Apple chief Tim Cook bought shares worth about 3millionin Nike,amovethatnearlydoubledhispersonalstakeinthe sportswear makerandsignaledconfidenceintheturnaroundstrategylaidoutbyCEOElliottHill.Sharesofthecompanysurged558.97 each.As of Dec. 22, he held about 105,000 shares, according to the filing released on Tuesday. 3 Last week, Nike reported weaker qua ...