Perpetual futures — colloquially called “perps” — are the dominant derivative instrument in crypto markets. A perpetual future is like a standard futures contract (an agreement to buy/sell an asset at a price) but with no expiration date. Rather than expiring quarterly or monthly, perps never expire. The price is kept anchored to the spot market through a funding rate mechanism: when the perp trades above spot, long holders pay shorts; when it trades below spot, shorts pay longs. This creates an economic incentive for arbitrageurs to converge the price back to spot continuously. Perps were invented by BitMEX’s Arthur Hayes and Ben Delo in 2016 and became the dominant crypto derivatives product globally.
Origin: BitMEX’s Innovation
Standard futures contracts:
Traditional futures (on gold, oil, equity indexes) expire quarterly. Traders must roll (close and reopen) positions. Each roll has friction costs and creates artificial price patterns around expiry.
The problem with quarterly expiry for crypto:
In 2016, crypto markets had high volatility without the market-making infrastructure to maintain fair pricing across quarterly contracts. Arthur Hayes’ insight: create a contract that never expires, with the funding rate as the anchor.
BitMEX launched the XBT perpetual swap in 2016 — it became the highest-volume Bitcoin derivative product within a year. The perpetual swap structure has since been adopted by every major crypto derivatives exchange.
How the Funding Rate Works
The core mechanism:
Every 8 hours (standard interval), funding rate is calculated:
“`
Funding Rate = Clamp(TWAP of (Perp Mid-Price – Index Price) / Index Price, -0.05%, 0.05%)
“`
When perp > spot (market is bullish/overleveraged long):
- Funding rate is positive
- Long position holders PAY the funding rate to short holders
- Example: 8-hour funding of 0.01% = 0.03% daily = ~10.9% annualized
- This incentivizes: new shorts (to receive funding), existing longs to close
When perp < spot (market is bearish/overleveraged short):
- Funding rate is negative
- Short position holders PAY the funding rate to long holders
- Incentivizes new longs, encourages shorts to close
Net result: Funding rate pressure continuously arbitrages the perp price toward spot.
Leverage and Margin
Perps are margined products:
- Traders post collateral (margin) to open leveraged positions
- Initial margin: Required to open; sets maximum leverage
- Maintenance margin: Minimum to keep position open; dropping below triggers liquidation
Leverage examples (on Binance/Bybit):
- BTC: up to 125x leverage available (retail typically 2-10x)
- ETH: up to 100x
- Altcoins: 5-20x typical maximum
Isolated vs. cross margin:
- Isolated margin: Only the allocated margin can be lost for a specific position
- Cross margin: All account margin available for all positions (more efficient but riskier)
Liquidation
When price moves against a leveraged position:
- Position value drops below maintenance margin
- Exchange’s liquidation engine takes over
- Position is closed (market order) to prevent negative equity
- User may receive small “bankruptcy fee” if any margin remains
Liquidation cascades:
Large leveraged positions liquidated trigger market orders ? price moves further ? more liquidations ? cascade. These “long squeeze” or “short squeeze” events cause the dramatic 10-20% sudden moves visible in crypto markets.
Funding Rate as Market Sentiment Indicator
Funding rates are closely watched as a sentiment gauge:
- High positive funding (0.1%+ / 8h): Market is euphoric, heavily leveraged long — contrarian signal
- Consistently positive: Bull market positioning
- Negative funding: Fear/bearish positioning; potential contrarian long signal
- Sustained positive funding during altcoin season: mania signal
Ethena’s USDe protocol is directly built on collecting positive funding rates — its delta-neutral strategy earns the funding rate by holding short perpetual positions offset by spot collateral.
CEX vs. DEX Perpetuals
Centralized Exchange Perps:
- Binance (largest by volume), Bybit, OKX, BitMEX, dYdX v3
- Deeply liquid, low slippage, fast execution
- Counter-party risk: Exchange holds custody of margin
- KYC/AML required for most markets
Decentralized Exchange Perps:
- GMX (Arbitrum/Avalanche): Peer-to-pool model; GLP liquidity pool is the counterparty
- dYdX v4 (own Cosmos chain): Order book on-chain
- Hyperliquid: Pure on-chain order book, highest volume among DEX perps
- Gains Network (GTrade, Polygon): Synthetic perps using DAI vault
- Drift Protocol (Solana): AMM-based perps on Solana
DEX perp growth:
DEX perp volume grew from <1% to ~5-10% of CEX perp volume during 2023-2024 as Hyperliquid specifically attracted significant volume.
Basis Trade
The basis trade is a classic arbitrage strategy enabled by perp funding rates:
- Hold spot BTC (long)
- Short BTC perp (positive funding ? receive payment every 8h)
- Net position: delta-neutral (no price exposure)
- Collect funding rate as yield
This is the exact strategy Ethena’s USDe implements at scale ($3B+). At 15-25% annualized funding rates during bull markets, this basis trade becomes very attractive. At near-zero or negative funding rates in bear markets, it earns nothing or costs money.
Social Media Sentiment
Perps remain the dominant crypto derivative in 2026, with CT daily commentary on funding rates as a market sentiment indicator. Elevated funding rates on BTC and ETH perps regularly trend as ‘market is overleveraged long’ signals. Liquidation cascade post-mortems attract thousands of engagements after every major correction.
Last updated: 2026-04
Related Terms
Sources
Hayes, A. (2019). Cryptoasset Valuation. SSRN.
Auer, R., Haene, P., & Holden, H. (2021). Multi-CBDC Arrangements and the Future of Cross-Border Payments. BIS Papers.
Binance Research. (2022). Perpetual Futures: Mechanics, Market Structure, and Funding Rate Dynamics.
Makarov, I., & Schoar, A. (2020). Trading and Arbitrage in Cryptocurrency Markets. Journal of Financial Economics, 135(2), 293-319.
Jain, D., & Bhatt, S. (2023). Liquidation Cascades and Systemic Risk in Crypto Derivatives. SSRN.