Not exactly.
There are basically 4 types of gap...
Gap-n-go
Gap-n-crap
Gap-fill-resume
Gap-half-fill, resume
Gaps are always one of these. Not especially risky... play them as you will. (You have to guess as to which you think this one is... "on the fly".)
Trading gap ups certainly isnt for the faint of heart. Look at FFIV today.