I think whatever you need to know about a Formation of bubbles and their burst you can see in the ZM chart:
An 805% move in 18 months followed by an 84% decline in the next 17 months:
During that 84% decline, you see a 36% and 48% positive surge, but the aftermath remained the same..!
Even a significant change in the fundamental did not help:
But ZM...
These days, your stocks create big gaps (usually down side) after earnings!
Some People think this could be a good opportunity to enter a long position.
but
Is it really good to do that?
My simple answer to this question is:
No
Why?
Look at these examples in the past few months:
FB:
DOCU:
PYPL:
F:
ZM:
PINS:
WISH:
UPST:
BABA:
...