len: ZYXI +.60 to 5.72, may be the exception to your gap theory .... all the recent good news would appear to make a drop back to $2.70 unlikely, at least in the short term .... of course it could still happen in the long term if their business momentum falters.
At least in this case the buyers on that 'gap up' have done extremely well if they're still holding .... I sold my last shares in the mid $3's. Hindsight perfect as usual ! I never would have guessed it would run this high so quickly ....
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.