About Pipsychology

Pipsychology Author If you can't keep your emotions in check when trading, you will lose money. Lots of it. Pipsychology was created to help minimize this from happening to you. The most significant action that you can do to improve trading profits is to work on yourself. Really knowing yourself and how you think can give you an edge that others in the market don't have. My goal is to share practical advice to improve your forex psychology without boring you to death. Hopefully you can develop the mental edge you need to become the best trader you can be.

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December 2007

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Does Size Matter?

It's not what you've got, but what you do with it that counts, right?

Wrong.

If you've got $1,000 in your account, and you're trading ten mini lots at a time, you will quickly end up broke as a joke.

Size does matter...in trading. Get your mind out of the gutter.

One of the most common mistakes traders seem to make is entering a trade with the correct number of lots, otherwise known as "position size".

As a newbie, your risk should never be more than 1-2% of your total account. That means if you have $10,000 and you keep your position size to 1%, you should never risk more than $100 in a trade.

So for example, if you're trading a mini-account (10k lots) with 200:1 margin, you would be limited to 2 lots.

Most new traders think they can quickly start increasing their position size just because they get lucky on a couple trades that turned out to be profitable.

BIG mistake.

Size is a double-edged sword. Size can make you big profits, but it can make you big losses as well.

Another dumb move inexperienced traders make is increasing their position size on their next trade right after a losing trade so they can try and make up for the money lost.

This is an even bigger mistake because not only is the trader emotional because of the recent loss, but a larger position size can possibly blow his/her account.

You have to learn to decrease, not increase, your position size when trades aren't going your way.

Let me repeat that again just in case you were daydreaming.

You have to decrease, NOT increase, your position size when trades aren't going your way.

The more money you lose from your trading account, the harder it will be to recover those losses, and eventually you'll be "bankrupt".

When trading, size does matter.

Your position size should always be determined by the size of your account.
Most professional traders never open a position that risks more than 1% of their account. Some of them even believe that's still too much!

The bigger your account and the smaller your position size, the longer you'll last.

Comments (5)

Hi am new in forex, and i will like to learn more.
This whole thing about 1%/2% breeds confusion... I like to keep it as simple as possible so I trade 2x my total account size or less. ... so if you have 10k in your account you should only trade with (or less then) 2mini-lots since 1mini=10k. I personally believe margin is not important(to an extent)... if you think you are going to get a margin call because you have to use more of your cash then there is something wrong with your trading plan. its easier then doing the math (account-size X 1% X your-margin) there is a huge difference between 50:1 then 400:1.... if one is worried about putting in more cash in order to trade the same lot size then they are either using too much of their account or they are confused.
As a newbie, your position size should never be more than 1-2% of your total account. This statement is going to confuse people. You mean your position size your never risk more than a small percentage of your account. "So for example, if you're trading a mini-account (10k lots) with 200:1 margin, you would be limited to 2 lots." I have no idea where you're coming up with this two lot thing. In order to determine trade size you need to know first how large your account balance is, and second how large a risk you are taking per lot. You've included neither in your example. Position size is not, I repeat not, a function of leverage. Leverage merely allows you to take larger positions. It should not in any way dictate the size of the positions you take beyond whether or not you have sufficient leverage/margin available to put on the position size you desire.
I trade with 100:1 leverage on a mini account (base 10 i call it). My simple formulae is to trade 1 lot per $1000. So if you have an account with $10000 you could trade with 10 lots. It also comes down to your risk, how much do you effectively wish to risk per trade. I am quite conservative and dont generally risk outside of 20 to 25 pips and never above 30. That is part of my trading strategy
Awesome comments from everyone! Pipraider and rhodytrader make great points about the statement that "position sizes of 1-2% of your total account" can be confusing. Dr. Pipslow feels the same way, and has edited the article accordingly. Small amounts of risk are always the best practice, especially for beginners. Thanks for the wonderful feedback everyone.

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