Our One-tap reverse feature allows you to instantly flip your position (from long to short or vice versa) without having to manually close and reopen trades. This not only saves time but helps you react more strategically when momentum shifts suddenly.Why should I use one-tap reverse? React instantly to market reversals: when trends shift quickly, manually closing and re-entering a trade wastes precious seconds.

Selecting the button reading "call" or "put" on an option leg will flip this value to its opposite.How do I change the type of a future or perpetual from "coin margined" to "USDT margined" or vice versa on the builder? Selecting the button reading "Coin" or "USDT" on a future or perpetual leg will flip this value to its opposite, provided the selected instrument has a corresponding Coin or USDT future or perp listed on OKX.What does the "Est. Value" refer to?