When it comes to ARK Innovation ETF (ARKK), people often wonder if they've missed the boat.After all, this ETF, managed by the famed Cathie Wood, has seen some wild price swings,making investors either very happy or, well, slightly uneasy.So, the real question is: Is it too late to buy ARKK, or is there still an opportunity here? 1. A Look at ARKK’s Performance ARKK focuses on disruptive innovat..