I'm usually a holder I still coins and tokens I've got from Bounty campaign just like the two of the just recent projects I've participated in I'm still holding both of them but there are instances in the past that I dump my coins/tokens because
The coin is not progressing and I want to buy coins that has more potential.
So what is or are your reason why you are dumping your coin?
One possible reason to dump a coin us to hold some cash at hand. Another reason could be for selling high and buying low. Another could be when you feel the value of the token is useless and will not appreciate in the near future etc.