What Are Perpetual Futures and Why Do They Dominate Crypto Trading?
Perpetual futures are derivative contracts that let traders take leveraged long or short positions on an asset's price with no expiry date. Instead of settling on a fixed day like traditional futures, perpetuals use a periodic funding rate exchanged between longs and shorts to keep the contract price anchored to spot — a design that made them the default instrument of crypto derivatives trading.
Published August 10, 2026 · Coinfuty — figures on this page are generated from Coinfuty’s aggregated live feed and refresh automatically. Latest update: August 10, 2026, 11:03 UTC.
What is a perpetual futures contract?
A perpetual futures contract — a “perp” — is a derivative that tracks the price of an asset and never expires. Opening a long position profits if the price rises; a short profits if it falls. No coins change hands: the position is a contract against the exchange’s order book, collateralized by margin, and it stays open for as long as the trader maintains that margin — a day, a month, or a year.
Three properties define the instrument. It carries no expiry date, so there is nothing to roll over. It is leveraged: margin is a fraction of the position’s notional value, which multiplies both gains and losses. And it is tethered to the spot price not by settlement — there is none — but by a funding rate exchanged periodically between longs and shorts. Nearly all of the open interest tracked on this site sits in contracts of exactly this type.
How big is the perpetual futures market?
As of the latest update, total crypto futures open interest across all tracked exchanges stands at $97.61B (+1.17% over the past 24 hours). The overwhelming majority of that figure is held in perpetual contracts rather than dated futures — on most crypto exchanges, perpetuals are the flagship product and often the only futures product listed for smaller coins.
For scale: at publication on August 10, 2026, total open interest across tracked exchanges stood near $98 billion — capital committed to open positions at this moment, the bulk of it in perpetuals. No single venue holds a majority, which is why market-wide readings have to be aggregated; the full per-coin breakdown lives on the open interest page.
How do perpetual futures differ from traditional futures?
A traditional futures contract is an agreement to transact at a set price on a set date. The date does the anchoring: as expiry approaches, the futures price converges to spot because the contract is about to become spot. Remove the date — as the perpetual does — and a different anchoring mechanism has to take its place. Every other difference follows from that swap:
| Property | Traditional futures | Perpetual futures |
|---|---|---|
| Expiry | Fixed date (often quarterly) | None — open indefinitely |
| Price anchor | Convergence at settlement | Periodic funding payments |
| Holding cost | Roll cost at each expiry | Continuous, variable funding |
| Long-term exposure | Chain of contracts, rolled | Single position, held |
| Typical collateral | Fiat or the underlying | Stablecoins or the coin itself |
Neither design is free. Traditional futures charge the cost in lumps — every expiry forces a roll, with fees and spread paid each time. Perpetuals convert that lump into a drip: funding accrues continuously and its rate floats with market positioning, sometimes paying the holder instead of charging them.
How does the funding rate keep a perpetual near spot?
The funding rate makes deviation from spot expensive. When the perpetual trades above the spot price — longs are crowding the contract — the rate turns positive and longs pay shorts, rewarding the side that pulls the price back down. When the perpetual trades below spot, the flow inverts: funding goes negative and shorts pay longs. The payment cycles every few hours on most exchanges, and no exchange keeps the money — it moves between traders.
The OI-weighted average funding rate across all tracked coins is currently +0.0038% — on balance, longs are paying shorts. 85 of the 504 coins with a live funding rate are currently negative.
Because the rate is set by positioning, it doubles as a sentiment gauge: persistent positive funding means the market is paying a premium to be long, persistent negative funding the reverse. The funding matrix shows the current rate for every coin and exchange, along with accumulated windows that reveal what holding a position has actually cost.
Why did perpetuals become the default in crypto?
Because they fit how crypto actually trades. The market runs 24 hours without settlement calendars, participants range from retail to funds, and thousands of assets are too small to support a ladder of quarterly contracts each. The perpetual answers all three constraints at once: one contract per asset, no maintenance dates, and leverage from stablecoin collateral.
Concentration then feeds itself. A single perpetual per coin pools all speculative interest into one order book instead of splitting it across expiry months, so the perp becomes the most liquid venue — which attracts the next trader, deepening it further. That is why a coin’s perpetual is usually its most active market, and why perpetual open interest is the standard yardstick for positioning.
Example (illustrative numbers): suppose a trader wants six months of $10,000 long exposure. With quarterly futures, that takes two contracts back to back — at expiry the first is closed and the second opened, paying fees and crossing the spread both times, at whatever the basis happens to be that day. With a perpetual it is one position and zero rolls; if funding averaged the common baseline of 0.01% per 8-hour cycle for the whole period, the accumulated cost would be roughly $55 per $10,000 — paid in tiny increments, at a rate that floated the entire time and could even have turned into income during negative-funding stretches.
What are the risks of trading perpetual futures?
The same two properties that make perpetuals efficient make them dangerous. Leverage shrinks the price move needed to exhaust margin: at 10x, a roughly 10% adverse move can wipe the position; at higher multiples the buffer collapses to a few percent. When margin runs out, the exchange force-closes the position — a liquidation — and clustered liquidations can chain into cascades as each forced close pushes the price into the next trader’s trigger.
The subtler risk is the funding drip. A rate that looks negligible per cycle compounds into a meaningful annual drag on positions held through persistently one-sided markets, and it floats with crowd positioning — precisely when a trade is most popular, holding it costs the most. None of this is an argument for or against the instrument; it is the cost structure that the metrics on this site — open interest, funding, liquidations — exist to make visible.
See the live data
Frequently Asked Questions
Do perpetual futures ever expire?
No. A perpetual contract has no settlement date — it remains open until the trader closes it or the position is liquidated for falling below margin requirements. That is the defining difference from traditional futures, which settle on a fixed calendar date.
What happens if you hold a perpetual futures position for months?
The position keeps working exactly as on day one, but funding payments accumulate the whole time. If the rate averages positive and you are long, you pay that stream; if you are on the receiving side, you collect it. Over long horizons the accumulated funding can rival the price move itself, which is why funding pages track accumulated windows, not just the current rate.
Are perpetual futures the same as margin trading?
No. Margin trading borrows real assets to trade on the spot market, so interest is paid to a lender and the asset itself changes hands. A perpetual is a derivative: no underlying asset moves, exposure comes from a contract, and the cost of holding it is the funding rate rather than a borrow rate.
Why is perpetual futures open interest measured in dollars?
Because contracts across exchanges have different sizes and collateral types, counting them in raw contract units is meaningless market-wide. Valuing every open contract at the current price puts all venues on one scale, which is what allows open interest to be aggregated across the whole market.
Can a perpetual futures position lose more than its margin?
On most crypto exchanges, no — the liquidation engine closes the position when its margin is exhausted, and insurance funds absorb overshoot in fast markets. The practical risk is that liquidation happens sooner than expected: at high leverage, a move of a few percent is enough to wipe the margin entirely.