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Monolithic Power Systems, Inc. (MPWR) stock

MPWRNasdaqSemiconductors & Related DevicesFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 5, 2026Score 18/3074% above fair value
$1211.63+12.82 (+1.07%)

Close on Oct 30, 2026Market cap $59.54BP/E 74.0Yield 0.52%

Price history

Monolithic Power Systems share prices for every trading day, newest first. Adjusted for stock splits, not for dividends.

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Close, Oct 30, 2026
$1,211.63
+1.07% on the day
52-week range
$833.18 – $1,714.09
-29.3% from the high
Change over 52 weeks
+11.4%
From $1,087.56 on Oct 30, 2025
Average volume
839,066
Shares a day, last 90 sessions
DateOpenHighLowCloseChangeVolume
Oct 30, 2026$1,174.00$1,263.05$1,171.02$1,211.63+1.07%2,133,828
Oct 29, 2026$1,199.16$1,209.86$1,163.86$1,198.81-1.02%789,853
Oct 28, 2026$1,224.14$1,224.14$1,188.93$1,211.22-0.06%650,219
Oct 27, 2026$1,183.43$1,220.77$1,173.95$1,211.89+3.82%813,379
Oct 26, 2026$1,141.84$1,178.38$1,135.18$1,167.27+2.38%921,173
Oct 23, 2026$1,156.39$1,169.06$1,126.57$1,140.12-2.38%669,685
Oct 22, 2026$1,227.18$1,230.42$1,147.17$1,167.93-8.99%1,480,295
Oct 21, 2026$1,265.58$1,288.27$1,259.87$1,283.32+2.77%610,891
Oct 20, 2026$1,232.85$1,284.87$1,222.29$1,248.74-0.39%509,751
Oct 19, 2026$1,255.41$1,283.59$1,236.26$1,253.66+3.53%862,339
Oct 16, 2026$1,223.32$1,249.00$1,207.20$1,210.86-3.07%835,005
Oct 15, 2026$1,198.15$1,260.24$1,195.00$1,249.20+0.49%991,558
Oct 14, 2026$1,295.00$1,300.76$1,234.36$1,243.11-5.79%1,122,509
Oct 13, 2026$1,294.29$1,322.40$1,283.81$1,319.55+0.02%731,793
Oct 12, 2026$1,365.36$1,365.36$1,314.52$1,319.23-4.84%870,267
Oct 9, 2026$1,396.53$1,401.76$1,351.26$1,386.29+1.20%433,752
Oct 8, 2026$1,405.99$1,416.62$1,349.39$1,369.80-3.94%848,188
Oct 7, 2026$1,447.64$1,450.71$1,412.68$1,425.98-3.24%481,964
Oct 6, 2026$1,487.88$1,491.64$1,458.79$1,473.69-0.42%375,083
Oct 5, 2026$1,444.41$1,482.97$1,432.38$1,479.89+2.79%685,457
Oct 2, 2026$1,406.00$1,455.99$1,393.13$1,439.73+5.79%705,805
Oct 1, 2026$1,359.98$1,368.67$1,331.00$1,360.97+1.02%492,345
Sep 30, 2026$1,353.77$1,361.44$1,324.96$1,347.22-0.65%465,261
Sep 29, 2026$1,372.05$1,374.32$1,347.85$1,355.99+0.35%450,392
Sep 28, 2026$1,353.13$1,359.76$1,320.80$1,351.20-1.19%660,021
Sep 25, 2026$1,332.63$1,377.14$1,329.47$1,367.43+2.39%536,878
Sep 24, 2026$1,317.09$1,349.64$1,313.09$1,335.55-1.47%492,628
Sep 23, 2026$1,367.08$1,371.66$1,302.10$1,355.47-1.82%767,407
Sep 22, 2026$1,278.08$1,387.46$1,271.03$1,380.62+8.06%1,535,211
Sep 21, 2026$1,243.25$1,283.83$1,217.24$1,277.68+4.92%1,030,120

Seasonality

MPWR return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average4.4%4.8%0.1%5.9%3.4%4.6%7.7%3.0%-1.9%-0.2%2.8%0.9%
Months up6 of 107 of 105 of 106 of 107 of 107 of 108 of 106 of 105 of 104 of 106 of 94 of 9
202624.0%1.7%-4.1%47.7%-3.0%-11.6%3.2%-11.1%6.4%-10.1%
20257.7%-4.1%-4.8%2.3%11.6%10.7%-2.8%17.5%10.4%9.2%-7.6%-2.2%
2024-4.4%19.5%-5.7%-1.2%9.9%11.9%5.0%8.3%-1.0%-17.9%-25.2%4.5%
202320.6%13.5%3.6%-7.7%6.0%10.5%3.6%-6.8%-11.2%-4.4%24.2%15.1%
2022-18.3%13.8%6.0%-19.2%14.8%-14.6%21.0%-2.5%-19.7%-6.6%12.5%-7.2%
2021-3.0%5.4%-5.5%2.3%-5.1%9.0%20.3%10.2%-2.0%8.4%5.3%-10.8%
2020-3.8%-7.3%5.9%19.4%4.9%13.2%11.8%0.8%4.9%14.3%0.1%14.6%
20198.9%6.0%1.3%14.9%-25.2%17.0%9.1%1.6%3.6%-3.7%7.2%11.0%
20186.0%-1.7%-0.8%1.1%12.6%1.6%-0.7%13.0%-16.0%-5.9%11.8%-11.7%
20176.5%0.8%4.9%-0.7%7.3%-1.6%6.1%-1.0%5.4%14.2%-2.7%-4.9%