CoinDesk
Perpetual swaps, also called perpetual futures or "perps," process an estimated $40 to $50 trillion in annual volume and dwarf spot trading as the dominant instrument in crypto. They let traders take leveraged directional exposure to Bitcoin or Ether without holding the underlying asset, and unlike traditional futures they never expire.
The instrument was created by Ben Delo at BitMEX, which launched the first perpetual swap in May 2015 after years of friction with expiry-dated contracts. BitMEX spent the better part of a year shortening durations, moving from quarterly to monthly to weekly to 48-hour to 24-hour expiries, but none of that solved the persistent basis premium that confused retail traders. Delo's solution removed the expiry entirely and replaced it with a self-correcting funding mechanism that every major derivatives venue now uses.
Why it matters
Every eight hours, longs and shorts exchange a payment tied to how far the perpetual swap has drifted from spot. When the perp trades above spot, longs pay shorts. When it trades below, the payment flips. The exchange takes no cut, and the rate scales with the size of the deviation, which makes holding a crowded side expensive and pulls price back toward equilibrium. Market makers amplify the effect by shorting the perp and buying spot whenever a meaningful premium opens up.
The instrument's other defining feature is leverage. BitMEX in its prime offered up to 100x, meaning a 1% move in Bitcoin produced a 100% gain or loss on a fully leveraged position. Automated liquidation engines close positions before losses exceed deposited margin, and the speed of those engines became a central competitive battleground between venues.
Market impact
Perps are now where Bitcoin's price is discovered. Sharp moves typically originate in perpetual markets before propagating to spot. The CME is now exploring perpetual swap listings on equities, evidence that a structure built to fix a 2014-era crypto trading annoyance has become a candidate template for the broader derivatives industry.
Frequently asked questions
-
Who invented perpetual swaps and when?
Ben Delo developed the perpetual swap and BitMEX, co-founded by Arthur Hayes and Delo, launched it in May 2015 as a workaround for the basis premium and forced expiries that plagued early crypto futures.
-
How does the funding rate keep perps tethered to spot?
Every eight hours longs and shorts exchange a payment. If the perp trades above spot, longs pay shorts; if below, the payment flips. The rate scales with the size of the deviation, making crowded positions expensive and pulling price back toward spot without any exchange fee.
-
Why do perpetual swaps dominate crypto trading volume?
They offer leveraged directional exposure to Bitcoin or Ether without owning the asset and never expire, so traders can hold positions as long as they want. Annual volume is estimated at $40 to $50 trillion, dwarfing spot.
-
How much leverage is available on perpetual swaps?
Limits vary by platform and jurisdiction. BitMEX at its peak offered up to 100x leverage, meaning a 1% move in Bitcoin produced a 100% gain or loss on a fully leveraged position.
-
Why are regulators looking at perps for traditional markets?
Perps have become the primary venue for Bitcoin price discovery, with sharp moves originating in perp markets before spreading to spot. The CME is now exploring perpetual swap listings on equities, suggesting the structure may become a template beyond crypto.
CryptoSlate
Crypto Rank News
TheBlock
Lookonchain
WuBlockchain