The biggest
Bitcoin miner is a complex question to answer due to the anonymous nature of the blockchain. However, based on public information, several mining giants like Bitmain's Antminer series and publicly listed companies such as Marathon Digital, CleanSpark, and Riot Blockchain are known to have significant mining capabilities. Additionally, the original creator of Bitcoin, Satoshi Nakamoto, is believed to hold a large amount of Bitcoin, although he is not actively mining.