I doubt they have more than that because if they do they will probably have put all of it into the cold wallet
Lowering the max payout based on kelly criterion
This one seems to be a different case with yoloer. Judging from the screenshot at the previous page, I could see that indeed thats a very risky bet risking 0.1 BTC for 98x multiplier and normally people wouldnt do it because the risk are pretty much high.
Also the fact that this site is using a coindice script which has a lot of accusation due to that alot of site claimed that they lost alot using this script . I would say that this guy could know on how to "win" here or atleast use a known exploit or so
P.S : Someone told me how this could be done but Id rather not spill out any name for this
Another reason is that this https://bitcointalksearch.org/topic/m.10384052
Not much of a proof but someone risking 0.1 BTC for a 98x multiplier would not be lurking around for 10k satoshi though
P.S : I could be wrong on this