Apple CEO Tim Cook Discloses $3 Million Nike Buy With Dow Giant At 7-Month Low Investor's Business DailyNike Stock Is Getting a Lift Today. The Reason? Apple CEO Tim Cook InvestopediaTim Cook did something he hasn't done before — buy Nike's stock on the open market MarketWatchNike gains after Apple's Tim Cook buys the dip (NKE:NYSE) Seeking AlphaApple's Cook doubles Nike stake, endorses