That all depends on your goals and time frame. If you were in it as a short term swing trade, yes, perhaps. I think the down day on 3/19 was a bit ominous in the short term.
If you are a long term investor, I agree with smk, the best is yet to come. The market is jumpy now due to EU bailout problems. I don't think recent drop has anything to do with the fundamentals of MRVL.