I say waiting，if you sell the coin，it means you are a losser forever.On the contrary，if you hold the ico coin tightly，it means you have the possibility of becoming a winner.
I am for an ICO token than I can't wait to sell because most of the price drops at least half after being listed on the exchange.
The biggest sellers are gift hunters who immediately sell to get the best price for their tokens. Also ICO does not perform well in the bear market so I will not bet big on them.