Using the coinbase dashboard, in order of how well each has fared over the last month, it`s clear that we have had only one winner of these top three. I certainly see a future with Bitcoin, and Ethereum, but this last month may be a sign of things to come with Litecoin. My understanding is it seems to have everything in place already that has knocked Bitcoin down over the last month.
And as far as Ethereum, it seems to be the ICO bitch right now, and as long as these ICOs keeping popping up and needing ETH to fund them, it would seem likely for there to be continuing volatility.
So, if you're a trader should be some great buying ops, as there are right now. If you're holding them as investment, sit tight. We all know it's going to be a bumpy ride, but there is tremendous commitment worldwide for all three of these coins.