Unless you're a trader, why would you want to sell?
Ask yourself this question...Do you honestly believe 1 year from now that VMW won't be leaps and bounds above where it is now? This is the trap I see quite often. For example, I convinced my son to start an investment portfolio recently with 100 shares of VMW, BHP, and AAPL. Why did I suggest those? Because those are stocks that I feel can be on autopilot for the foreseeable future. I don't want him to make the classic mistake of watching the ticker everyday, all day. I made that mistake a few years ago with GOOG, I am not going to do it again.
Nobody can give you an advice. After all, it is your money. However if you are afraid you can cash half of your position before earnings and leave the other half running with a trailing stop of 10%. Good luck!