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How to build forex mt4 ev investopedia?

Forex trading is rapidly gaining popularity as a means of investment. The forex market is the largest financial market in the world, with over $5 trillion worth of trades taking place daily. The MetaTrader 4 (MT4) platform is the most widely used forex trading platform, which allows traders to access the forex market and execute trades. In this article, we will explain how to build a forex MT4 EA (Expert Advisor) using Investopedia.

Step 1: Define your Trading Strategy

Before building your forex MT4 EA, you need to define your trading strategy. A trading strategy is a set of rules that you follow to enter and exit trades. Your trading strategy should be based on technical analysis, fundamental analysis, or a combination of both.


Technical analysis involves analyzing charts and identifying patterns and trends to determine future price movements. Fundamental analysis involves analyzing economic, financial, and other qualitative and quantitative data to determine the value of a currency.

Once you have defined your trading strategy, you need to translate it into a set of rules that your forex MT4 EA can follow. These rules should include entry and exit points, stop-loss and take-profit levels, and other parameters that will guide your trading decisions.

Step 2: Choose a Programming Language

MT4 supports two programming languages; MQL4 and MQL5. MQL4 is the older version and is widely used, while MQL5 is the newer version and has more advanced features.

If you are new to programming, we recommend starting with MQL4 as it is easier to learn. However, if you have experience in programming and want to take advantage of the advanced features, you can choose MQL5.

Step 3: Learn the Basics of Programming

To build a forex MT4 EA, you need to have a basic understanding of programming. You need to learn the syntax, data types, variables, and other programming concepts.

Investopedia has a comprehensive tutorial on programming in MQL4, which includes the basics of programming, data types, variables, functions, and other programming concepts.

Step 4: Build the Forex MT4 EA

Once you have learned the basics of programming, you can start building your forex MT4 EA. There are two ways to build an MT4 EA; either you can write the code from scratch or you can use a forex EA builder.

If you choose to write the code from scratch, you need to open the MT4 platform, select the “Tools” menu, and then select “MetaQuotes Language Editor.” This will open the MQL4 editor, where you can write the code for your forex MT4 EA.

If you choose to use a forex EA builder, you can use Investopedia’s EA builder, which allows you to build your forex MT4 EA without any programming knowledge. The EA builder uses a drag and drop interface, where you can select the indicators, rules, and other parameters to build your forex MT4 EA.

Step 5: Test and Optimize the Forex MT4 EA

Once you have built your forex MT4 EA, you need to test it using historical data. The MT4 platform has a built-in backtesting feature, which allows you to test your forex MT4 EA using historical data.

During the testing phase, you need to monitor the performance of your forex MT4 EA and make any necessary adjustments to optimize its performance.


Building a forex MT4 EA requires a basic understanding of programming and a clear trading strategy. By following the steps outlined in this article, you can build your forex MT4 EA using Investopedia’s EA builder or by writing the code from scratch. The key to success is to test and optimize your forex MT4 EA to ensure that it performs as expected.


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