Homily Position & Bottom Catch

Importance of Stop Loss
If you bought one stock at 2 dollars, then the price has been down, to the recent price around 1, with 50% loss.
At the later stage, the price rose from 1 to 1.5, with 50% rose.
Therefore: have you recovered your cost?
You can recover your cost only the price rose 100%
If you stop loss and sell at 1.8, later up 50%, now your stock price is 2.7.