Bitcoin is getting quite close to its top and when that market does turn, its likely to plunge at least 70% from its peak, probably more. I say that even though I'm long some, along with some small coins and alt coins. But I have been banking some profits and rebalancing my positions down. The arrival of BTC futures might very well be the catalyst that will implode this market. "sell the news" as they say. This is the most obvious bubble of all time, anyone who doesn't think its a bubble that is out of control needs to have their head examined.
The sentiment extreme (every news show and media talking about it, heck, even Sitcoms now) along with the price extreme (the price rise has been more extreme than pretty much any bubble in history) and the fact that the product (that is, bitcoin as a money transfer vehicle) is still a joke (the number of US retailers accepting bitcoin went DOWN in 2017 vs 2016 according to Morgan Stanley), transactions havent taken off. You got to pay $2-$5 to transfer money and wait 30 minutes to clear. Which makes it worthless for small purchases. This is a very unproven product. I believe we are at a point where we might see a large surge to the upside that ends in a crash (kinda like Silver in 2011), or we might just implode naturally. I believe the large gains that can come from the mania phase makes it worth it for me to stick around but I will be ready to dump it all when this turns. Furthermore I got a number of hedges in place (I'm currently short XNET and I'm short GBTC against BTC, that is, a spread trade). I plan to put in other hedges in as well (mostly in the blockchain stocks that break their uptrends and start to fade, I will short them). This way, if I wake up and BTC is down $3,000 (a very serious possibility), I got these hedges in and my loss will be limited
BTC is an extremely dangerous market right now for non-pros, people are going to learn their lessons the hard way. I have never seen so many smart people get sucked in into this nonsense. I guess thats why this bubble got so big, it has a very good story.
BTC has had three 85% drops after their past massive surges, I have little doubt there will be another one soon. What happens after the 85% drop is a different question, but its a questions to be dealt with in the future, not now when emotions are high and people can't think rationally. If BTC implodes 90% and then bases out and starts to come back up, sure, I will be a buyer but I don't have to hold through a huge decline to do so. If one day it will go to $100k (which I seriously doubt) it will probably have to go through a big correction first anyway
In reality, LTC is probably a much better product than BTC but even that one will probably implode before it has any chance of rising. Market fundamentals have not changed, price and sentiment extremes tend to be horrible buys, I don't think this will be much different either. Be careful, this is a trader's market, not one to have any strong positions, one way or the other