In 'What's Ahead on Wall Street' for Thursday Feb. 18, there are a few key quarterly reports we're focusing on. Before the opening bell, we'll hear from Walmart Stores (WMT), DISH Network (DISH), Starwood Hotels & Resorts Worldwide (HOT), and Discovery Communications (DISCA). Then in the afternoon, Nordstrom (JWN) will reveal its latest results. Investors will be closely eyeing Starwood Hotels & Resorts Worldwide when the hotel operator posts its latest results. Wall Street is anticipating both its top and bottom line to drop from the same period last year. For the latest quarter, analysts' are expecting earnings of $0.79 a share on revenue of a little under $1.5 billion. Since more than half of the company's properties are located outside of the U.S., foreign exchange will likely dampen its revenue per available room (RevPar). You may recall, back in November, Marriott International (MAR) said it was buying Starwood for $12.2 billion, creating the world's largest hotel company. TheStreet's U-Jin Lee reports from Wall Street.