Stocks have exploded for gains in the thousands of percent before.....unfortunately I've never been in one, not before it jumped and not after.  Hind sight might be 20/20 but its no path to exponential gains.  

Here's a MF article chronicling some stocks that had gains of this type:

https://www.fool.com/investing/general/2013/07/23/the-best-performing-biotech-stocks-of-the-last-dec.aspx

Of course the flip side is that sometimes biotech stocks crater and even disappear, and that's more common.