MKS Inc. (MKSI) Stock Price History
Historical prices from 1999 to 2026
- 1M
- -3.2%
- 3M
- -38.1%
- YTD
- +54.7%
- 1Y
- +103.6%
- 3Y
- +45.5%
- 5Y
- +11.6%
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
- +76.7%
MKSI Stock Price Trajectory (1999–2026)
As of September 23, 2026, MKS Inc. (MKSI) trades at $260.37, representing a +103.6% return over the past year. The stock has delivered a +76.2% total return over five years (+11.6% 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 -41.8%, currently trading 3% below its 200-day moving average, suggesting potential weakness.
When compared to Technology sector peers ENTG (+57.7% 1Y), ICHR (+204.2% 1Y), and ONTO (+118.1% 1Y), MKSI has underperformed the peer group average. Compare MKSI vs ENTG →
MKSI Historical Price Data · from 1999
Rows 1–50 of 6,913| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-09-22 | 253.50 | 260.58 | 252.60 | 260.37 | 1.04M | +1.34% |
| 2026-09-21 | 252.81 | 257.84 | 252.00 | 256.92 | 945K | +1.92% |
| 2026-09-18 | 244.33 | 252.35 | 243.00 | 252.08 | 2.23M | +4.93% |
| 2026-09-17 | 245.50 | 250.84 | 238.79 | 240.23 | 1.03M | +2.10% |
| 2026-09-16 | 237.95 | 240.47 | 232.04 | 235.28 | 960K | +1.63% |
| 2026-09-15 | 242.60 | 242.60 | 228.46 | 231.50 | 1.63M | -3.25% |
| 2026-09-14 | 249.19 | 249.74 | 238.31 | 239.27 | 1.17M | -10.49% |
| 2026-09-11 | 270.00 | 270.18 | 264.25 | 267.31 | 1.25M | +2.09% |
| 2026-09-10 | 260.54 | 265.60 | 258.89 | 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 | 1.63M | +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 | 252.00 | 243.72 | 246.44 | 1.63M | -3.82% |
| 2026-08-31 | 258.38 | 259.38 | 254.48 | 256.24 | 958K | +0.19% |
| 2026-08-28 | 268.08 | 268.08 | 255.14 | 255.76 | 1.40M | -5.62% |
| 2026-08-27 | 279.03 | 281.44 | 268.32 | 270.99 | 792K | -0.28% |
| 2026-08-26 | 266.85 | 275.17 | 266.52 | 271.75 | 1.70M | +0.47% |
| 2026-08-25 | 274.93 | 274.93 | 266.50 | 270.48 | 1.16M | +0.53% |
| 2026-08-24 | 271.50 | 274.00 | 264.54 | 269.06 | 1.88M | -3.60% |
| 2026-08-21 | 282.60 | 285.47 | 274.88 | 279.11 | 928K | -0.98% |
| 2026-08-20 | 280.91 | 284.54 | 274.31 | 281.88 | 1.11M | +0.10% |
| 2026-08-19 | 304.16 | 304.16 | 278.23 | 281.60 | 1.54M | -6.21% |
| 2026-08-18 | 303.87 | 309.14 | 294.68 | 300.24 | 1.43M | -6.39% |
| 2026-08-17 | 315.42 | 325.24 | 313.11 | 320.74 | 1.17M | +3.22% |
| 2026-08-14 | 302.01 | 312.08 | 302.01 | 310.73 | 1.18M | +1.45% |
| 2026-08-13 | 306.99 | 316.39 | 305.56 | 306.29 | 947K | -0.18% |
| 2026-08-12 | 312.90 | 317.00 | 305.55 | 306.83 | 1.21M | +4.23% |
| 2026-08-11 | 299.03 | 300.71 | 290.76 | 294.38 | 699K | +0.69% |
| 2026-08-10 | 304.92 | 309.84 | 292.09 | 292.35 | 1.07M | -4.14% |
| 2026-08-07 | 301.18 | 310.43 | 298.00 | 304.99 | 1.27M | +4.70% |
| 2026-08-06 | 291.02 | 309.67 | 285.58 | 291.31 | 2.84M | -6.96% |
| 2026-08-05 | 319.23 | 329.35 | 311.86 | 313.10 | 2.37M | -2.39% |
| 2026-08-04 | 327.27 | 329.34 | 320.45 | 320.76 | 2.89M | +3.48% |
| 2026-08-03 | 288.31 | 313.46 | 288.31 | 309.98 | 1.40M | +4.21% |
| 2026-07-31 | 310.00 | 314.69 | 294.15 | 297.45 | 1.14M | +1.41% |
| 2026-07-30 | 288.80 | 297.57 | 284.78 | 293.30 | 3.03M | +13.85% |
| 2026-07-29 | 280.97 | 290.51 | 256.16 | 257.61 | 2.51M | -9.71% |
| 2026-07-28 | 296.31 | 296.91 | 277.01 | 285.31 | 1.99M | -9.63% |
| 2026-07-27 | 330.15 | 334.00 | 298.38 | 315.70 | 1.39M | -4.10% |
| 2026-07-24 | 341.09 | 345.13 | 326.08 | 329.18 | 850K | -4.67% |
| 2026-07-23 | 338.49 | 348.43 | 336.74 | 345.30 | 752K | +0.13% |
| 2026-07-22 | 330.74 | 349.02 | 328.43 | 344.84 | 801K | -0.17% |
| 2026-07-21 | 347.28 | 347.45 | 333.72 | 345.44 | 1.11M | +6.53% |
| 2026-07-20 | 330.88 | 338.98 | 322.75 | 324.28 | 813K | -0.13% |
| 2026-07-17 | 315.02 | 330.61 | 307.10 | 324.69 | 1.89M | -2.20% |
| 2026-07-16 | 336.12 | 349.07 | 327.38 | 332.00 | 1.11M | -6.16% |
| 2026-07-15 | 366.49 | 374.12 | 336.76 | 353.80 | 1.40M | -1.29% |
| 2026-07-14 | 373.21 | 373.21 | 353.20 | 358.43 | 829K | +1.82% |
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 +103.6% over the past year, beating its 5-year annualized CAGR of +11.6%. 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 +103.6% 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.