Crypto Newbie / Simulators / Perp DEX
Perp DEX Simulator — Long / Short / Leverage / Funding
Perpetual DEXes (Hyperliquid, dYdX, GMX, etc.) let traders take leveraged long or short positions that never expire. This simulator runs the same math: pick a side, set your margin and leverage, then drag the mark price slider to see PnL, liquidation, and funding payments react in real time. No wallet connection, no real money — just the mechanics.
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Account equity
$100.00
What is a perpetual contract?
A perp is a futures contract with no expiry date. To keep the contract's price (mark) anchored to the underlying spot (index), the exchange charges a small funding rate every 8 hours. When mark > index, longs pay shorts. When mark < index, shorts pay longs. That's the entire balancing mechanism — there's no settlement date, the position lasts until you close it (or get liquidated).
Leverage and liquidation — the trade-off
Leverage multiplies your position size relative to your collateral. 10× means a 5% favourable move doubles your money — and a 5% adverse move halves it. Push leverage higher and the liquidation price moves closer to entry: at 50× a 2% adverse move wipes you out. Most beginners blow up not because they're 'wrong' but because they're correctly directional with too much leverage and get stopped out in normal volatility before their thesis plays out.
Funding rate — the hidden cost of holding
Even when you're directionally right, funding can erode the position. A long ETH perp paying +0.05%/8h is paying 0.15%/day = 4.5%/month in funding. Hold long enough and funding alone wipes out the PnL. Conversely, when the funding rate flips negative (shorts pay longs), holding a long becomes free income — that's the rare but periodically profitable 'funding rate arbitrage' setup.
Why beginners should mostly avoid perps
Spot crypto is volatile enough on its own. Leverage on top of spot volatility means the median outcome for retail perp traders over a year is total account loss. The data is consistent across every public study: 80-95% of leveraged retail traders lose money. If you're going to touch perps anyway, start at 2-3× leverage, never risk more than 1-2% of your portfolio on a single trade, and use stop-losses pre-committed before entering.
Frequently asked questions
+What is the difference between a perp DEX and a CEX perpetual?
Mechanically they're nearly identical — same leverage, mark/index, funding mechanism. The difference is custody: on a CEX (Binance, Bybit) the exchange holds your collateral, on a perp DEX (Hyperliquid, dYdX, GMX) collateral stays in your wallet (or in a smart contract you can withdraw from). DEXes have higher transparency but generally lower liquidity for large orders.
+What happens at liquidation?
The exchange force-closes your position to cover the loss. You lose your collateral. On most perp DEXes there's also a small liquidation fee. You don't owe additional money beyond your margin — that's the trade-off for leverage; the exchange doesn't extend credit, you posted the collateral up front.
+How is liquidation price calculated?
It's the mark price at which your account equity (collateral + PnL) drops to the maintenance margin requirement. For a long: liq = entry − (margin − maintenance) / position size. Higher leverage = smaller distance between entry and liquidation.
+Why does the funding rate matter for short-term traders?
Less for traders who hold under 8 hours — they avoid the funding window entirely. But for traders holding through multiple 8-hour periods, funding compounds and can flip a winning thesis into a losing position. Always check the current funding rate before opening a multi-day trade.
+Can I lose more than my margin?
On most perp DEXes with proper auto-liquidation, no. The exchange closes the position before equity hits zero, so you lose the margin but don't owe extra. In extreme volatility (gap moves through liquidation), the position can socialise loss across the insurance fund — but the trader doesn't pay more than the collateral they posted.
+What leverage should a beginner use?
Honest answer: 0 — don't trade perps as a beginner. If you must, start at 2-3× as a way to learn the mechanics with smaller dollar exposure. The 50× max leverage advertised by most perp DEXes is a marketing number, not a recommendation.