Earnings Preview: Media Giants in the Spotlight By: CNBC.com News April 26, 2013 at 14:08 PM EDT We're heading into the end of the heavy period of earnings season. Next week more than a quarter of the S&P 500 is set to report, including big names in media. Read More >> Related Stocks: American International Group Berkshire Hathaway CBS Corp Comcast Corp Facebook General Motors Hartford Finl Services Gp Iac Inc Merck & Co Och-Ziff Capital Management Pfizer Time Warner Via Renewables Inc Cl A Viacom Western Union