I have taken part of some ICOs and everytime their token price goes down after the ICO.. why is that so?
Because the pre-sale investors are dumping their tokens to the market and they are trying to get fast buck. Remember you should aware about how much bonus that has offered by the ico team to the early investors before they are doing their ICO. when the price has been touching the ico price and they will dump it because they have acquired a huge bonus.
Beside early-bird investor, most of bounty hunters and airdrop hunters dump token at low price after they get their token, it make token price dropping after ICO.