I dont actually know of any litecoin stocks. I own LTC outright.
For Ethereum I'll have to do a little research later. I would take a look at the Enterprise Ethereum Alliance. A lot of big players in there. In some previous posts I mentioned where I think it will go -- which is to the big corporations who have the expertise and money to leverage the technology in ways a small company couldn't do as easily.
There will definitely be some small guys that will do very well though. I've looked at DIGAF but never pulled the trigger, looks like its done very well this last month.
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