The Genesis address created holds about 99.85 BTC and is currently a dormant wallet.
The genesis address holds 50 bitcoins less than that, because the genesis block reward is unspendable.
There are also speculations that Satoshi might have thousands of dormant wallets as they were used to receive block rewards.
Satoshi definitely mined lots of the first blocks, and since these coins remain untouched, if he is alive and possesses the keys, it's plausible that he could own thousands, or even millions, of coins.
From a total of 21million total supply, can you attempt a prediction guess of the total number of Bitcoin that would be in active wallets after all Bitcoin has been mined?
There are a few thousand provably lost coins, but beyond that, our knowledge is limited. Speculating about lost coins doesn't seem valuable given the high level of uncertainty surrounding our conclusions. I hope this addresses all of your concerns. There isn't anything more to say.