What Is a Stop Loss and How to Set One

A stop loss is an order designed to exit a position when the market moves against you. It is one of the most important tools in trading because it turns a vague risk limit into an executable instruction.

On leveraged perps, a stop loss is not optional discipline. It is how you try to exit before liquidation becomes the platform's forced exit.

What Is a Stop Loss?

A stop loss triggers when a chosen price condition is met. For a long position, the stop is usually below entry. For a short position, the stop is usually above entry.

The goal is to define the loss while the trade is still rational. Without a stop, traders often wait, hope, widen risk, or freeze as the position gets worse.

A Stop Is Not a Guaranteed Fill

Stop Market vs. Stop Limit

Most platforms offer two common stop types — and the right one depends on whether you prioritise certainty of exit or certainty of price.

For leveraged perps, stop market orders are often safer for pure risk control because exiting matters more than getting the perfect price. Stop limits leave you exposed if the market keeps moving past your limit.

Trigger Price · Mark, Last, or Index

A stop can trigger from different price sources depending on the venue:

Mark-price triggers can reduce false stops from one odd last trade. Last-price triggers can respond faster to actual traded momentum. There is no universally best trigger — know which one your platform uses.

Stop Loss vs. Liquidation

Liquidation is the platform reducing or closing your position because margin has fallen below requirements. A stop loss is your own planned exit.

How to Place a Stop

Good stops are tied to the trade thesis, volatility, and leverage. The four common framings:

The strongest approach combines these: a logical invalidation level, volatility awareness, and a position size that keeps the dollar loss acceptable.

Position Size Comes Before Stop Placement

A common mistake is choosing a position size first and forcing the stop to fit. Better sequence:

If the resulting position is smaller than you wanted, that is information. The trade needs too much room for the amount you wanted to risk.

Funding and Stops

Funding changes your effective breakeven over time. If you are paying funding, your account equity declines even if price is flat. On high leverage, that can bring liquidation closer and make a tight stop less effective.

For multi-day positions, account for expected funding payments, trading fees, slippage, whether funding could flip, and how close liquidation sits behind the stop.

Common Stop Loss Mistakes

Trailing Stops

A trailing stop moves in your favour as price moves in your favour. If you are long and price rises, the trailing stop rises behind it. If price reverses by the chosen trailing distance, the stop triggers.

Trailing stops can help protect gains without manually updating the order. They work best in trending markets — they perform poorly in choppy ones where normal pullbacks trigger exits.

Not every venue supports trailing stops. If it does, understand whether the trail is based on mark price, last price, percentage distance, or absolute price distance.

Further Reading

• Liquid docs: liquidations
• Liquid docs: leverage
• Liquid docs: funding rates
• What Is Liquidation and How to Manage It

Trade Perps with Stops on Liquid

Liquid lets you review leverage, liquidation price, and risk before confirming a trade.

• Create your account. Sign up with email or connect a wallet.
• Fund your account. Use supported funding methods or crypto deposits.
• Set the stop before entry. The risk plan should exist before the trade does.
• Monitor the position. Adjust only when the trade improves or your thesis changes — not because taking a loss feels uncomfortable.