I believe it will be a few coins that basically become the new world economy. EOS is definitely one of them. Once it's network launches, I expect the usual profit-taking, steep dip, lots of volatility, followed by a return to a fairer value. Yes, EOS is high for its' current environment - but it is the longest coin offering ever, and tokens are more widely distributed because of it.
20$ for a share in EOS is not overvalued, for the longer-term HODLer. EOS coin registrees are already receiving additional coin drops from other projects that will be working off of the EOS blockchain. EOS coin holders will be receiving many of these token drops simply for holding their tokens. This is not going to be a token that you sell - it is going to be a token that will continue to add to your longer term wealth as you hold it.
It can be short traded as any other asset, but once people understand its' many other benefits, I believe the day-trading on this asset will slow down.
Did you invest in a token without actually reading and understanding the "White Paper?" Shame on you. Better to "Do Your Due Diligence" before making emotional trading decisions based on SteemIt commenters who are "cheering for their team." I hold several other assets and asset classes as well. It would be stupid to go "all in" on EOS or any other token or coin.