That $200 stock went to $2,000, forward split 5:1, became $400, and now is nearly $900 (or $4,500).
Predicting bubbles is easy. Predicting when they pop is not. The FED is highly invested that they don't.
One thing you can count is people are sheep. Their is a "flight to safety". Whether it is real safety or not is irrelevant. FANGS / FANGSM / or stock du jour are always going to party rock, whether market is going up or down. Don't fight it.