Monolithic Power Systems, Inc. (MPWR)
NASDAQ: MPWR · Real-Time Price · USD
1,234.46
+48.38 (4.08%)
At close: Sep 11, 2026, 4:00 PM EDT
1,238.95
+4.49 (0.36%)
After-hours: Sep 11, 2026, 7:58 PM EDT
Monolithic Power Systems Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Sep 11, 2026 | 1,200.80 | 1,241.04 | 1,194.47 | 1,234.46 | 1,234.46 | 4.08% | 555,115 |
| Sep 10, 2026 | 1,184.85 | 1,205.20 | 1,175.95 | 1,186.08 | 1,186.08 | -1.47% | 625,369 |
| Sep 9, 2026 | 1,206.70 | 1,228.82 | 1,198.17 | 1,203.75 | 1,203.75 | -1.21% | 508,493 |
| Sep 8, 2026 | 1,230.64 | 1,243.09 | 1,211.22 | 1,218.50 | 1,218.50 | -0.44% | 763,467 |
| Sep 4, 2026 | 1,239.13 | 1,239.13 | 1,206.55 | 1,223.86 | 1,223.86 | 0.84% | 625,898 |
| Sep 3, 2026 | 1,200.70 | 1,225.00 | 1,189.49 | 1,213.65 | 1,213.65 | -0.47% | 413,703 |
| Sep 2, 2026 | 1,224.92 | 1,245.23 | 1,211.74 | 1,219.36 | 1,219.36 | -0.54% | 405,205 |
| Sep 1, 2026 | 1,245.11 | 1,250.00 | 1,211.86 | 1,225.96 | 1,225.96 | -3.30% | 758,060 |
| Aug 31, 2026 | 1,261.90 | 1,279.00 | 1,253.00 | 1,267.77 | 1,267.77 | 0.92% | 689,203 |
| Aug 28, 2026 | 1,306.03 | 1,306.03 | 1,254.01 | 1,256.26 | 1,256.26 | -4.18% | 709,349 |
| Aug 27, 2026 | 1,319.75 | 1,332.00 | 1,290.86 | 1,311.08 | 1,311.08 | 0.55% | 459,325 |
| Aug 26, 2026 | 1,301.04 | 1,311.02 | 1,284.56 | 1,303.88 | 1,303.88 | -0.02% | 255,715 |
| Aug 25, 2026 | 1,310.06 | 1,322.99 | 1,291.54 | 1,304.15 | 1,304.15 | 1.49% | 359,622 |
| Aug 24, 2026 | 1,298.38 | 1,305.64 | 1,255.56 | 1,285.03 | 1,285.03 | -2.37% | 897,888 |
| Aug 21, 2026 | 1,321.13 | 1,337.70 | 1,297.30 | 1,316.28 | 1,316.28 | 0.43% | 529,769 |
| Aug 20, 2026 | 1,311.34 | 1,327.00 | 1,295.02 | 1,310.60 | 1,310.60 | 0.80% | 437,133 |
| Aug 19, 2026 | 1,321.12 | 1,335.19 | 1,267.77 | 1,300.14 | 1,300.14 | -2.48% | 710,871 |
| Aug 18, 2026 | 1,365.45 | 1,376.53 | 1,303.22 | 1,333.18 | 1,333.18 | -5.85% | 1,144,286 |
| Aug 17, 2026 | 1,418.01 | 1,448.76 | 1,411.60 | 1,415.99 | 1,415.99 | 1.00% | 542,867 |
| Aug 14, 2026 | 1,360.00 | 1,404.14 | 1,355.11 | 1,402.01 | 1,402.01 | 2.90% | 440,360 |
| Aug 13, 2026 | 1,421.44 | 1,438.38 | 1,358.00 | 1,362.55 | 1,362.55 | -4.38% | 506,489 |
| Aug 12, 2026 | 1,451.18 | 1,464.99 | 1,423.10 | 1,425.01 | 1,425.01 | 1.63% | 623,143 |
| Aug 11, 2026 | 1,413.78 | 1,431.63 | 1,383.63 | 1,402.11 | 1,402.11 | 1.52% | 413,747 |
| Aug 10, 2026 | 1,428.22 | 1,430.00 | 1,379.17 | 1,381.10 | 1,381.10 | -1.46% | 493,700 |
