This should be a basic no-brainer but everytime you see a stock go down 5% at the current price level. If it increases back by 5% it doesn't go back to its old price.
To illustrate.
10% loss needs 11% gain to return.
20% needs 25%.
30% needs 43%.
40% needs 67%.
50% needs 100%.
At 90% drop your stock will need to go up by 900% to return to its old price.
Right now you're seeing NASDAQ dropping double digits and futures are down mid singles almost everyday.
The power of compounding works both ways.