Question: what was the best performing stock of 2018?
Answer: Netflix, Inc. (NFLX) HCA Healthcare (HCA) Opening price on Jan. ...  Under Armour, Inc. (UA) ...  Boston Scientific Corporation (BSX) Opening price on Jan. ...  Illumina, Inc. (ILMN) ...  Amazon.com, Inc. (AMZN) Opening price on Jan. ...  NetApp, Inc. (NTAP) Opening price on Jan. ...  Intuitive Surgical Inc. (ISRG) Opening price on Jan. ...