Guaranteed vs non-guaranteed stops

Stops that hold, stops that don't

A stop loss order is the price at which your broker will close your trade to limit further loss. There are two kinds. A standard stop — sometimes called a non-guaranteed stop — is the default. It converts to a market order when the trigger price is hit, and fills at whatever the next available price is. In calm markets, that's basically the price you placed it at. In fast markets, it can fill significantly worse.

A guaranteed stop loss order, sometimes shortened to GSLO, is exactly what it sounds like. The broker guarantees you'll be filled at the exact stop price you placed, no matter what happens in the market. If the price gaps right past your stop, the broker absorbs the slippage and you still exit at your level. For that protection, the broker charges a premium — usually a wider spread on the position, or a small per-order fee.

When is a guaranteed stop worth the cost? Three situations stand out. First, holding positions through major news events when slippage is most likely. Second, holding overnight or over weekends on instruments that can gap — single stocks, indices around earnings, commodities around supply shocks. Third, on highly leveraged positions where a slipped stop could blow up your account well past your planned risk.

When is a non-guaranteed stop fine? Most of the time, honestly. If you're trading liquid majors during the London or New York session and you're not holding through a known event, the slippage on a standard stop is usually fractions of a pip. Paying the guaranteed-stop premium on every trade is overinsurance. Treat guaranteed stops like flood insurance: cheap to skip when the risk is low, very expensive to skip when the risk is real.

Recap: standard stop = fills at next available price, can slip. Guaranteed stop = fills exactly at your price, costs a premium. Use GSLOs for events, gaps, and overnight risk. Skip them for routine intra-session trades.