I don't know if links are allowed but I saw a pretty scary video on yahoo (looked at the headlines on URE and clicked on "Returns at These ETFs Could Shock You"). Anyway, it seems to imply these double leverage ETFs could go down to zero. Could that happen? If the market goes up, could URE just stagnate and stay down? These ETFs now seem very bizarre to me. I can understand trading the non-leveraged ones like XLF and IYR, but weird correlations seem kind of scary.