what's Maelstrom Equity Fund I?
Maelstrom Equity Fund I is the debut private equity fund launched by Maelstrom, the family office of BitMEX co-founder Arthur Hayes. The fund targets acquisitions of profitable, mid-sized crypto companies, particularly those providing off-chain infrastructure such as trading platforms, data analytics, and related services that support the broader cryptocurrency ecosystem. It aims to facilitate clean exits for founders at reasonable valuations while bridging crypto with traditional finance through cash-generating equity investments, avoiding direct token holdings. Structured as a U.S.-registered limited partnership, the fund plans to deploy $40-75 million per deal to acquire 4-6 companies, with a focus on control buyouts to scale operations and enhance integration with institutional capital allocators like pension funds and family offices. This approach addresses liquidity challenges in the crypto sector by emphasizing sustainable, high-cash-flow businesses over speculative assets.
Maelstrom Equity Fund I strategically invested in the River project on Jan 14, 2026.
Links
x.com/maelstromfundMade a strategic investment in River (RIVER project).
Provided funding to Ben Allen to work on payjoindevkit for enhancing privacy in Bitcoin.
The $250M fund targets crypto firms in Asia and Latin America with a $5M minimum investor commitment and uses an LP co-invest model structure.
Arthur Hayes launches $250M fund to buy mid-sized crypto firms in trading infrastructure and data analytics.
Maelstrom is raising $250M to acquire mid-sized crypto service firms.
Arthur Hayes' Maelstrom Fund is fully invested on the liquid side with positions in Ethena and EtherFi built during the bear market, targeting 10-100x outcomes over 2-3 years while focusing on protocol-level opportunities over seed/pre-seed deals and benchmarking all allocations against BTC performance.
CIO scheduled for main stage presentation at TOKEN2049 Singapore, October 1-2, 2025.
$10M funding secured through Uprising Labs and Somnia Network partnership for game development support.