Looks like someone is really nervous about current bitcoin prices and they want to facilitate shorting bitcoin:
https://www.bloomberg.com/news/articles/2017-12-04/the-next-big-short-hedge-funds-prepare-to-trade-against-bitcoinWe'll see how it goes. We have certainty whales on our side (those of us that are near %100 BTC just want to see it go higher) which will fight the shorts and try to liquidate them. But its clear someone up there wants to short it into oblivion, we'll see who wins. Everyone that has been calling tops for 2017 has been proven wrong thus far, it just keeps going higher. The psychological "collectible" effect of the 21 million limit is very strong and creates a permabull market now that a lot of people are catching up with it. Im on a position where I don't really care if there is a crash, I wouldn't lose money and i know long term we are going higher, would liquidate some of my alts to buy cheaper anyway.
I say this is mostly FUD!
Why should they short when there is so much more to be made on the long side??
Shorters will get rekt!
There will be shorters of course, especially guys who think they are the kings and nothing can stop them.
But there will also be really big players on the buy side. And either way, Bitcoin will learn them a tough lesson. Honeybadger does not care!
But how can they short? They cannot lend coins, they need to buy them before dumping them? And they need to buy tens of thousands and spread them over different exchanges...