Why are the quoted prices and chart prices different?

Why are the quoted prices and chart prices different?

In order to use more accurate information in strategy tests, Titan FX displays interbank spreads which is Blade account spreads on MT4/MT5 charts regardless of your account type. If you have a Blade account, please refer to the Bid and Ask values displayed on the chart as they are. If you have a Standard account, the spread is slightly different from that of a Blade account, so please refer to the Bid and Ask values on the quote or one-click trading, not on the chart itself.