Investors with an interest in Semiconductor - Analog and Mixed stocks have likely encountered both ON Semiconductor Corp. (ON) and Monolithic Power (MPWR) . But which of these two stocks is more attractive to value investors? We'll need to take a closer look to find out.There are plenty of strategies for discovering value stocks, but we have found that pairing a strong Zacks Rank with an impressive grade in the Value category of our Style Scores system produces the best returns. The Zacks Rank is a proven s ...