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Roman5 Arbitrage Viewer for MT4

This indicator is a perfect tool able to compare which brokers have the lower latency. It shows us immediately which brokers are the slower one and the faster one. When you see the dot icon on the line it means this broker is the faster one and the red line (Broker_A) is the slower one. See the example on the screenshot.

How it works?

This indicator shares the prices information to and from the "shared" common data folder. It compares all the prices. The price is based on average by (Ask + Bid) / 2.

There are two conditions:

1. Gap is the difference between Broker A and Broker B prices. For example: Broker A price is 1.35115 and Broker B price is 1.35105 -- this is a 10 points gap.

Let's say set ShowArrow_TriggerGap_InPoint to 15 points it means when the gap is greater than or equal to 15 points then triggered.

2. Timestamp is to make sure that the fast broker prices are ahead of slow broker.

When these two conditions are met then the dot will be appeared on the chart. It comes with an alert that will sound whenever a new signal appears.

Note: You need to place this indicator on other MT4 platform and make sure that the both symbols are identical, then you will able to see more than one line. e.g. EURUSD and EURUSD.lmx will be fine. Maximum MT4 brokers are 8.

You are able to test on demo accounts only for free - See https://www.mql5.com/en/market/product/12487


  • TimerInMillisecond - This is re-scanning and looking for any new prices every 250ms. You can change the speed. Minimum is 50ms. Default is 250 milliseconds.
  • Write_To_CSV_Signals - Able to export the signals to CSV file so you won't miss out. The path location is ..\MQL4\Files\Roman5_ArbitrageViewer\. Default is True.
  • ShowArrow_TriggerGap_InPoint - When there is a gap between two brokers then it will place the dot. It just shows you that there is an opportunity for arbitrage. Default is 30 points.
  • WingdingsCode_ShowArrow_TriggerGap - This is the wingding fonts that appears on the chart. Default for dot icon is 159. See the wingdings code below.
  • AlertSound - You can choose to enable or disable the alert that will sound whenever a new signal appears.
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Versión 1.4 2016.08.04
Added better information on the indicator i.e. Gap, Buy#, Sell#
Versión 1.3 2015.11.03
-Added more information on broker's labels i.e. Signals #
-Improved symbol matched
-Support any symbol
-Added new parameter: Map_Symbol
Versión 1.2 2015.10.30
-Able to export the signals to CSV file so you won't miss out.
Versión 1.1 2015.10.26
Removed "Name_of_Broker" parameter. It is now automatically to display the name of the broker.