Satoshi most likely has a stash of several thousand Bitcoin that were mined using a standard miner without their tell-tale finger print. (Something about the odd nonce distribution with Satoshi's coins gives away his main set.)

Also when Satoshi left the development team in 2010 he could've been mining normally like everyone else, and he could have easily amassed 10,000+ Bitcoin in that time without it ever being linked to his early 1,000,000 coins.

I think it's likely Satoshi has cashed out millions of dollars worth of Bitcoin, just not from the pile of coins everyone is watching.