MKS Inc. (MKSI) Stock Price History
Historical prices from 1999 to 2026
- 1M
- -31.7%
- 3M
- -34.0%
- YTD
- +14.2%
- 1Y
- +23.8%
- 3Y
- +41.5%
- 5Y
- +3.9%
Loading 10-year price history...
MKSI Historical Performance
MKSI Annual Returns
Year-by-year price performance · 2002–2026
- 2002 annual price return
- -39.8%
- 2003 annual price return
- +71.9%
- 2004 annual price return
- -35.8%
- 2005 annual price return
- -1.9%
- 2006 annual price return
- +21.7%
- 2007 annual price return
- -15.3%
- 2008 annual price return
- -20.7%
- 2009 annual price return
- +14.2%
- 2010 annual price return
- +37.4%
- 2011 annual price return
- +10.9%
- 2012 annual price return
- -8.3%
- 2013 annual price return
- +11.3%
- 2014 annual price return
- +22.6%
- 2015 annual price return
- -0.8%
- 2016 annual price return
- +66.7%
- 2017 annual price return
- +57.9%
- 2018 annual price return
- -34.1%
- 2019 annual price return
- +66.4%
- 2020 annual price return
- +34.5%
- 2021 annual price return
- +15.9%
- 2022 annual price return
- -52.3%
- 2023 annual price return
- +21.5%
- 2024 annual price return
- +4.6%
- 2025 annual price return
- +50.7%
- 2026 annual price return
- +57.1%
MKSI Stock Price Trajectory (1999–2026)
As of November 7, 2026, MKS Inc. (MKSI) trades at $192.27, representing a +23.8% return over the past year. The stock has delivered a +23.9% total return over five years (+3.9% CAGR), reflecting significant long-term value creation.
The stock reached its all-time high of $447.62 on June 30, 2026. From this peak, MKSI has corrected -57.0%, currently trading 31% below its 200-day moving average, suggesting potential weakness.
When compared to Technology sector peers ENTG (+49.3% 1Y), ICHR (+105.2% 1Y), and ONTO (+31.5% 1Y), MKSI has underperformed the peer group average. Compare MKSI vs ENTG →
MKSI Historical Price Data · from 1999
Rows 1–50 of 6,946| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-11-06 | 196.25 | 196.25 | 184.22 | 192.27 | 2.62M | +8.74% |
| 2026-11-05 | 190.03 | 194.90 | 173.13 | 176.82 | 3.48M | -9.30% |
| 2026-11-04 | 200.20 | 204.79 | 190.55 | 194.95 | 2.50M | -4.99% |
| 2026-11-03 | 205.35 | 213.41 | 202.90 | 205.18 | 1.66M | +4.40% |
| 2026-11-02 | 204.31 | 207.87 | 195.71 | 196.54 | 1.29M | -2.72% |
| 2026-10-30 | 200.99 | 206.85 | 196.20 | 202.04 | 1.38M | -6.54% |
| 2026-10-29 | 216.67 | 222.30 | 214.50 | 216.17 | 770K | -0.95% |
| 2026-10-28 | 218.68 | 220.41 | 214.35 | 218.24 | 973K | +2.87% |
| 2026-10-27 | 206.78 | 212.71 | 204.09 | 212.16 | 1.01M | +4.88% |
| 2026-10-26 | 198.75 | 205.33 | 197.03 | 202.28 | 1.05M | +2.92% |
| 2026-10-23 | 193.99 | 200.19 | 192.01 | 196.55 | 1.15M | +0.22% |
| 2026-10-22 | 204.01 | 205.18 | 193.21 | 196.11 | 2.56M | -9.25% |
| 2026-10-21 | 220.69 | 220.69 | 213.19 | 216.10 | 1.35M | +2.35% |
| 2026-10-20 | 210.57 | 216.82 | 205.62 | 211.14 | 1.16M | -1.98% |
| 2026-10-19 | 221.51 | 223.49 | 215.09 | 215.41 | 1.35M | +0.27% |
| 2026-10-16 | 224.40 | 225.79 | 213.95 | 214.83 | 1.60M | -5.99% |
| 2026-10-15 | 224.32 | 230.57 | 212.35 | 228.52 | 2.57M | -2.55% |
| 2026-10-14 | 241.02 | 244.54 | 232.20 | 234.50 | 1.68M | -5.28% |
