That's for sure, case in point, look at PRGE.
Post# of 102788
I bought close to 500k shares in mid 7/16 held for a while, got pissed and sold in mid 11/16 at a loss.
I don't know why, buy yesterday I took a look at the chart.
These were the next words that came out of my mouth:
https://www.youtube.com/watch?v=FbjWb6pHqXc