I hate to advise if you should or not because that has to be a personal decision based on risk tolerance...What I have normally done is take profits and re enter....for me its because I take large positions ( for me they are large ) and also I can tell you many times in positions such as C I have made a mistake in getting out ...in hindsight it would have been better to stay IN....But thats again just for me....
C is coming up too quick but its also close to $ 5 so despite the bashers and negative new blinks here and there it will soon enough go past $5 I think.....
I am hanging in there but then again I got out last week with $4000 net profit and then got IN this am and am up at this point but only on paper obviously...havent sold
You can always take out initial investment and ride the rest and or take initial out and some profits and ride the rest and or do whatever you want - lol - ;-)