Guaranteed Stop-Loss Order

A guaranteed stop-loss order closes a position at exactly the level you set, with no slippage, even if price gaps straight through it. An ordinary stop is an instruction to close at the next available price; a guaranteed stop is a contractual commitment by the broker to honour the level whatever the market does in between. That certainty is sold rather than given. Brokers charge a premium for it — some only when the stop is actually triggered, others as a fee or a wider spread at entry — and usually restrict which instruments and account types can use one, along with a minimum distance from the current price. Availability differs by broker and by jurisdiction. What you are buying is protection against a specific event, the gap, not against ordinary variation in fills.