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

In 2015, a hike in Hong Kong's countryside sparked an idea that would forever alter the landscape of cryptocurrency trading. Ben Delo, BitMEX's co-founder and a mathematician, was trekking with a friend, Bavik, a derivatives trader, when he posed a question that had been plaguing him for months. BitMEX had experimented with various futures contracts - quarterly, monthly, weekly, 48-hour, and even 24-hour - but none had gained traction. Customers complained about positions closing unexpectedly, seeking a product that mimicked spot trading but offered the leverage of derivatives. Delo's query, "What if a future never expired?", was met with Bavik's immediate response, "Mathematically, it would be worth infinity." Although technically correct, Bavik proposed a solution: charge traders the bitcoin overnight rate, akin to LIBOR in traditional finance. However, Delo was unaware of such a rate, prompting him to create it. This innovation would become one of the most significant financial products of the 21st century. The perpetual swap's launch in May 2016 was low-key, with a straightforward mechanism: a futures contract with no expiry date, anchored to the spot price via a daily funding rate. Longs paid shorts, or vice versa, depending on whether the swap was trading above or below spot. Initially, the funding rate was derived from third-party lending markets, but as Bitcoin's price rose, demand for long exposure overwhelmed the mechanism. The contract price drifted away from the actual Bitcoin price, prompting Delo to dynamically adjust the funding rate calculation. The new approach looked inward at the swap's trading activity, rather than external lending markets. This solution, which measured the gap between the swap and spot prices over an eight-hour window, has become the standard for major derivatives exchanges worldwide. By 2017, BitMEX was the most liquid Bitcoin market, processing $3-4 billion daily, with the perpetual swap at its core. The product's success can be attributed to its design, which consolidated liquidity into a single instrument. Competitors took notice, with some copying the concept and others developing their own versions. Today, the perpetual swap is a cornerstone of cryptocurrency trading, with an estimated $40-50 trillion in annual turnover. BitMEX chose not to patent the product, instead focusing on development. The market's response has been resounding, with traditional finance regulators now taking notice. The CFTC is reportedly making room for perpetual swaps, and speculation surrounds the CME's potential listing of these products on equities. For Delo, this prospect is the ultimate validation of an idea born on a Hong Kong hillside, which has revolutionized the trading landscape.