I think there are a lot of interesting points to the article. It's currently not possible to short Uber directly, but you could go through a derivatives broker, or you could short a company indirectly, like Xchange, or buy stocks in a company that would profit if Uber collapsed. I think that while you can't directly short Uber, you can get creative... and I'm sure that with the number of people that want to short Uber, and if it did a down round that would be even higher, that there will be some possibility of shorting Uber directly before IPO.

I'm curious why Uber isn't on any of those private exchanges. Is Uber worried it would be shorted if it were?