| Aug 7, 2026 | 1,385.97 | 1,417.09 | 1,370.95 | 1,401.54 | 1,401.54 | 3.12% | 605,861 |
| Aug 6, 2026 | 1,313.25 | 1,415.37 | 1,305.13 | 1,359.08 | 1,359.08 | 1.01% | 629,598 |
| Aug 5, 2026 | 1,320.01 | 1,358.61 | 1,308.46 | 1,345.46 | 1,345.46 | 0.78% | 705,010 |
| Aug 4, 2026 | 1,402.10 | 1,425.99 | 1,333.32 | 1,335.03 | 1,335.03 | -0.69% | 1,228,391 |
| Aug 3, 2026 | 1,417.78 | 1,421.61 | 1,305.01 | 1,344.37 | 1,344.37 | -5.73% | 1,215,536 |
| Jul 31, 2026 | 1,499.00 | 1,568.21 | 1,405.96 | 1,426.03 | 1,426.03 | 8.35% | 1,545,868 |
| Jul 30, 2026 | 1,290.97 | 1,339.99 | 1,290.63 | 1,316.18 | 1,316.18 | 5.40% | 1,722,563 |
| Jul 29, 2026 | 1,263.27 | 1,327.31 | 1,240.02 | 1,248.76 | 1,248.76 | -2.59% | 1,183,857 |
| Jul 28, 2026 | 1,283.77 | 1,313.74 | 1,253.70 | 1,282.01 | 1,282.01 | -4.26% | 1,008,074 |
| Jul 27, 2026 | 1,340.00 | 1,364.85 | 1,284.82 | 1,339.08 | 1,339.08 | 0.40% | 848,886 |
| Jul 24, 2026 | 1,373.81 | 1,385.74 | 1,318.72 | 1,333.81 | 1,333.81 | -4.53% | 805,477 |
| Jul 23, 2026 | 1,359.81 | 1,409.99 | 1,359.59 | 1,397.15 | 1,397.15 | -0.09% | 702,965 |
| Jul 22, 2026 | 1,353.93 | 1,419.92 | 1,350.49 | 1,398.45 | 1,398.45 | 1.10% | 607,536 |
| Jul 21, 2026 | 1,385.82 | 1,396.00 | 1,364.62 | 1,383.26 | 1,383.26 | 4.10% | 986,535 |
| Jul 20, 2026 | 1,332.96 | 1,371.16 | 1,323.75 | 1,328.80 | 1,328.80 | 1.28% | 784,931 |
| Jul 17, 2026 | 1,245.79 | 1,342.81 | 1,231.00 | 1,312.00 | 1,312.00 | 0.49% | 1,054,963 |
| Jul 16, 2026 | 1,318.03 | 1,332.44 | 1,284.21 | 1,305.65 | 1,305.65 | -3.48% | 933,528 |
| Jul 15, 2026 | 1,406.04 | 1,406.04 | 1,310.12 | 1,352.66 | 1,352.66 | -1.73% | 754,052 |
| Jul 14, 2026 | 1,367.68 | 1,401.29 | 1,345.01 | 1,376.41 | 1,376.41 | 6.58% | 786,153 |
| Jul 13, 2026 | 1,307.17 | 1,317.79 | 1,277.64 | 1,291.38 | 1,291.38 | -4.54% | 827,268 |
| Jul 10, 2026 | 1,335.76 | 1,364.03 | 1,316.21 | 1,352.74 | 1,352.74 | -1.56% | 577,563 |
| Jul 9, 2026 | 1,399.20 | 1,407.09 | 1,360.33 | 1,374.13 | 1,374.13 | 4.46% | 886,483 |
| Jul 8, 2026 | 1,264.23 | 1,329.16 | 1,260.57 | 1,315.51 | 1,315.51 | 3.35% | 703,381 |
| Jul 7, 2026 | 1,274.59 | 1,299.30 | 1,232.04 | 1,272.81 | 1,272.81 | -5.45% | 1,210,126 |
| Jul 6, 2026 | 1,325.74 | 1,371.37 | 1,305.01 | 1,346.13 | 1,346.13 | 4.50% | 857,610 |
| Jul 2, 2026 | 1,332.85 | 1,382.92 | 1,258.66 | 1,288.16 | 1,288.16 | -3.27% | 1,214,807 |