MKS Inc. (MKSI) Stock Price History
Historical prices from 1999 to 2026
- 1M
- +37.4%
- 3M
- +74.1%
- YTD
- +141.4%
- 1Y
- +340.9%
- 3Y
- +56.5%
- 5Y
- +19.3%
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
- +45.2%
MKSI Stock Price Trajectory (1999–2026)
As of June 21, 2026, MKS Inc. (MKSI) trades at $406.37, representing a +340.9% return over the past year. The stock has delivered a +143.9% total return over five years (+19.3% CAGR), reflecting significant long-term value creation.
The stock reached its all-time high of $408.68 on June 18, 2026. From this peak, MKSI has corrected -0.6%, currently trading 93% above its 200-day moving average, indicating continued institutional support.
When compared to Technology sector peers ENTG (+134.5% 1Y), ICHR (+464.8% 1Y), and ONTO (+244.2% 1Y), MKSI has underperformed the peer group average. Compare MKSI vs ENTG →
MKSI Historical Price Data · from 1999
Rows 1–50 of 6,849| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-06-18 | 386.56 | 408.68 | 382.00 | 406.37 | 2.03M | +9.46% |
| 2026-06-17 | 382.11 | 386.01 | 370.00 | 371.26 | 1.17M | +1.35% |
| 2026-06-16 | 375.00 | 379.99 | 365.48 | 366.31 | 1.05M | -2.40% |
| 2026-06-15 | 369.92 | 377.66 | 367.88 | 375.32 | 294K | +5.52% |
| 2026-06-12 | 345.28 | 359.35 | 341.45 | 355.69 | 865K | +3.00% |
| 2026-06-11 | 326.74 | 347.27 | 326.10 | 345.32 | 994K | +9.25% |
| 2026-06-10 | 317.42 | 333.69 | 310.27 | 316.07 | 1.10M | -1.52% |
| 2026-06-09 | 320.44 | 332.00 | 298.00 | 320.96 | 1.21M | +2.84% |
| 2026-06-08 | 314.99 | 339.92 | 309.00 | 312.09 | 1.10M | +3.46% |
| 2026-06-05 | 313.99 | 318.23 | 300.29 | 301.65 | 925K | -8.65% |
| 2026-06-04 | 322.83 | 335.83 | 318.01 | 330.23 | 657K | -1.47% |
| 2026-06-03 | 334.80 | 341.81 | 326.81 | 335.15 | 711K | +1.14% |
| 2026-06-02 | 324.36 | 334.49 | 320.38 | 331.36 | 1.12M | +4.33% |
| 2026-06-01 | 318.27 | 319.31 | 309.46 | 317.62 | 1.02M | -2.05% |
| 2026-05-29 | 325.99 | 329.58 | 317.16 | 324.26 | 1.17M | +0.26% |
| 2026-05-28 | 326.48 | 330.25 | 316.35 | 323.41 | 1.10M | -1.40% |
| 2026-05-27 | 338.56 | 339.00 | 321.44 | 328.01 | 817K | -1.83% |
| 2026-05-26 | 330.50 | 334.80 | 326.45 | 334.11 | 856K | +4.21% |
| 2026-05-22 | 316.00 | 322.00 | 311.75 | 320.62 | 808K | +2.38% |
| 2026-05-21 | 312.62 | 314.04 | 307.37 | 313.16 | 1.34M | +0.53% |
| 2026-05-20 | 302.00 | 312.74 | 300.40 | 311.51 | 1.09M | +5.94% |
| 2026-05-19 | 290.00 | 294.20 | 280.83 | 294.04 | 1.44M | -0.56% |
| 2026-05-18 | 314.51 | 315.12 | 290.00 | 295.70 | 1.44M | -2.46% |
| 2026-05-15 | 301.43 | 304.71 | 295.25 | 303.17 | 1.15M | -3.39% |
| 2026-05-14 | 316.50 | 317.43 | 308.86 | 313.81 | 971K | -1.10% |
| 2026-05-13 | 318.99 | 321.40 | 311.66 | 317.31 | 915K | +1.79% |
| 2026-05-12 | 312.78 | 312.78 | 298.15 | 311.72 | 1.36M | -2.50% |
| 2026-05-11 | 314.97 | 321.65 | 313.47 | 319.71 | 1.21M | +2.08% |
| 2026-05-08 | 318.70 | 324.41 | 308.83 | 313.21 | 1.71M | +4.13% |
| 2026-05-07 | 315.93 | 326.83 | 295.77 | 300.79 | 2.30M | +2.39% |
| 2026-05-06 | 292.52 | 294.92 | 280.50 | 293.77 | 1.82M | +2.13% |
| 2026-05-05 | 297.02 | 298.00 | 280.18 | 287.65 | 1.52M | -1.33% |
| 2026-05-04 | 280.47 | 292.11 | 277.55 | 291.53 | 1.82M | +4.35% |
| 2026-05-01 | 282.98 | 285.67 | 275.04 | 279.38 | 1.28M | -1.54% |
| 2026-04-30 | 270.18 | 284.09 | 263.73 | 283.75 | 1.18M | +6.90% |
| 2026-04-29 | 273.88 | 278.91 | 261.23 | 265.44 | 670K | -0.92% |
| 2026-04-28 | 268.88 | 277.00 | 264.45 | 267.90 | 1.03M | -3.76% |
| 2026-04-27 | 282.57 | 283.61 | 267.94 | 278.36 | 814K | -0.93% |
| 2026-04-24 | 290.00 | 294.00 | 279.38 | 280.98 | 804K | +0.15% |
| 2026-04-23 | 280.28 | 287.00 | 272.97 | 280.56 | 980K | +0.76% |
| 2026-04-22 | 280.97 | 281.98 | 266.85 | 278.45 | 1.65M | +1.71% |
| 2026-04-21 | 282.50 | 288.65 | 271.19 | 273.77 | 941K | -2.20% |
| 2026-04-20 | 279.01 | 285.82 | 278.00 | 279.93 | 932K | +0.48% |
| 2026-04-17 | 277.54 | 281.77 | 275.00 | 278.59 | 936K | +3.22% |
| 2026-04-16 | 268.00 | 272.50 | 263.00 | 269.89 | 1.36M | +0.33% |
| 2026-04-15 | 269.57 | 272.92 | 261.89 | 269.00 | 783K | -1.88% |
| 2026-04-14 | 277.05 | 277.94 | 271.40 | 274.15 | 991K | +0.36% |
| 2026-04-13 | 267.49 | 273.55 | 265.28 | 273.18 | 560K | +1.64% |
| 2026-04-10 | 268.26 | 272.71 | 266.00 | 268.77 | 767K | +2.10% |
| 2026-04-09 | 255.22 | 267.06 | 255.22 | 263.25 | 1.06M | +2.83% |
Full Stock Analysis
Deep dive into MKSI consensus models and risk factors.
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
10-year return with dividends reinvested.
DCA Calculator
See how regular investing compounds over time.
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 +340.9% over the past year, beating its 5-year annualized CAGR of +19.3%. The stock trades above its 200-day moving average, confirming the uptrend.
What is MKSI's all-time high price?
MKS Inc. reached $408.68 on 2026-06-18. The 52-week high is $408.68. Current 1-year return of +340.9% 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.