record highs the week before that. maria bartiromo spoke with the winklevoss twins who found an exchange for the virtual currency and they had some words for those who may fear a bitcoin bubble. watch. to this point it s basically been a spot market and so this is the first time that people can actually express easily a short position on bitcoin so what that s going to do is create a truly two-sided market which should reduce volatility in the long term and also increase price discovery and just make it easier for institutions and individuals to gain access and exposure to bitcoin with this contract because it s cash settled, you can buy it with cash and you settle out in cash, so you don t have to actually touch the underlying ordeal with bitcoin but you can get the investment exposure to it so it s just another financial product and easier way to get access.