Arthur Hayes, co-founder of BitMEX, is estimated to have a net worth between $200 million and $350 million in 2026, according to Arkham. His wealth includes approximately $42 million in verifiable on-chain assets, with significant holdings in BitMEX equity, the Maelstrom family office fund, and potential undisclosed token investments. Despite BitMEX's decline from its 2019 peak, when it had a valuation of $3.6 billion, the platform is currently valued at around $5 billion, remaining a key asset for Hayes. After being sentenced in 2022 for violating the Bank Secrecy Act, Hayes was pardoned by Donald Trump in 2025. He continues to be a prominent figure in the crypto industry, contributing to innovations in perpetual swaps and market analysis.