Arthur Hayes co-founded BitMEX, a cryptocurrency derivatives exchange, in 2014 alongside Benjamin Delo and Samuel Reed, and co-founded Maelstrom, a family office focused on crypto infrastructure, where he serves as CIO. Arthur Hayes's Twitter Score is 1000 out of 1000 (an Excellent rating) as of July 2026, placing him at rank #1 (top 0.1%) out of 389,201 accounts tracked, with only 36 accounts on the platform scoring above 900.
Arthur Hayes previously served as CEO of BitMEX and previously worked at Deutsche Bank and Citigroup as an equity derivatives trader. He is credited with inventing the perpetual swap, introduced at BitMEX in 2016, which became the platform's most popular derivative product. BitMEX was operated by HDR Global Trading Limited and incorporated in the Seychelles.
Arthur Hayes was indicted on October 1, 2020 by U.S. prosecutors on charges of operating BitMEX as a vehicle for money laundering and sanctions violations by failing to maintain adequate anti-money-laundering controls, and stepped down as CEO that same month. He surrendered to U.S. authorities in April 2021, pleaded guilty on February 24, 2022 to willfully failing to maintain an anti-money-laundering program at BitMEX in violation of the Bank Secrecy Act, and was sentenced on May 20, 2022 to six months of home confinement, two years of probation, and a $10 million criminal fine. He received a federal pardon on March 28, 2025 from President Donald Trump alongside the other BitMEX co-founders. Separately, BitMEX agreed in August 2021 to pay $100 million to settle CFTC and FinCEN charges, pleaded guilty in July 2024 to a Bank Secrecy Act offense, and was criminally fined $100 million on January 15, 2025.
Arthur Hayes is CIO at Maelstrom, which is seeking to raise at least $250 million for its debut private equity vehicle, Maelstrom Equity Fund I, targeting $40 to $75 million per deal across four to six acquisitions of profitable off-chain crypto businesses. Maelstrom also launched the Bitcoin Grant Program to fund open-source Bitcoin Core development, with grants ranging from $50,000 to $150,000 per developer for 12 months. Arthur Hayes continues publishing macro and crypto market essays in the Crypto Trader Digest series on the BitMEX blog, with posts as recent as June 2026. His publicly known holdings include Roll, Upside, zeroDAO, NF3, MAXX AI, Elixir, Superform and Oyl. Arthur Hayes has 806,054 followers as of July 2026 and has published 2,676 posts since 2018. He has been mentioned by 1,627 accounts across 4,682 total mentions.
Who follows Arthur Hayes on X?
Arthur Hayes draws notable followers from across crypto and finance. The accounts that follow Arthur Hayes include 3,792 founders, 830 angel investors, 2,564 influencers and 199 VCs, among them Erik Voorhees, Laura Shin, jesse.base.eth, Toly, Cobie and Ansem.