[ricardobeat]

eToro let’s you short BTC, Dash, Ethereum, LTC and XRP, though no leverage is available for those, and the spread can be a bit daunting.

Disclaimer: I don’t usually trade crypto there, this is not investment advice.

EDIT: apparently it’s not available in the US.

If you sign up with my referral link we both get $20: http://etoro.tw/2BmqxQb

[eemax]

I should clarify that I am in the U.S... seems like most of these sites are unavailable here.

[ricardobeat]

Oh, sorry. I believe one of the main exchanges (bitsane/bitfinex Maybe?) was going to make options and margin accounts available, don’t remember which one. There’s also cex.io, but it’s in the UK.

I guess you’ll have to wait for JP Morgan’s fund to go live...

[DigitalJack]

I’m sure you could get odds in Vegas, though probably not long terms.