According to what he's said in chat and to others, the claim is that he has a mining rig that generates 300BTC/day. I don't even know if that's possible, but that's the current rumor about him.
Also worth noting is that in the days before that 2200 loss, he was up I believe somewhere between 1600-2000 (although I was told that he lost somewhere around 600-800 in the days before THAT, and after big wins he would give away a ton of BTC).
He was def very interesting to watch play but I don't think he's been around much after that big loss.