Sell. The only time you'd do better to wait is if the stock tracked or beat the market. (Tracking as opposed to beating works because if you wait, you sell as long-term capital gains, as opposed to short-term, which saves taxes.)
If you have a lot of faith in your company and think it will do better than the market, then sure, feel free to keep. That's a matter of loyalty. As far as prudence goes, selling is the better choice in my opinion.