How to Trade Perpetuals on GMX

Who should skip this?

Skip GMX perps if you have not used a wallet on Arbitrum, you cannot explain funding and liquidation in one sentence, or you need a CEX with customer support. Perps can wipe the margin. Start with a spot swap guide, not with leverage.

• You have never bridged to Arbitrum or paid an L2 gas fee
• You cannot afford to lose the entire margin
• You wanted Uniswap-style spot, not a leveraged future

Should you trade perps on GMX?

Only if you already know what a liquidation price is and you can lose the margin without changing your life. GMX lets you long or short majors on Arbitrum and Avalanche against pool liquidity. It is not a beginner product dressed up as a swap.

Prefer Hyperliquid if you want an order-book feel and the deepest perp DEX volume. Prefer GMX if you are already in the Arbitrum ecosystem and you accept the GLP/GM pool model. Prefer a CEX if you need fiat off-ramps and a help desk. Prefer not trading perps at all if any of those sentences were unclear.

What is GMX and how does it work?

GMX is a perpetual futures DEX. You post collateral, choose long or short, and the protocol uses a liquidity pool (historically GLP; GM pools on V2) as the counterparty instead of a central limit order book. Traders pay or receive funding; pool depositors take the other side of trader PnL and earn fees.

That design is why GMX feels different from Hyperliquid. There is no matching engine of bids and offers in the CEX sense. Execution quality depends on oracle prices and pool inventory. Official app: app.gmx.io (checked August 2026). Confirm the URL; clones ask for token approvals that drain wallets.

How do you open a first GMX position?

Bridge a small amount of USDC or ETH to Arbitrum, open the official app, deposit collateral, then place a tiny 2× ETH position you are willing to close the same day. The goal is to see liquidation price and fees, not to make money.

1. 01

   Get onto Arbitrum

   You need ETH on Arbitrum for gas. Use the official Arbitrum bridge or a reputable alternative; wait for the deposit to show before trading.

2. 02

   Open app.gmx.io

   Connect MetaMask or Rabby. Switch the wallet network to Arbitrum One (chain ID 42161). Reject any site that asks you to 'sync wallet' via a seed phrase.

3. 03

   Deposit collateral

   Move USDC or ETH into the GMX account / position collateral as the UI requires. This is not a CEX deposit — it is a smart-contract interaction. Read the spender.

4. 04

   Quote the trade

   Select ETH or BTC, Long or Short, leverage 2–3×, size you can lose. Note entry, fees, and liquidation price. If liquidation is close to spot, reduce size or leverage.

5. 05

   Close on purpose

   Exit with a market or limit close. Withdraw remaining collateral. A first session that ends flat minus fees is a successful drill.

What are GMX's hidden catches?

GMX does not hide a booking fee. The catches are leverage, spread, borrowing/funding costs, oracle-marked liquidation, and GLP/GM pool risk if you are the liquidity provider rather than the trader.

Catch 1 — spread and fees eat small scalps. Catch 2 — liquidation is not a polite email; the position is gone. Catch 3 — pool depositors (GLP/GM) earn fees but pay trader profits. Catch 4 — Avax and Arbitrum deployments are different liquidity islands; do not assume one margin covers both.

The verdict: should you use GMX?

Use GMX if you already live on Arbitrum, you can explain liquidation, and you size positions to survive a 5–10% wick. Skip it if you wanted a swap, a savings rate, or a venue that will unwind a mistaken trade for you.

For spot on Arbitrum, use a DEX aggregator or Uniswap. For the highest-volume on-chain order book, compare Hyperliquid. For lending yield without leverage, use the Aave supply guide. Perps are optional; they are never a beginner milestone.