After their first three days of trading, Facebook (FB) shares sank some 18% from their initial price offering of $38, closing Tuesday at $31. Since the IPO, the focus has shifted to the troubles with the Nasdaq's trading system as well as questionable actions by the underwriters, such as lowering estimates without telling the public. Facebook is certainly a stock to watch in the days ahead. It is unclear whether or not the social platform shares will surge back. Facebook shares are up 2% at $31.63 in pre-market trading.

Moody's Investors Service is satisfied with the progress of Ford Motor Company (F) and has accordingly upgraded its credit rating to investment grade Tuesday. At a time when Ford is experiencing praise from several research firms such as Fitch ratings, which upgraded the automaker last week, it has become clear that Ford's restructuring efforts have paid off. The company recently reported wholesale shipments that were 50% above the estimated breakeven point in North America. Ford closed Tuesday at $10.19.

Big Lots (BIG) underwhelmed analysts Wednesday when the closeout retailer reported lower-than-expected profit in its first quarter. The company also lowered full-year estimates. Earnings dropped 22% from $52.5 million last year to $40.7 million in the recent quarter. The company's earnings per share of of $0.68 were a penny below Wall Street estimates. BIG closed Tuesday at $34.79. Shares fell 6% in pre-market trading.

Luxury homebuilder Toll Brothers (TOL) released second quarter earnings and six month results Wednesday morning. Revenue was up 17% to $374 million compared to sales of $319.7 million in the year prior. Net income in TOL's second quarter was $16.9 million. TOL closed Tuesday at $27.03.