5 Questions You Need To Have Answered Before You Back-Test Your Forex System

As 90-95% of new forex traders lose money within the first 3-6 months this article helps to guide new forex traders by asking 5 questions that the forex trader needs to know prior to back-testing their forex system.

Let us jump right in...

1. What data type are you using (or going to use)?

I know this sounds strange, especially if you have experience from another market such as stocks as their generally is only one type of data source available. However, in the forex market you can have up to 4 different data types: bid, ask, mid and indicative. Each have their own little nuances.

If you would like to know more about the data types then visit the article written about the perils of indicative prices. As this will save me from having to repeat the information again and boring those who've already read it.

So, if you know you have indicative prices then you know you're in for some good results! However, if you have any of the other three you need to be careful on how stop and limit orders are placed.

As an example: If we had bid price history and we were looking to place a buy entry stop at 0830 EST according to the day's high, then we know that the bid price will not accurately reflect what the actual price of our order should be. You would have noticed that if you placed a buy entry stop at the exact same price as that of the day's high you would have entered prematurely - you would have entered 4 or 5 pips before the high or the low of the day was touched (the exact same amount as the spread your broker offers!).

This leads me into the next most important question...

2. What spread is your broker offering on the currencies you are bask-testing?

You need to know this as this can help you set your slippage settings on each currency.

As our example in question 1 pointed out. We found that our buy at the day's high method did not exactly work because we bought at the BID PRICE high, not the ASK PRICE high - the price that we need when we place our order TO BUY.

Therefore, we enter in a slippage setting representing the spread that would be exhibited by this trade on this currency.

But knowing at what price to buy is only half the problem... how do we know what quantity to buy?

3. What margin does your broker offer?

If we know at what price to buy our currency at we need to inform our broker on what quantity to buy to fulfill the order. We only know what quantity to buy by the margin that the brokerage firm offers.

Most brokerage firms offer 100:1 leverage, however, some firms offer mini accounts with 200:1 leverage, others only 50:1 leverage.

Find out the margin required.

4. What restrictions does your broker impose?

Now, I don't just mean margin and spread restrictions as I have mentioned above. These are important in their own right, what you need to find out are the details.

This is probably the most important question of all as the fine line between success and failure can be found in the details. Now you can have this questioned by one of two ways:1. You can find out through experience (generally the most expensive way unless done through the demo account!); or2. You ask your broker (the cheapest and best way).

Why is this so important? I hear you ask. Well let's say you have a system that trades any gaps that might form on Sunday at 1700 EST, but your broker does not open until 1730 EST. You either need to factor this restriction in to your system, or move onto another system completely. Or, you may have a system that has 10 pip stops, but you find out that your broker will only let you place 15 pip stops from your initial entry price. Once again you will need to change your system to see whether it still performs well, or throw out your system (or change your broker)!

In fact one of the most devastating restrictions imposed by FXCM is that they do not accept stop entry orders if price never happens to trade at your entry stop price! FXCM will honor and "take the loss" of your OPEN stop positions, but if the liquidity is not there and price has shot straight through your stop price then you will miss out. This can have disastrous effects on your system results as you are left wondering on trades where you made good returns - "Would FXCM have got me in?". You may want to read of some of the quirks I use when placing entry stop orders on FXCM that could be of huge benefit to you to help you possibly get around this problem.

The restrictions by your broker are only half your systems' success, you also need to find out about another more important restriction... yourself. This leads me to the final point...

5. What restrictions do you have?

This is a vitally important question. Most people test their systems and fall in love with the results but find when they trade their system they have lost their account and that most of the best signals occurred while they were sound asleep!

As the forex market is a 24 hour market, you need to put into place restrictions in your system that will be realisticly conducted by you during the course of a normal trading day. There is no use operating a trailing stop method that changes your stop points during times when you are asleep and cannot possibly do so.

I hope this article has made you aware of some of the important things that need to be known prior to testing your system.

Article written by Ryan Sheehy from Currency Secrets.com. Where you will find reviews on forex data vendors, signal providers, brokers, and popular forex resources, along with more quality articles... all for f*ree!

