How to trade perps on a DEX

What a perpetual future is

A perpetual future tracks the price of an asset without an expiry date. You go long if you expect the price to rise, short if you expect it to fall, and leverage multiplies both directions, because the venue only asks you to deposit a fraction of the position value as margin. That fraction is why a small move in the asset becomes a large move in your collateral.

Funding is what keeps the contract near the spot price: a periodic payment between longs and shorts, charged for as long as the position stays open. Liquidation is the other end of the mechanism. When the margin can no longer cover the loss, the venue closes the position for you, and it does not ask first.

Choosing a perp DEX: fees, leverage, markets and KYC

The four venues listed with this guide cover the range. Hyperliquid publishes 0.045% taker and 0.015% maker across seven volume tiers and caps leverage at 40x on 234 perp markets. Aster charges 0.04% taker and 0% maker, lists 610 markets and advertises 1001x in its Degen Mode, while the Pro order book caps at 100x. Lighter is free by default, 0% maker and taker, at the cost of 300ms of taker latency on a 50x book of 210 markets. Variational charges no trading fee and keeps the spread, publishes no leverage cap, and opens with an EVM wallet.

1. Compare the base-tier maker and taker rates, not the headline number.
2. Read what the documentation says about identity: Hyperliquid, Lighter and Variational open with a wallet, and Aster documents no check either way.
3. Match the venue to the markets you trade, and treat the highest leverage cap as a warning rather than a target.

Depositing collateral on a perp DEX

Deposits are chain-specific, and that is where first attempts usually go wrong. Hyperliquid takes USDC arriving mainly through Circle's CCTP from Arbitrum, with no native on-ramp in euros. Aster accepts USDC or USDT, Lighter accepts USDC on a ZK rollup anchored on Ethereum with a documented escape hatch, and Variational takes USDC through a gasless deposit, charged a flat $0.10 on each deposit and withdrawal.

1. Send a small test deposit first, on the chain and in the asset the venue documents.
2. Open the app by typing the domain yourself: hyperliquid.xyz, asterdex.com, lighter.xyz, variational.io.
3. Wait for the balance to show up before adding more collateral.

A first order you can justify

Prudence here is not a mood, it is four settings. Prefer isolated margin for a new position when the venue offers a margin mode, so a loss stays inside that trade instead of reaching the rest of the account. Keep leverage well below the platform cap: 40x at Hyperliquid and 50x at Lighter are maximums, not sizes. Place the stop-loss with the order rather than after it, and size the position so that being stopped out is a loss you would accept on any other day.

1. Choose isolated margin for a first trade and leave the rest of the balance out of it.
2. Set leverage low, well under the platform cap.
3. Attach the stop-loss when you place the order, and size so a full stop-out stays an inconvenience.

Funding and the liquidation price, with a simple example

Take $1,000 of collateral and a 10x position: the notional is $10,000, and the venue holds your $1,000 against it. A move of about 10% against that position costs roughly $1,000, which is the whole margin. That is liquidation, and it happens before fees and before the funding already paid. At 2x, the same 10% move costs about $200, a fifth of the collateral.

Two details move that line. Funding accrues while the position is open, so the longer you hold, the closer the liquidation price sits, and pool venues add borrow on top: GMX charges 0.04% to 0.06% per open or close plus borrow and price impact, and Jupiter Perps adds an hourly borrow fee. Some venues document the mechanics precisely, which is worth reading once: Variational executes a forced liquidation 0.5% away from the bid or ask.

Referral links: what the referee actually gets

A referral code changes your costs, not your risk. Hyperliquid gives the referee 4% off fees on the first $25M of volume, Lighter one week of Premium with the fees paid during that week rebated, and Aster lets you choose how the default 10% commission is split, so part of it can come back as a discount. Variational pays the referee 1 point for every 10 points earned.

Where nothing is documented, nothing should be promised: Jupiter Perps and Veranta publish no referee benefit on their cards, so there is no discount to expect there. A rebate on a losing position is still a losing position.

The mistakes that cost money

Over-leverage comes first: the caps in this series run from 40x to 1001x, and a cap describes what a venue allows rather than what a position survives. Trading without a stop is the second mistake. Phishing is the third, because a copied interface needs one signature to empty a wallet, which is why the domain is typed by hand.

The fourth is farming points at any price: Aster's campaigns reward volume with points, and its normalized volume on DefiLlama sits well below its reported volume, which is the clearest sign that paid-for activity is not liquidity. The last is impatience. Lighter's free matching is deliberately slower than its paid tier, and Veranta's fee depends on which side of the open interest you take, from 0.001% to 0.045%.