Stocks erased their earlier gains by Tuesday's close as lower oil prices and a fresh terror scare in Germany rattled the markets. This comes after strong retail earnings had stock posting gains most of the day. And while Walmart (WMT) and Home Depot (HD) reported gains, Dicks Sporting Goods(DKS)fell sharply after it slashed its profit guidance for the fourth quarter and year. The stock has tumbled nearly 40% since early April. The company noted lower sales of cold weather hunting gear due to the warm temperatures. TJX Companies (TJX) shares rose Tuesday after it posted quarterly earnings that beat forecasts. The off-price retailer that operates T.J. Maxx, Marshalls, and Home Goods saw same-store sales increase 5%. Finally, GNC Holdings (GNC) stock dropped double digits after the Department of Justice announced it will take criminal and civil actions against dietary supplements companies.