| 2026-10-13 | 242.35 | 249.52 | 238.14 | 247.56 | 1.69M | -0.94% |
| 2026-10-12 | 261.18 | 261.18 | 249.81 | 249.91 | 1.37M | -5.52% |
| 2026-10-09 | 266.09 | 267.96 | 256.65 | 264.50 | 636K | +1.58% |
| 2026-10-08 | 266.69 | 274.07 | 257.60 | 260.38 | 1.28M | -4.68% |
| 2026-10-07 | 271.72 | 274.99 | 269.11 | 273.15 | 1.01M | -2.94% |
| 2026-10-06 | 285.40 | 286.38 | 276.56 | 281.41 | 1.06M | +0.32% |
| 2026-10-05 | 279.79 | 284.21 | 273.60 | 280.50 | 1.13M | +0.48% |
| 2026-10-02 | 284.10 | 284.63 | 278.91 | 279.15 | 1.35M | +2.92% |
| 2026-10-01 | 265.57 | 275.48 | 262.77 | 271.24 | 1.34M | +2.22% |
| 2026-09-30 | 267.82 | 268.00 | 260.23 | 265.36 | 751K | -0.25% |
| 2026-09-29 | 264.18 | 266.28 | 261.36 | 266.02 | 808K | +2.96% |
| 2026-09-28 | 259.56 | 259.69 | 251.19 | 258.38 | 1.10M | -0.94% |
| 2026-09-25 | 261.01 | 262.66 | 257.90 | 260.82 | 683K | +1.10% |
| 2026-09-24 | 256.64 | 259.82 | 254.21 | 257.98 | 695K | -1.80% |
| 2026-09-23 | 260.37 | 263.78 | 253.41 | 262.72 | 1.53M | +0.90% |
| 2026-09-22 | 253.50 | 260.66 | 252.60 | 260.37 | 2.71M | +1.34% |
| 2026-09-21 | 258.20 | 259.00 | 251.79 | 256.92 | 948K | +1.92% |
| 2026-09-18 | 244.03 | 252.38 | 243.00 | 252.08 | 2.23M | +4.93% |
| 2026-09-17 | 245.50 | 250.84 | 238.45 | 240.23 | 1.03M | +2.10% |
| 2026-09-16 | 237.80 | 240.48 | 232.03 | 235.28 | 960K | +1.63% |
| 2026-09-15 | 242.60 | 242.60 | 228.46 | 231.50 | 1.63M | -3.25% |
| 2026-09-14 | 248.32 | 250.49 | 238.29 | 239.27 | 1.18M | -10.49% |
| 2026-09-11 | 267.86 | 270.29 | 264.74 | 267.31 | 1.25M | +2.09% |
| 2026-09-10 | 260.83 | 265.60 | 258.79 | 261.84 | 961K | -2.32% |
| 2026-09-09 | 262.34 | 269.78 | 262.34 | 268.05 | 1.20M | +0.96% |
| 2026-09-08 | 264.06 | 270.17 | 260.35 | 265.50 | 1.75M | +1.99% |
| 2026-09-04 | 255.14 | 260.94 | 253.97 | 260.31 | 1.69M | +4.27% |
| 2026-09-03 | 247.10 | 250.78 | 241.51 | 249.65 | 1.14M | -0.69% |
| 2026-09-02 | 247.30 | 252.98 | 245.90 | 251.38 | 1.09M | +2.00% |
| 2026-09-01 | 250.96 | 252.09 | 243.72 | 246.44 | 1.64M | -3.82% |
| 2026-08-31 | 258.38 | 259.38 | 254.48 | 256.24 | 978K | +0.19% |
| 2026-08-28 | 268.08 | 269.36 | 255.14 | 255.76 | 1.41M | -5.62% |
MKSI Chart Terminal
Live VCP patterns, Cup & Handle overlays, support/resistance, and AI trade plans.
Live Breakouts Feed
High-probability breakout stocks crossing their pivot across 5 pattern engines.
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
10-year return with dividends reinvested.
Peer Comparison
Compare growth, multiples, and margins vs sector.
MKSI — Frequently Asked Questions
Quick answers to the most common questions about buying MKSI stock.
How has MKSI stock performed recently?
MKSI returned +23.8% over the past year, beating its 5-year annualized CAGR of +3.9%. The stock trades below its 200-day moving average, confirming the uptrend.
What is MKSI's all-time high price?
MKS Inc. reached $447.62 on 2026-06-30. The 52-week high is $447.62. Current 1-year return of +23.8% places the stock closer to historical peaks.
Where can I download MKSI historical price data?
This page provides MKSI daily OHLCV data with 50-day MA, 200-day MA, and RSI indicators. Data spans 1999-2026, downloadable in CSV format.