Among other mid-cap companies, JetBlue, Pilgrim's Pride and Mohawk Industries may cash in on economic trends, a fund manger said.
Experts Nelson and Costa said in an interview with CNBC that stock picking is the way to go for investors next year.
Market watcher David Darst sees a total return of as much as 11 percent for the S&P 500 next year, including dividends.
Small capitalization stocks are primed for a 'January Effect' tailwind that may help them post big gains next year.
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