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Should I sell when my stocks are growing?
It depends on what your investment goals are.  Are you investing for the short-term or the long-term?  What was your reason for investing in these stocks in the first place?  Timing short-term fluctuations in the market is very difficult, so if that's your goal, I wouldn't count on being able to sell and buy back in at exactly the right time.  Rather, I think you should think about what your investment rationale was in the first place, and whether or not that rationale still holds.  If it does, then hold on to the stocks.  If it doesn't, then sell.