More Resources

Unable to open RSS Feed $XMLfilename with error HTTP ERROR: 404, exiting

More Currency Trading Information:

Related Articles


Stock Market Report: Day Trading or Swing Trading Online? Stock Investing Information
Profitable day traders recognize that momentum trading is among the fastest & most effective ways to harvest BIG piles of cash in the stock market.The problem is that if you don't know what stocks to look for and how to approach them while limiting your risk, you won't even get close to making some profits.
Reality of Online Forex Trading
Foreign exchange trading is the trading of currencies. Most currencies can be traded.
The Meaning of FOREX Price Charts and How to Use Them
There is one very important factor that you should consider with great care if you are willing to become a successful, profitable Forex trader. This ever important factor that must be always present in the trader's portfolio, is the ability to read the charts.
Two Timeless Rules in FOREX Investing
RULE #1) ~ Cut your losers; let your winners ride.One important thing that every new trader must know before entering this highly profitable business is that life is not perfect, even in FOREX land, and you should always know one fact: YOU WILL HAVE LOSING TRADES.
Day Trading Training ... You need more than just going to a free stock market workshop to learn
Day trading is all about making buy and sell decisions. When you make a trade either your going to lose money or your going to make money, and some other times you will break even.
Forex Made Easy for Everyone
Forex made easy is as simple as you would want it to be. The foreign exchange market is a worldwide market and according to some estimates is almost as big as thirty times the turnover of the US Equity markets.
Options Trading - Advantages and Disadvantages
What is Options Trading?An option is simply granting someone the right to buy or sell something in the future. In the case of Dow index futures options, when someone buys a Dow call option they are buying the right to purchase that underlying Dow future at a specific price, known as the "strike price," at a future point in time, known as the "expiration date.
Money Management, Part 1
There are some common mistakes I've seen traders make in the area of money management. First, let's understand what money management is all about.
Welcome to the World of Currency Trading
Indeed large multinational and individual banks and other major financial institutions have dominated FX trading (also known as Forex trading), but there is a paradigm change in the nature and type of investing. According to one estimate, in the new millennium, there are over 6 million online investment accounts, up from 1.
How Currencies are Traded in the FOREX Market
Currencies are traded in dollar amounts called "lots". At 100:1 leverage, one lot is equal to $1000 which controls $100,000 of a given currency.
Forex Signal, Forex Signals Advice
There are lot's of Forex signals providers out there. New Forex traders might be thinking of looking for a reliable Forex signals provider.
Factors Influencing a Currency Pair Exchange Rate
IntroductionThe exchange rate refers to the value of the US dollar against the values of currencies of other countries. Such a rate helps determine how much we pay for imported goods and services and how much we receive for what we export, among other things.
Creativity in Trading
"Is it important to be creative in your trading?"I'm not sure I can describe it in terms of importance. The creative process is somewhat of a mystery, even to scientists who study it.
Day Trading Course or Day Trading Technique Seminar: Learn Day Trading Education
Profitable day traders recognize that momentum trading is among the fastest & most effective ways to harvest BIG piles of cash in the stock market.The problem is that if you don't know what stocks to look for and how to approach them while limiting your risk, you won't even get close to making some profits.
Why Demo Account Performance Is Often Better Than Real Account Performance
Over the past several years, the popularity of online currency trading has grown substantially. Each day, online FX brokerage firms attract new investors - each of them lining up with a glint in their eye, lured in by promises of easy money.
Assessing the Opportunities Presented by the New Iraqi Currency
Could it be possible that you are staring right into the most spectacular financial opportunity of the century? Operation: Iraqi Freedom will undoubtedly be a war marked in history for loss and tragedy, American victory, and the rise of a nation with a new democratic government. But could it also be a war historically remembered for the financial opportunity it created for the sharp investors who keenly recognized an ephemeral chance at the right time?The War on Iraq ended with a nation placed on the footstool of many new operations.
Online Stock Trading: Freedom of Trade
I remember the first time I started to trade online. It was just before the tech bubble of the late 1990's and the internet was still something new for most people.
A Look at Online Forex Brokers
An online forex broker is a firm that facilitates retail trading using Internet technologies. Global Forex Trading (GFT), one of the popular online forex brokers.
Forex Signal Services
What are Forex signals? Forex signals are paid services offered by some brokers and independent Forex annalists. Companies that offer forex signals monitor and analyze the market for you, providing you with their data via desktop alerts, email or even SMS and pager alerts.
Facts of Day Trading
Are you thinking of entering the fast-paced world of day trading? Arm yourselves with the information from this fact sheet on day trading.What is day trading?Day trading is an investment tactic that does online daily stock trading with a relatively short investment.