I bought and sold AAPL several times over the past 3 years. There were sveveral times that the stock would get dumped and I'd buy 100 shares and turn a $5k profit then sell.
When the share price got over $190 I just lost my nerve to buy back in. The recent rate of rise defies logic to me.
I did much better on BX. Have held BX for years but went heavy when the price fell below $30 during the Dec, 2018 drop. Sold most of it around $53. It's around $63 now but I don't regret selling. 100% increase in a year is just nuts.
Meant to type $500 profit on 100 shares.