to use big leg sizes between 150 and 300 pips. What this does is that it sometimes turns a trending phase into movement in a sideways market. I would use 300 pips for the GBPJPY and 150 pips for the EURUSD for instance.
Secondly there is no rule that says that the legs have to be the same size. So I change my leg sizes in trending markets to be even bigger. If I started with 150 for the 1st leg I would go to 200 for the 2nd leg and 250 for the 3rd leg etc. This makes sure that I am carrying less loss making transactions in a trend.
Thirdly sometimes it is wise to increase the number of lots with the trend compared to the numbers against the trend in a good trend. However be aware of having the same number of sell and buy transaction too soon because all you will have done was lock in your current status in a 100% hedge.
Forthly This is the biggest change and most important one that I personally have made in my grid trading strategy. Always cash in all your transactions when your system is positive and when the price reaches the end of one of your grid legs. By cashing in you are reducing the risk of carrying negative lots in a trending market. This also gives you an opportunity to re-assess the market conditions.
People that have traded the grid system will immediately see how the above approaches will reduce the risks of exponential losses building up in a strongly trending market. Please feel free to contact Mary McArthur at firstname.lastname@example.org for clarification on any items discussed above. She has numerous examples of successful applications of grid trading
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