The Genesis of a Revolutionary Trading Concept: How a Hong Kong Hike Changed the Crypto Landscape

The concept of the perpetual swap, a groundbreaking financial product, was conceived on a hiking trail in Hong Kong in 2015. Ben Delo, BitMEX co-founder and mathematician, was discussing a persistent issue with a friend, Bavik, a derivatives trader. Despite experimenting with various futures contracts, including quarterly, monthly, and weekly options, customers continued to express frustration over positions closing without warning. They sought a product that mimicked spot trading but offered the leverage of derivatives. Delo's inquiry, "What if a future never expired?" sparked a pivotal conversation. Bavik's response, "Mathematically, it would be worth infinity," led to the idea of charging traders the bitcoin overnight rate, similar to LIBOR in traditional finance. However, Delo soon realized that this rate did not exist, prompting him to create it. This innovation would go on to become one of the most significant financial products of the 21st century. The story of BitMEX's evolution, from its inception in 2014 to its current status as a major player in the crypto market, is deeply intertwined with the development of the perpetual swap. Initially, the exchange targeted institutional hedgers, but it eventually catered to sophisticated retail traders seeking high-leverage speculation. By offering 100x leverage and a real-time margining system, BitMEX addressed the needs of these traders. The perpetual swap, launched in May 2016, introduced a futures contract with no expiry date, anchored to the spot price through a daily funding rate. This mechanism allowed longs and shorts to interact dynamically, with BitMEX taking no cut. The early funding rate was derived from third-party lending markets but was later adjusted to a dynamic approach, looking inward at the swap's trading activity. This solution enabled market makers to anchor the swap's price to the spot price, creating a dynamic equilibrium. The perpetual swap's impact on the crypto market has been profound, with BitMEX becoming the most liquid bitcoin market by 2017. The product's design concentrated liquidity, resulting in tighter spreads and a more liquid market. Competitors took notice, with many exchanges offering their own perpetual swaps, adopting the funding rate architecture pioneered by Delo. The fact that every major exchange in crypto now offers a perpetual swap is a testament to its financial innovation. With the product attracting the attention of traditional finance regulators, Delo believes that once its benefits are recognized, it will have a significant impact.