The Most Important Concept For Successful Trading.


What is R?

Any sound trading methodology has to incorporate risk management, and one of the easiest ways to do that, is to use the “R” method.

“R” is a fixed dollar amount that stands for both risk and reward, and is best arrived at by using a percentage of your total trading capital.  It allows you to size your position in relation to your risk level instead of in an arbitrary way. For example, if you have $50,000 available in trading capital (cash not including margin), you might use one quarter of one percent (.0025), or $125.00, as your “R” factor.  This is the total amount you are willing to risk per trade and is expressed as 1R.

In the example below, A is a former support level that was broken, and now is a potential resistance level.  Price has been trapped between B and C level, and you are looking to go long if it breaks back above B.  You know that a reasonable stop loss would be just below level C, so you determine the price distance between you entry just above B and your stop just below C.  Let’s say that this distance is 50 cents.  You now take that distance and divide it by your “R” factor, which gives you a position size of 250 shares ($125.00 / .50 = 250).

You now know that if your trade fails and hits your stop-loss order, the most you can lose is $125.00 or 1R.  The goal then becomes to only take trades where you have the best potential reward for your 1R risk, ideally 1:3.  In this same example, the resistance level of A is a reasonable target for a successful trade, so you determine the distance between your entry just above B, to the target of A.  You then divide this number by your “R” factor to see if the trade is worth taking.  If the distance between A and B is $1.50 then you have a 1:3 risk/reward ratio and the trade is a good bet ($1.50 / .50 = 3).

The higher the risk/reward ratio you have on your trades, the fewer times you have to be right, and still make money, as this chart below illustrates.

Risk Reward # of Trades 50% WT 40% WT 30% WT 20% WT
1 1 10 0R (-2R) (-4R) (-6R)
1 2 10 5R 2R (-1R) (-4R)
1 3 10 10R 6R 2R (-2R)
1 4 10 15R 10R 5R 0R
1 5 10 20R 14R 8R 2R
WT =Winning Trades

You can see that if you only take trades that have a 1:3 risk/reward ratio, and you are correct just 50% of the time, you will have a 10R profit on ten trades.

Understanding how to use risk/return and position sizing allows you to make sure you are never over extended on a trade and allows you to always return to fight another day.

Brilliant stuff like this rains down like..well, rain, on my stream during the week. If you want to get wet, follow me on Twitter and StockTwits. You can also pick up my book Trading – The Best of the Best: Top Trading Tips For Our Times by clicking here.

24 Responses

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  8. My apologies – I am new here. It would be a great help if you could answer these.
    Would you be able to explain two items please.
    1. How do the A, B and C levels work in a bullish/increasing stock scenario?
    2. I am aware there are multiple strategies to pick a buy and sell point for stocks (tech analysis, etc etc). With that disclaimer in view, do you have any method in view for identifying these points?

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  12. I do my homework. I read. I watch the people who seem to lead on the Twits board. I really appreciate people like you who reach out to others. I’ve been teaching for 25 years and believe I’ve contributed something. Just as you used to run your business, I’m through doing what I’m doing. Can I be a trader? Not sure, but I’m going to try. Again, thank you for your comments today and comments in the past. I think you are the first person I read when I joined this group.

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