Children's Place Inc (NASDAQ:PLCE) and Sigma Lithium Corp (NASDAQ:SGML) are this week's picks for Schaeffer's Cheap Seats: Stocks Under 20segment.Thoughthefromwidelydifferentsectors,thestocksareunitedtodayintheirnotablepricemovements.Children′sPlacestockwaslastseenup98.89.74, 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 ...