One-click trading on prop accounts: what can go wrong

[FXS London Scalper]

A single double click can end a prop challenge. With one-click trading on, two full-size positions can open in a second, and a fast move can take the drawdown limit before you react.

Ways to reduce the risk:

• Turn one-click trading off during the challenge, or at least on charts you're only watching.
• Set the default volume to your normal size, not a larger one used on another account.
• Use a trade panel or script that blocks orders above a maximum size.
• Use a separate terminal for the prop account, with no other accounts logged in.

If it happens anyway: close the extra position immediately, don't try to manage it as a trade. Then check whether the firm counts it as a rule breach, for example on lot limits.

A worked example: a firm with a 5% daily limit and a trader risking 1% per trade. Two accidental extra positions at the same size, stopped out in a fast move with slippage, can approach 3% in seconds.

Has anyone set up a lot-size block that works on MT5?