Companies Reporting Earnings Today...

• Ace Ltd. (ACE). Expected to post Q4 earnings of $1.90 a share, according to analysts polled by Thomson Financial.

• Avon Products Inc. (AVP). Expected to report Q4 earnings of $0.28 per share.

• CME Group Inc. (CME). Expected to report Q4 earnings of $3.62 a share.

• CNET Networks (CNET). Expected to report Q4 earnings of $1.29 a share.

• Duke Energy Corp. (DUK). Expected to post Q4 earnings of $0.24 per share.

• Martin Marietta Materials (MLM). Expected to post Q4 earnings of $1.55 per a share.

• Nabors Industries (NBR). Expected to post Q4 earnings of $0.73 a share.

• THQ Inc. (THQI). Expected to post Q3 earnings of $0.33 per share.

• Walt Disney Co. (DIS). Expected to report Q1 earnings of $0.52 per share.

• XL Capital (XL). Expected to report Q4 earnings of $1.76 a share.