It looks like it hasn't broken out yet, but possibly might soon. It has gone from 84 something to 94 since the beginning of April though, so I guess if your holding might as well see if it can keep going.
And I disagree with the person recommending to buy BP instead. BP is a little bit closer to it's lows for the past year compared to it's highs, while XOM is at it's 52 week high pretty much. XOM is definitely the stronger stock and if you were going to buy one, why would you buy the weaker of the two?