Mattel (MAT 15.69%) stock made like a Jack-in-the-box this morning, popping up 12.5% through 10:55 a.m. ET after reporting a big fourth-quarter earnings beat after the market closed Tuesday. For the period, analysts had forecast Mattel would earn only $0.20 per share, adjusted for one-time items, on sales of $1.63 billion. Instead, Mattel reported adjusted earnings of $0.35 per share on sales of $1.65 billion. Mattel Q4 earningsMattel's sales grew 2% year over year, and the gross profit margin it earned on ...