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NEW YORK ( TheStreet) -- Monolithic Power Systems (Nasdaq: MPWR) hit a new 52-week high Monday as it is currently trading at $19.93, above its previous 52-week high of $19.91 with 89,765 shares traded as of 12:59 p.m. ET. Average volume has been 244,700 shares over the past 30 days. Monolithic Power Systems has a market cap of $575.2 million and is part of the technology sector and electronics industry. Shares are up 30.5% year to date as of the close of trading on Friday. Monolithic Power Systems, Inc., a fabless semiconductor company, designs, develops, and markets analog and mixed-signal semiconductors. The company has a P/E ratio of 51.5, above the average electronics industry P/E ratio of 41.6 and above the S&P 500 P/E ratio of 17.7.