MKS Inc. (MKSI) Stock Price History
Historical prices from 2011 to 2026
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MKSI Historical Performance
Short-Term Returns
MKSI Stock Price Trajectory (2011–2026)
As of May 6, 2026, MKS Inc. (MKSI) trades at $287.65, representing a +286.3% return over the past year. The stock has delivered a +65.5% total return over five years (+10.3% CAGR), reflecting significant long-term value creation.
The stock reached its all-time high of $298.00 on May 5, 2026. From this peak, MKSI has corrected -3.5%, currently trading 63% above its 200-day moving average, indicating continued institutional support.
When compared to Technology sector peers ENTG (+78.0% 1Y), ICHR (+225.2% 1Y), and ONTO (+145.2% 1Y), MKSI has outperformed the peer group average. Compare MKSI vs ENTG →
MKSI Historical Price Data (2011–2026)
Showing 30 of 3,650 records| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 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% |
| 2026-04-08 | 258.79 | 260.32 | 250.00 | 256.01 | 1.49M | +7.49% |
| 2026-04-07 | 236.29 | 241.45 | 232.92 | 238.17 | 655K | +0.50% |
| 2026-04-06 | 236.11 | 240.82 | 233.12 | 236.98 | 491K | +0.99% |
| 2026-04-02 | 227.17 | 240.85 | 222.42 | 234.66 | 880K | -0.55% |
| 2026-04-01 | 234.57 | 240.00 | 233.62 | 235.96 | 993K | +2.68% |
| 2026-03-31 | 217.46 | 231.16 | 215.00 | 229.81 | 1.20M | +9.19% |
| 2026-03-30 | 227.97 | 227.97 | 208.47 | 210.47 | 1.22M | -5.69% |
| 2026-03-27 | 223.52 | 228.57 | 221.16 | 223.18 | 679K | -0.86% |
| 2026-03-26 | 237.01 | 238.47 | 224.04 | 225.12 | 1.10M | -7.62% |
| 2026-03-25 | 244.64 | 245.70 | 236.00 | 243.68 | 728K | +0.05% |
| 2026-03-24 | 231.49 | 247.90 | 229.08 | 243.56 | 864K | +3.63% |
Full MKSI Stock Analysis
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View ValuationCompare MKSI vs NVDA
Side-by-side business, growth, and profitability comparison vs NVIDIA Corporation.
Start ComparisonMKSI — Frequently Asked Questions
Quick answers to the most common questions about buying MKSI stock.
How has MKSI stock performed recently?
MKSI returned +286.3% over the past year, beating its 5-year annualized CAGR of +10.3%. The stock trades above its 200-day moving average, confirming the uptrend.
What is MKSI's all-time high price?
MKS Inc. reached $298.00 on 2026-05-05. The 52-week high is $298.00. Current 1-year return of +286.3% 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 2011-2026, downloadable in CSV format.