The Winklevi could stop this bear market without even putting additional capital at risk. all they have to do is wait for this little correction to level out (and it will, no sharp "V" drop), go margin long with their 1%, short the fuck out of it after it goes over 400, slam it back down to $270 and cover. Boom. but they won't do it because they're the kind of WASPy Ivy league entitlement princesses who would  let a Jewish kid steal their best idea and give them a measly $50 million for it.