8. Dunkin' Brands ( DNKN) Company Profile: Dunkin' Brands is the franchisor of Dunkin' Donuts and Baskin-Robbins restaurants across the U.S. The company held its IPO in July. SAC Capital's Investment: Cohen's fund bought 738,000 shares of Dunkin' in the fourth quarter, which had a market value of $18.5 million as of Dec. 31. Share Price Performance: Since the Dunkin' IPO, shares are up 3%. After dropping sharply in November and December, shares have rebounded nearly 15% in 2012.