Researchers estimate that Satoshi mined coins up to block 54,316, capturing 1,125,150 BTC or $10.5 billion using today’s exchange rates.
However, in 2018 the researchers from Bitmex Research conducted an in-depth study about Satoshi’s alleged bitcoin stash as well and estimates were much lower. Bitmex concluded that Bitcoin’s creator may have only mined 600,000 to 700,000 BTC or $6.5 billion worth of coins.