Hyperliquid vs dYdX vs GMX vs Aevo vs Extended: Perp DEX Comparison (2026)

/ 2026 Market Share & Volume Breakdown: Hyperliquid vs GMX vs dYdX vs Aevo

The perp DEX market has consolidated fast. As of May 2026, Hyperliquid holds roughly 70%+ of on-chain perpetuals volume. That's not a niche position — it's a structural shift in where traders want to execute. The rest of the field splits a long tail: dYdX and GMX hold the legacy blue-chip share, Aevo owns the options-adjacent perps niche, and Drift remains the largest Solana-native venue — relevant if your capital already lives on Solana, but not a volume challenger to Hyperliquid at the market level.

The numbers: Hyperliquid regularly clears $8–12B in daily volume with around $7–9B in open interest. dYdX v4 runs $400–700M daily with $400–500M OI. GMX v2 sits below that, with volume driven largely by its GM pool structure rather than directional speculation.

What explains the gap? Hyperliquid solved something the others didn't: it made on-chain trading feel like using a real exchange. Full on-chain CLOB, no gas fees on orders, sub-second fills, a public leaderboard, and 311+ markets including commodities and equity indices via HIP-3. Arthur Hayes noted in March 2026 that Hyperliquid offers the lowest slippage on Bitcoin perpetual trades in the $100K–$10M range across all DEXs.

/ Liquidity: three models, three failure modes

Hyperliquid runs a fully on-chain central limit order book on its own L1. Market makers quote into a real book, and spreads on BTC and ETH are consistently tight — comparable to mid-tier CEXs. No gas cost on order placement or cancellation means market makers can quote aggressively, and professional desks (including shops routing flow from CEXs) are actively quoting here.

GMX's liquidity comes from GLP and GM pool depositors, not a book. Trades execute against oracle prices (Chainlink + supplementary feeds), so you don't move the market — you buy from the pool at the index price. The constraint shows at extremes: when positioning gets one-sided, GMX discourages additional flow through negative funding and position caps. This protects LP capital but means GMX liquidity can disappear exactly when trend-continuation traders need it most.

dYdX v4 uses an off-chain order book with on-chain settlement on its Cosmos app-chain. The architecture is sound, but depth is thinner than Hyperliquid's — particularly outside BTC/ETH — and the market-maker relationships from v3 on StarkEx didn't fully carry over to v4. If liquidity depth is your primary criterion, the current state favors Hyperliquid by a wide margin.

/ Fee comparison: what you actually pay

The headline difference on a $10K BTC taker fill: $4.50 on Hyperliquid vs $7 on GMX. For a desk doing $50M/month in taker volume, that's $35K/month in fee difference. dYdX distributes monthly DYDX rewards based on fees paid, which can meaningfully reduce effective costs for high-volume traders, narrowing the gap at scale.

GMX's borrow rate on open positions is a cost that doesn't show up in headline fees. On a 10x leveraged ETH long held for a week, the borrowing cost can exceed the entry fee. Factor that in.

/ Funding Rate Arbitrage: Hyperliquid vs dYdX vs GMX

Funding is the cost most traders discover only after it has eaten their edge. The industry convention is an 8-hour funding rate: when longs crowd a market, longs pay shorts every interval, and holding a leveraged BTC or ETH position through a trending week can cost more in funding than in trading fees. The three venues here implement it differently, and the differences are exactly what funding arbitrageurs exploit.

Hyperliquid and dYdX v4 both settle funding in hourly increments rather than in three daily lumps, so the carry cost accrues smoothly — you can't dodge a payment by closing just before a timestamp, but you also never eat a full interval's charge for holding through one settlement (check each venue's docs for how the displayed rate is normalized before comparing numbers directly). GMX v2 is the structural outlier: instead of a pure peer-to-peer funding rate it combines a borrowing fee (paid to LPs for the capital your position reserves) with a funding component that rebalances long/short open interest — so on GMX you pay to hold a position even when positioning is balanced.

That asymmetry creates the classic perp-DEX carry trade: when BTC or ETH funding runs hot on one venue, arbitrageurs short the expensive-funding venue and hedge long on the cheaper one (or spot), collecting the differential while staying delta-neutral. It works precisely because funding rates across Hyperliquid, dYdX, and GMX don't move in lockstep — each venue's rate reflects its own trader positioning. For directional traders the practical takeaway is simpler: before opening a multi-day BTC/ETH position, compare the current funding on all three venues; the same trade can have a materially different carry cost depending on where you put it.

/ Risk analysis

GMX: oracle dependency is the primary risk. v2 improved this with multiple feeds and latency buffers, but it remains, and Arbitrum sequencer downtime directly takes GMX offline — this happened in early 2025 during a volatile period.

Hyperliquid: a smaller validator set than mature chains. The March 2026 JELLY token incident showed that coordinated attacks against specific markets are a real attack surface, and CFTC regulatory risk is non-trivial for on-chain CLOB venues.

dYdX: the off-chain indexer is the weakest point — if it goes down, new orders can't be placed even though on-chain settlement works. Thinner books mean liquidation cascades can be faster on mid-cap pairs.

/ Best option by use case

/ Extended Protocol Overview

Extended is a perpetual DEX built by a team with former Revolut experience, and its ambitions run wider than a single trading screen. Rather than shipping perps in isolation, Extended bundles perpetual trading with cross-asset collateral, unified (portfolio) margin, perpetual deposits, spot markets, and lending — an attempt to package most of a trader's on-chain activity inside one integrated venue.

In practice, the pitch is capital efficiency. Cross-asset collateral lets you post a basket of assets against positions instead of a single stablecoin, and unified margin nets exposure across positions so idle collateral does more work. The trade-off is maturity: an integrated stack only matters if its order books, oracles, and lending markets attract real, sticky liquidity. Extended is early relative to Hyperliquid, dYdX, GMX, and Aevo, so the right way to read it is as an emerging challenger whose design is interesting and whose liquidity and track record still have to be proven across multiple market cycles.

/ Where Extended Fits Against Hyperliquid, dYdX, GMX, and Aevo

Each venue in this comparison is strongest at something different, and Extended's angle is the integrated, capital-efficient trading stack rather than raw order-book depth. Here is how the five stack up at a glance:

Hyperliquid is strongest for deep order-book liquidity and broad market selection. dYdX is strongest for a battle-tested, compliance-leaning structure on major pairs. GMX is strongest for zero-slippage execution on large size and real LP yield. Aevo is strongest for on-chain options alongside perps. Extended is the one to watch for unified margin and cross-asset collateral inside a single integrated venue — compelling on paper, but newer and less liquidity-proven than the other four.