Uncovering Perps: The Ultimate Guide to Crypto's Most Popular Trading Instrument

Perpetual swaps, commonly referred to as 'perps,' have revolutionized the crypto trading landscape by providing a unique instrument for investors to gain leveraged exposure to assets like bitcoin without actually owning them. With their ability to process massive trading volumes, perps have overshadowed spot trading and become the go-to choice for professional traders, hedge funds, and retail speculators alike. However, the intricacies behind their operation remain poorly understood by many. To grasp the concept of perps, it's essential to delve into their historical context. In traditional finance, investors typically rely on futures contracts to gain leveraged exposure to an asset, which involves agreeing to buy or sell at a predetermined price on a specific date. Upon expiry, the contract is settled, and traders must roll over their positions to maintain exposure. The early days of crypto trading were plagued by issues stemming from this practice, including the 'basis' phenomenon, where futures traded at a premium to the spot price of bitcoin, causing confusion among retail traders seeking straightforward exposure. Furthermore, the expiry of contracts would often result in the involuntary closure of positions, regardless of the traders' intentions. In an attempt to mitigate these issues, BitMEX, a derivatives exchange founded in 2014, experimented with shortening contract durations, transitioning from quarterly to monthly, weekly, 48-hour, and eventually 24-hour expiries. However, these efforts proved insufficient. The introduction of perpetual swaps in 2016 marked a significant turning point. By eliminating the expiry date, these contracts enabled traders to maintain positions indefinitely, thereby resolving the problems associated with traditional futures contracts. The absence of an expiry date created a structural challenge, as there was no natural mechanism to pull the contract price back toward the spot price of the underlying asset. To address this, BitMEX implemented a funding rate mechanism, which has since become an industry standard. Every eight hours, a payment is exchanged between traders on opposite sides of the market, with the rate calculated based on the deviation between the perpetual swap price and the spot price over the preceding eight-hour window. This self-correcting mechanism ensures that the contract price remains aligned with the spot price. The funding rate mechanism is now widely adopted by major derivatives exchanges worldwide. Another key feature of perpetual swaps is leverage, which allows traders to control positions significantly larger than their deposited capital. To manage the associated risks, exchanges employ automated liquidation systems, which close positions before they can incur negative balances, thereby protecting the exchange from potential losses. The reliability and speed of these liquidation engines have become a critical differentiator in the competitive exchange landscape. Today, perpetual swaps have emerged as the primary venue for price discovery in crypto, with price movements often originating in perp markets before spreading to spot markets. The structure developed by BitMEX in 2016 has proven robust enough that regulators in the U.S. are now exploring its application to traditional assets, with the potential listing of perpetual swaps on equities by the CME. What began as a solution to the limitations of crypto futures has evolved into one of the most widely traded financial products globally.