4,578,312
Nov 10, 2025$158.50$160.18$138.36$142.74-7.79%5,022,513
Nov 3, 2025$143.93$157.23$136.95$154.80+7.72%7,273,435

Seasonality

MKSI return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average11.5%0.4%-0.5%-0.9%6.7%3.4%0.8%-5.6%-0.3%-1.8%8.1%3.3%
Months up8 of 105 of 105 of 103 of 109 of 106 of 105 of 101 of 105 of 103 of 107 of 97 of 9
202647.3%3.9%-6.0%23.5%14.3%37.3%-33.1%-13.8%3.6%-23.9%
20258.5%-18.8%-12.7%-12.5%17.5%20.9%-4.2%8.8%19.8%16.1%9.0%2.2%
20243.5%15.5%8.3%-10.5%6.6%3.2%-3.6%-5.1%-8.8%-8.6%14.6%-8.1%
202320.8%-5.0%-8.6%-5.4%16.3%11.1%1.0%-8.0%-13.7%-24.1%26.1%24.6%
2022-10.8%-2.9%-0.4%-24.0%8.6%-16.9%15.2%-15.6%-17.0%-0.6%2.4%1.0%
20215.1%4.5%12.4%-3.4%5.2%-5.5%-12.1%-5.8%2.5%-0.6%1.5%14.5%
2020-4.7%-4.3%-18.7%23.1%5.6%7.2%12.5%-6.1%-8.6%-0.8%27.5%9.0%
201926.3%1.8%12.3%-2.2%-21.3%9.0%9.3%-7.8%17.9%17.3%-1.6%3.5%
20188.3%9.0%3.9%-11.5%9.8%-14.7%-1.5%-1.3%-13.7%-8.1%6.8%-17.7%
201710.9%-0.2%4.8%13.8%4.7%-17.7%24.3%-1.3%14.7%15.0%-13.1%0.2%