Unlocking the Mystery of Perpetual Swaps: The Driving Force Behind Crypto's Most Popular Trading Instrument

Perpetual swaps, also known as 'perps,' have become the go-to instrument for professional traders, hedge funds, and retail investors seeking leveraged exposure to cryptocurrency prices without actually owning the underlying assets. Despite their widespread use, the mechanics behind perps remain poorly understood. To grasp the concept of perps, it's essential to examine their predecessors. Traditional finance typically offers leveraged exposure to assets through futures contracts, which involve an agreement to buy or sell at a predetermined price on a specific date. However, this approach created persistent problems in the early days of crypto. Futures contracts often traded at a premium to the spot price, causing confusion among retail traders seeking straightforward exposure. Furthermore, when contracts expired, positions were closed regardless of the traders' intentions. BitMEX, a derivatives exchange founded in 2014, attempted to address these issues by shortening contract durations, but this proved insufficient. The breakthrough came with the introduction of perpetual swaps, which eliminated the expiry date entirely. This innovation enabled traders to hold positions for any duration, creating a derivative contract that tracks the asset price indefinitely. To maintain equilibrium, a mechanism was introduced wherein traders on opposite sides of the market exchange payments every eight hours. If the perpetual swap price exceeds the spot price, long-position traders pay short-position traders, and vice versa. This funding rate is calculated based on the deviation between the perpetual swap price and the spot price over the preceding eight-hour window. The further the deviation, the higher the funding rate. This self-correcting mechanism has become the industry standard. Perpetual swaps also offer leverage, allowing traders to control positions significantly larger than their deposited capital. To mitigate the risks associated with leverage, exchanges employ automated liquidation systems that close positions before they can incur significant losses. The reliability and speed of these systems have become a key differentiator in the market. Today, perpetual swaps have become the primary venue for price discovery in crypto, with price movements often originating in perp markets before spreading to spot markets. The structure of perpetual swaps has proven durable, and regulators are now exploring its application to traditional assets, potentially paving the way for perpetual swaps on equities.