No one knows for sure since his holdings are split up over thousands of addresses. Satoshi himself mined the earliest blocks and hasn't moved the coins yet. However, with that being said, Satoshi Likely wasn't the only miner in early 2009. There had to have been a few extra anonymous early miners and they too likely never moved the coins they mined and disregarded their private keys. I mean back then Bitcoins were worthless and at the time it seemed just like a cool tech experiment/proof of concept.