Wolterk Shares of Mattel, Inc. (NASDAQ:MAT) have been a particularly poor performer over the past year, losing over 20% even as the market has rallied substantially. As the tailwind from the Barbie movie has faded, the extremely muted demand for toys has weighed on results. Shares briefly jumped Monday on M&A speculation, before giving back much of those gains Tuesday. I last covered Mattel in October, mistakenly rating them a buy, and shares are down 20% since that recommendation. With toy demand stayi ...