David Dietze thinks double-digit earnings growth will continue next year but is concerned about stock valuations. He looks at commodity prices, noting that an ounce of silver is now worth more than a barrel of oil, an unusual situation. His stock picks include Fiserv (FISV), which he sees “easily doubling” over the next three years, Diageo (DEO), “one of the best in the world” for consumer products, and UnitedHealth (UNH).