Zynga Down 5% Early on Monday

Shares of social game company Zynga ZNGA have fallen 5% on Monday. The company began trading in the NASDAQ after completing a $1 billion IPO on Friday. Shares were sold at $10, but fell 5% to close Friday at $9.50. At last check, ZNGA had shed another 5% and was trading at $9.00. Around 5.1 million ZNGA shares have already traded in the early going on Monday. Zynga lets wannabe mob bosses, farmers, and poker champs get their game on. The company is a leading social game developer with titles such as Mafia Wars, FarmVille, Café World, and Zynga Poker.