STP Trading price on Bittrex actually went lower than the tokensale price few hours after its listing. I guess that was week hands letting go and whales buying more. Now, STP tokens is on the rise.
Yeah. It's a normal occurrence especially just after the project gets listed on an exchange. The price usually gets low because of weak hands dumping.
It's also a good chance for those smart people who wanted to have more but in cheap prices. Well it will still going to depend on the project if the people will keep supporting it and will not going to get a long to the flow of those weak hands.