There's this site
http://satoshiblocks.info/ which identifies a miner called "Patoshi" who likely was Satoshi him/her/themselves. It's quite interesting to read the whole story and how the attribution was done. It's quite technical though and needs some deeper understanding of Bitcoin mining details.
If the attribution of blocks to the miner "Patoshi" is more or less correct and if we assume it's actually Satoshi Nakamoto then this miner mined somewhere in the ballpark of 21954 blocks, times 50
BTC block subsidy that's roughly 1.1 million BTC. Only a few of those BTC ever moved (Hal Finney got some directly from Satoshi's block #9 e.g.).
Can you call this Satoshi's fortune? Well, it depends. Personally, I don't expect any of those roughly a million+ BTC to ever move again. Satoshi Nakamoto will not resurface on its own and I hope for him/her/they to remain anonymous forever. This is the way.
P.S.
My Patoshi blocks watch-only wallet gives me the following balance as of today (it's not entirely correct as very few blocks are likely wrongly attributed; they've been spent at times and in a manner which doesn't quite match so far observed behavior of the miner "Patoshi"):
time bitcoin-cli -rpcclienttimeout=0 getbalance
1096252.00539449
real 6m34.653s
user 0m0.003s
sys 0m0.003s