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Monolithic Power Systems, Inc. (MPWR)
NASDAQ: MPWR · Real-Time Price · USD
1,167.93
-115.39 (-8.99%)
At close: Oct 22, 2026, 4:00 PM EDT
1,148.50
-19.43 (-1.66%)
After-hours: Oct 22, 2026, 5:10 PM EDT

Monolithic Power Systems Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Oct 22, 20261,227.181,230.421,147.171,167.931,167.93-8.99%1,472,577
Oct 21, 20261,265.581,288.271,259.871,283.321,283.322.77%608,654
Oct 20, 20261,232.851,284.871,222.291,248.741,248.74-0.39%509,359
Oct 19, 20261,255.411,283.591,236.261,253.661,253.663.53%862,339
Oct 16, 20261,223.321,249.001,207.201,210.861,210.86-3.07%835,005
Oct 15, 20261,198.151,260.241,195.001,249.201,249.200.49%991,558
Oct 14, 20261,295.001,300.761,234.361,243.111,243.11-5.79%1,122,509
Oct 13, 20261,294.291,322.401,283.811,319.551,319.550.02%731,793
Oct 12, 20261,365.361,365.361,314.521,319.231,319.23-4.84%870,267
Oct 9, 20261,396.531,401.761,351.261,386.291,386.291.20%433,752
Oct 8, 20261,405.991,416.621,349.391,369.801,369.80-3.94%848,188
Oct 7, 20261,447.641,450.711,412.681,425.981,425.98-3.24%481,964
Oct 6, 20261,487.881,491.641,458.791,473.691,473.69-0.42%375,083
Oct 5, 20261,444.411,482.971,432.381,479.891,479.892.79%685,457
Oct 2, 20261,406.001,455.991,393.131,439.731,439.735.79%705,805
Oct 1, 20261,359.981,368.671,331.001,360.971,360.971.02%492,345
Sep 30, 20261,353.771,361.441,324.961,347.221,347.22-0.50%465,261
Sep 29, 20261,372.051,374.321,347.851,355.991,353.990.35%450,392
Sep 28, 20261,353.131,359.761,320.801,351.201,349.21-1.19%660,021
Sep 25, 20261,332.631,377.141,329.471,367.431,365.412.39%536,878
Sep 24, 20261,317.091,349.641,313.091,335.551,333.58-1.47%492,628
Sep 23, 20261,367.081,371.661,302.101,355.471,353.47-1.82%767,407
Sep 22, 20261,278.081,387.461,271.031,380.621,378.588.06%1,535,211
Sep 21, 20261,243.251,283.831,217.241,277.681,275.804.92%1,030,120
Sep 18, 20261,185.521,221.511,176.211,217.801,216.004.12%1,427,382
Sep 17, 20261,183.151,184.151,146.401,169.581,167.851.91%950,234
Sep 16, 20261,157.421,176.051,133.831,147.611,145.920.45%625,211
Sep 15, 20261,164.971,171.181,136.651,142.461,140.77-0.07%557,090
Sep 14, 20261,184.431,185.891,141.381,143.241,141.55-7.39%984,700
Sep 11, 20261,200.801,241.041,194.471,234.461,232.644.08%555,184
Sep 10, 20261,184.851,205.201,175.951,186.081,184.33-1.47%625,369
Sep 9, 20261,206.701,228.821,198.171,203.751,201.97-1.21%508,493
Sep 8, 20261,230.641,243.091,211.221,218.501,216.70-0.44%763,467
Sep 4, 20261,239.131,239.131,206.551,223.861,222.050.84%625,898
Sep 3, 20261,200.701,225.001,189.491,213.651,211.86-0.47%413,703
Sep 2, 20261,224.921,245.231,211.741,219.361,217.56-0.54%405,205
Sep 1, 20261,245.111,250.001,211.861,225.961,224.15-3.30%758,060
Aug 31, 20261,261.901,279.001,253.001,267.771,265.900.92%689,203
Aug 28, 20261,306.031,306.031,254.011,256.261,254.41-4.18%709,349
Aug 27, 20261,319.751,332.001,290.861,311.081,309.150.55%459,325
Aug 26, 20261,301.041,311.021,284.561,303.881,301.96-0.02%255,715
Aug 25, 20261,310.061,322.991,291.541,304.151,302.231.49%359,622
Aug 24, 20261,298.381,305.641,255.561,285.031,283.13-2.37%897,888
Aug 21, 20261,321.131,337.701,297.301,316.281,314.340.43%529,769
Aug 20, 20261,311.341,327.001,295.021,310.601,308.670.80%437,133
Aug 19, 20261,321.121,335.191,267.771,300.141,298.22-2.48%710,871
Aug 18, 20261,365.451,376.531,303.221,333.181,331.21-5.85%1,144,286
Aug 17, 20261,418.011,448.761,411.601,415.991,413.901.00%542,867
Aug 14, 20261,360.001,404.141,355.111,402.011,399.942.90%440,360
Aug 13, 20261,421.441,438.381,358.001,362.551,360.54-4.38%506,489