two today's gains are direct result of more leeway being given to mark to market rules. Basically this means corporations and specifically banks have the legal right to lie about what their assets are worth. So, they will inflate their assets massively and stock prices will rise. Then when the Fed buys up those assets they would be buying those assets at hugely inflated prices.
It's more of the same. how long can this type of Ponzi scheme go on for you ask? I don't know