Risk management · Lesson 1 of 4
Why risk management comes first
4 min read
Draft lesson — under editorial review
Most new traders spend their time looking for better entries. Experienced traders tend to spend more time on a less exciting question: how much could this trade cost me if I am wrong? This lesson explains why that question comes first.
No strategy wins every trade
Every trading approach has losing trades, and losses often arrive in clusters. A method that wins half its trades will still produce runs of five, six or more losses in a row from time to time. That is not a sign the method is broken; it is simply how probability behaves.
If you cannot survive those runs, the quality of your strategy never gets a chance to matter. Risk management is the set of rules that keeps a normal losing streak from becoming the end of your account.
Risk of ruin, in plain terms
Risk of ruin is the chance that your account falls so far that you can no longer trade it in a meaningful way. You do not need a formula to grasp the idea. The bigger the share of your account you put at risk on each trade, the fewer losses it takes to do serious damage.
Worked example: ten losses in a row
Suppose you lose ten trades in a row and you risk a fixed percentage of your current balance each time. Each loss shrinks the balance by that percentage, so the effect compounds.
| Risk per trade | Balance left after 10 losses | Total drawdown |
|---|---|---|
| 1% | 0.99 to the power of 10 = 90.4% | about 9.6% |
| 2% | 0.98 to the power of 10 = 81.7% | about 18.3% |
| 5% | 0.95 to the power of 10 = 59.9% | about 40.1% |
| 10% | 0.90 to the power of 10 = 34.9% | about 65.1% |
Ten straight losses is unusual, but it is far from impossible over a few hundred trades. At 1% risk you would be bruised but still trading. At 10% risk you would have lost nearly two-thirds of your account, and, as a later lesson shows, you would then need to almost triple what was left just to get back to where you started.
Percent risk per trade
The most widely used way to control this is to risk a fixed percentage of your account on each trade. "Risk" here means the amount you would lose if your stop-loss is hit, not the size of the position.
Many educators suggest keeping this between 0.5% and 2% per trade, with 1% a common starting point. There is nothing magic about these numbers, but they share one useful property: a long losing streak hurts without being fatal.
Why a percentage rather than a fixed amount?
A percentage adjusts automatically:
- After losses, the same percentage is a smaller amount in your account currency, so you naturally trade smaller while things are going badly.
- After gains, the amount grows slowly with your account, rather than jumping because you feel confident.
For example, with a 10,000 USD account and 1% risk, your first trade risks 100 USD. If the account falls to 9,000 USD, 1% is now 90 USD. If it rises to 11,000 USD, 1% is 110 USD.
Risk is decided before you enter
The order of decisions matters. A disciplined process looks like this:
- Decide where the trade idea is clearly wrong. That is where your stop-loss goes.
- Decide how much of your account you are willing to lose if that happens, for example 1%.
- Work out the position size that makes those two numbers match.
Many beginners do it the other way round. They pick a position size that feels exciting, then place the stop wherever the loss "feels acceptable". That usually produces stops that are too tight to make sense, or losses that are far too large.
Leverage changes the speed, not the rules
Forex and CFD accounts usually offer leverage, which lets you control a position much larger than your deposit. Leverage does not change how much you should risk, but it does make it very easy to risk far more than you intended. High leverage combined with no fixed risk rule is one of the main reasons most retail CFD accounts lose money. Prices can also gap past your stop, especially over weekends or around major news, so your actual loss can sometimes exceed the amount you planned.
Key takeaways
- Losing streaks are a normal part of any strategy; your risk rules decide whether you survive them.
- Losses compound: ten losses at 10% risk cost about 65% of the account, against about 9.6% at 1% risk.
- Risk a fixed, small percentage of your account per trade, measured as the loss if your stop is hit.
- Choose your stop first, then your risk amount, and only then your position size.
- Leverage makes over-risking easy, and gaps can push losses beyond the planned amount.
Educational content only — not financial advice. Trading leveraged products such as forex and CFDs carries a high risk of losing money.