I saw there are a lot of topics about undervalued coins, but I did not find any about overvalued coins. 
I hope everyone agree that there is no point to talk about some pumped crap. So let's only talk about coins that should have real value, but for some reason are overvalued right now.
As for me, I think the most overvalued coin today is Ethereum. I don't understand why does it cost so much. It is not decentralized. It is not limited, so there is no deficit. Nowadays it doesn't look innovative. It is not even great as a cryptocurrency. Of course it is great for ICOs, but most of the ICOs are crap. Most of this coins will die in future. So it's just a hype and nothing more.
Well ethereum has smart contract and a lot of people are using it for ico, crypto kitties etc so it's certainly not overvalued. Bitcoin is overvalued because it is useless as currency and only act as a digital gold/speculative asset. Trx is overvalued because no matter what kind of potential it has, right now it only has a whitepaper and can't justify that kind of marketcap. I hope everyone agree that there is no point to talk about some pumped crap. So let's only talk about coins that should have real value, but for some reason are overvalued right now.
As for me, I think the most overvalued coin today is Ethereum. I don't understand why does it cost so much. It is not decentralized. It is not limited, so there is no deficit. Nowadays it doesn't look innovative. It is not even great as a cryptocurrency. Of course it is great for ICOs, but most of the ICOs are crap.
Most of this coins will die in future. So it's just a hype and nothing more. When big company wants to support cryptocurrency, it definitely will add bitcoin, not ethereum. Smart contracts is a great technology, but who will we need ethereum without it? Not a lot of people. Because it is only about ICOs. While there is a lot of hype around ICOs, there is a lot of hype around ethereum. 2017 was a year of ICOs, but I'm pretty sure that in 2018 we will not see so much of them. Just because finally everyone will be tired of these crappy coins. IMOp.s. cryptokitties are crap