Stocks to watch Friday: LinkedIn, LeapFrog, Nuance By: MarketWatch February 10, 2012 at 06:46 AM EST Fewer earnings reports, a trio of S&P index changes and a pair of dividend increases are among the corporate headlines for early Friday. Read More >> Related Stocks: Akorn Inc Alliant Energy Corp CBOE Global Markets Inc FLIR Systems International Paper Lear Corp LyondellBasell Industries Nuance Communicatns PPL Corp Treehouse Foods United Parcel Service