For the week of August 22, investors will be watching a slew of corporate earnings and a key speech from Federal Reserve Chair Janet Yellen. On Tuesday, Best Buy (BBY - Get Report) and Toll Brothers (TOL - Get Report) report quarterly results. Wednesday, the markets await earnings from Express (EXPR - Get Report) , HP Inc. (HPQ - Get Report) , PVH Corp. (PVH - Get Report) and Williams-Sonoma (WSM - Get Report) . On Thursday, Dollar Tree (DLTR - Get Report) , Dollar General (DG - Get Report) , Gamestop (GME - Get Report) , Tiffany & Co. (TIF - Get Report) and Ulta Salon, Cosmetics & Fragrance (ULTA - Get Report) release financial results. Tata Motors (TTM) posts earnings on Friday. On the economic calendar, July new home sales figures are released on Tuesday. On Wednesday, July existing home sales numbers are unveiled. Thursday, the markets await weekly jobless claims and July durable goods orders. On Friday, the second reading on second quarter GDP is released, while Federal Reserve Chair Janet Yellen delivers a closely-watched speech on the economy in Jackson Hole, Wyoming. TheStreet's Scott Gamm reports from Wall Street.