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Risk Warning: Trading financial products on margin carries a high degree of risk and is not suitable for all investors. Losses can include all your initial investment. Please ensure you fully understand the risks and take appropriate care to manage your risk.

Education Path 2 · Strategy Lesson 04 · Final
Lesson 04 · ~7 min read

Controlling risk

The single most important ingredient of successful trading isn't picking winners — it's surviving losers. This lesson covers how to size positions and cap losses so a bad streak doesn't end your trading career.

Cutting losses early
Position sizing math
Drawdown tolerance
The rule that matters most

Know exactly how much you'll lose on each trade before you place it. And how much your account can lose before you stop and re-evaluate.

Both questions answered, in writing, before opening a position.

It's emotionally more appealing to focus on the upside of trading — the wins, the profits, the gains. But every trader should know precisely how much they're willing to lose on each trade before cutting losses, and how much they're willing to lose in their account before stopping to re-evaluate.

Risk is controlled in two ways. Both are mechanical, both are decided before any trade is placed, and both are non-negotiable once set:

Pillar 1

Cutting losses

Too often, the beginning trader is overly concerned about incurring losing trades. They let losses mount, hoping the market will turn around so the loss becomes a gain. This is the single most common way new traders blow up their accounts.

Almost all successful trading strategies include a disciplined procedure for cutting losses. When a trader is down on a position, emotions take over — fear of realizing the loss, hope that things will reverse, anger at the market. These emotions make it nearly impossible to cut losses at the right level after a trade is open.

The fix

Decide where losses will be cut before the trade is initiated. Set the stop, write down the number, and place the stop order with the entry. The decision is made when you're rational — not after the position is moving against you.

Account-level stop, not just trade-level stop

The other side of risk control is overall account risk. Before you begin trading, you should know:

Per trade
What's my maximum loss on this position?

Set a stop-loss order. Cap the damage.

Per account
How much can the account lose before I stop trading?

If you open with $2,000 — would you walk away at $1,500? $1,000? Decide now.

As with risk control on individual trades, the most important discipline is to decide on a level and stick with it. The number itself matters less than your commitment to it.

Pillar 2

Determining position size

Before beginning any trading program, an assessment should be made of the maximum likely loss per lot. Then the question becomes: how many lots can my account survive over a string of losing trades?

Let's walk through the math step by step.

Worked example · $10,000 account
Account size
$10,000
Position size
1 lot ($100K)
Worst-case stop
30 pips
1
Risk per trade in dollars
30 pips × $10/pip = $300 per trade
2
5 consecutive losses (an entirely normal streak)
5 × $300 = $1,500 drawdown
3
Drawdown as % of account
$1,500 ÷ $10,000 = 15%
×5
Now imagine you'd traded 5 lots instead
5 lots × $1,500 = $7,500 drawdown = 75% of account wiped out

The conclusion: Even though it's possible to trade 5 lots on a $10,000 account, this analysis shows the resulting drawdown would be catastrophic. Surviving a normal losing streak means trading far smaller positions than your margin allows.

The 1-2% rule
Never risk more than 1-2% of your account on a single trade.

Most professional traders follow this rule. On a $10,000 account, that means risking $100 to $200 per trade — well below the $300 figure above. The math: even 10 consecutive losses at 2% is only a 20% drawdown, which is recoverable. At 5% per trade, 10 losses puts you at 50% — at which point you need to double the remaining account just to break even.

The drawdown trap

Here's the math that makes risk control non-optional. The deeper your drawdown, the harder it is to recover:

Account drawdown Gain required to recover Difficulty
10% loss +11.1% gain Manageable
20% loss +25% gain Manageable
30% loss +42.9% gain Hard
50% loss +100% gain Very hard
75% loss +300% gain Nearly impossible
90% loss +900% gain Practically impossible

This is why every trader should size positions so they can tolerate a string of losses without dropping below ~20% drawdown. From 20% down, recovery is mathematically realistic. From 75% down, it isn't.

Lesson recap
  • Risk is controlled in two ways: cutting losses on each trade, and limiting position size for the account.
  • Decide your stop-loss before opening the trade. Emotions make rational decisions impossible after the position is moving against you.
  • Also decide an account-level stop — the amount you'll lose before stopping to re-evaluate. Stick to it.
  • The 1-2% rule: never risk more than 1-2% of account equity on a single trade.
  • Drawdowns are non-linear. A 20% loss needs a 25% gain to recover; a 75% loss needs a 300% gain. Stay shallow.

You've finished Path 1: Foundations

You now understand the forex market, the vocabulary, two trading strategies, and how to control risk. That's the complete foundation.

Lesson progress
4
Controlling Risk You are here
Path 1 complete
Practice risk management risk-free

A demo account is the safest place to develop discipline before any real money is at stake.

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Look up terms

Drawdown, margin, leverage, stop — all covered in the Glossary if you need a refresher.

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Questions about risk?

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Path 1 complete

Foundations done. What's next?

You have the knowledge. The next step is putting it to work on a demo account before risking real capital.