MKS Inc. (MKSI)
NASDAQ: MKSI · Real-Time Price · USD
406.37
+35.11 (9.46%)
At close: Jun 18, 2026, 4:00 PM EDT
398.00
-8.37 (-2.06%)
After-hours: Jun 18, 2026, 7:59 PM EDT
MKS Inc. Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Jun 18, 2026 | 386.56 | 408.87 | 382.00 | 406.37 | 406.37 | 9.46% | 2,111,472 |
| Jun 17, 2026 | 383.99 | 386.01 | 369.85 | 371.26 | 371.26 | 1.35% | 1,196,667 |
| Jun 16, 2026 | 375.00 | 379.99 | 365.36 | 366.31 | 366.31 | -2.40% | 1,089,788 |
| Jun 15, 2026 | 367.88 | 377.66 | 367.88 | 375.32 | 375.32 | 5.52% | 915,164 |
| Jun 12, 2026 | 345.32 | 359.35 | 341.45 | 355.69 | 355.69 | 3.00% | 961,425 |
| Jun 11, 2026 | 326.74 | 347.27 | 326.10 | 345.32 | 345.32 | 9.25% | 1,005,552 |
| Jun 10, 2026 | 317.42 | 333.69 | 310.36 | 316.07 | 316.07 | -1.52% | 1,270,123 |
| Jun 9, 2026 | 320.44 | 332.01 | 298.00 | 320.96 | 320.96 | 2.84% | 1,205,404 |
| Jun 8, 2026 | 314.99 | 339.92 | 309.03 | 312.09 | 312.09 | 3.46% | 1,099,657 |
| Jun 5, 2026 | 315.23 | 318.88 | 300.11 | 301.65 | 301.65 | -8.65% | 955,719 |
| Jun 4, 2026 | 321.01 | 335.83 | 318.01 | 330.23 | 330.23 | -1.47% | 679,273 |
| Jun 3, 2026 | 339.40 | 341.81 | 326.81 | 335.15 | 335.15 | 1.22% | 716,706 |
| Jun 2, 2026 | 324.36 | 334.49 | 320.38 | 331.36 | 331.11 | 4.33% | 1,125,569 |
| Jun 1, 2026 | 318.02 | 319.31 | 309.46 | 317.62 | 317.38 | -2.05% | 1,037,103 |
| May 29, 2026 | 325.99 | 329.75 | 317.16 | 324.26 | 324.02 | 0.26% | 1,204,480 |
| May 28, 2026 | 327.41 | 330.26 | 316.35 | 323.41 | 323.17 | -1.40% | 1,106,907 |
| May 27, 2026 | 338.58 | 339.00 | 321.45 | 328.01 | 327.76 | -1.83% | 911,291 |
| May 26, 2026 | 330.50 | 334.80 | 326.45 | 334.11 | 333.86 | 4.21% | 861,070 |
| May 22, 2026 | 315.48 | 322.00 | 311.75 | 320.62 | 320.38 | 2.38% | 835,816 |
| May 21, 2026 | 311.51 | 314.04 | 307.18 | 313.16 | 312.92 | 0.53% | 1,361,932 |
| May 20, 2026 | 302.00 | 312.74 | 300.09 | 311.51 | 311.27 | 5.94% | 1,129,951 |
| May 19, 2026 | 289.56 | 294.27 | 280.83 | 294.04 | 293.82 | -0.56% | 1,495,004 |
| May 18, 2026 | 314.51 | 315.12 | 290.00 | 295.70 | 295.48 | -2.46% | 1,486,353 |
| May 15, 2026 | 301.43 | 304.71 | 295.08 | 303.17 | 302.94 | -3.39% | 1,214,573 |
| May 14, 2026 | 317.31 | 317.43 | 308.51 | 313.81 | 313.57 | -1.10% | 984,259 |
| May 13, 2026 | 318.99 | 321.52 | 311.66 | 317.31 | 317.07 | 1.79% | 923,780 |
| May 12, 2026 | 312.78 | 313.38 | 298.16 | 311.72 | 311.48 | -2.50% | 1,480,108 |
| May 11, 2026 | 313.47 | 321.65 | 313.47 | 319.71 | 319.47 | 2.08% | 1,227,047 |
| May 8, 2026 | 318.70 | 324.42 | 308.83 | 313.21 | 312.97 | 4.13% | 1,736,811 |
| May 7, 2026 | 316.17 | 326.84 | 295.77 | 300.79 | 300.56 | 2.39% | 2,327,555 |
| May 6, 2026 | 294.92 | 294.92 | 280.50 | 293.77 | 293.55 | 2.13% | 2,303,432 |
| May 5, 2026 | 297.02 | 298.00 | 280.18 | 287.65 | 287.43 | -1.33% | 1,537,423 |
| May 4, 2026 | 277.72 | 292.12 | 277.55 | 291.53 | 291.31 | 4.35% | 1,908,899 |
| May 1, 2026 | 282.98 | 285.67 | 275.04 | 279.38 | 279.17 | -1.54% | 1,300,898 |
| Apr 30, 2026 | 270.18 | 284.14 | 263.73 | 283.75 | 283.54 | 6.90% | 1,632,571 |
| Apr 29, 2026 | 273.88 | 278.91 | 261.23 | 265.44 | 265.24 | -0.92% | 796,663 |
| Apr 28, 2026 | 268.88 | 277.00 | 264.45 | 267.90 | 267.70 | -3.76% | 1,078,299 |
| Apr 27, 2026 | 282.57 | 283.61 | 267.94 | 278.36 | 278.15 | -0.93% | 817,585 |
| Apr 24, 2026 | 290.00 | 294.05 | 279.38 | 280.98 | 280.77 | 0.15% | 845,450 |
| Apr 23, 2026 | 280.28 | 287.00 | 272.97 | 280.56 | 280.35 | 0.76% | 1,208,149 |
| Apr 22, 2026 | 280.97 | 282.62 | 266.85 | 278.45 | 278.24 | 1.71% | 1,704,302 |
| Apr 21, 2026 | 283.57 | 289.49 | 271.19 | 273.77 | 273.56 | -2.20% | 957,319 |
| Apr 20, 2026 | 279.01 | 285.82 | 278.00 | 279.93 | 279.72 | 0.48% | 946,469 |
| Apr 17, 2026 | 277.17 | 281.77 | 275.00 | 278.59 | 278.38 | 3.22% | 947,849 |
| Apr 16, 2026 | 267.92 | 272.51 | 263.00 | 269.89 | 269.69 | 0.33% | 1,372,385 |
| Apr 15, 2026 | 269.57 | 272.92 | 261.89 | 269.00 | 268.80 | -1.88% | 784,452 |
| Apr 14, 2026 | 275.97 | 277.94 | 269.95 | 274.15 | 273.94 | 0.36% | 1,001,709 |
| Apr 13, 2026 | 266.65 | 273.55 | 265.28 | 273.18 | 272.97 | 1.64% | 561,128 |
| Apr 10, 2026 | 268.26 | 272.71 | 266.00 | 268.77 | 268.57 | 2.10% | 789,057 |
| Apr 9, 2026 | 255.22 | 267.07 | 255.22 | 263.25 | 263.05 | 2.83% | 1,058,552 |