Children's Place Inc (NASDAQ:PLCE) and Sigma Lithium Corp (NASDAQ:SGML) are this week's picks for Schaeffer's Cheap Seats: Stocks Under $20 segment. Though the from widely different sectors, the stocks are united today in their notable price movements. Children's Place stock was last seen up 98.8% at $9.74, following the retailer's unexpected profit for the second quarter. The company posted earnings of 30 cents per share, besting analyst estimates of a loss of $1.05 per share and making up for a revenue de ...