Yes it is normal,as you can see most of the investors are dumping the supply,added by some bounty hunters that causes a lot of problems to the token's value.That is why i am going to dump these coins after these people dumped their tokens so that i could maximize the profits ,you should be having some grace period when you are going to take profits with the ICO tokens.
It should take the more time to go, I was holding some coins and I haven't sold them all because there were so many thing need to be considered just like so many bounty hunters were still in awaiting list to dump their coin. I just take more time until the price will be recovered again.