Risk Management in Trading: Position Sizing, Stop Losses and Drawdown
How much should you risk per trade? Position sizing, stop losses, risk to reward and drawdown, with worked examples for gold and forex.
Nex Wealth Management8 min read
Risk management in trading means deciding, before every trade, how much of your account you can afford to lose, the price at which the trade is proven wrong, and the position size that makes a stop at that price cost exactly that amount. A common rule is to risk no more than 1% of the account on any single trade.
Most new traders spend their time looking for better entries. Most experienced traders will tell you that entries matter far less than what happens around them: how much is risked, where the trade is wrong, and how the account survives a run of losses.
Risk management is the part of trading that decides whether you are still trading in a year. This guide covers the core of it, with the numbers worked through so you can apply them to your own account.
Why Risk Management Matters More Than Entries
Every strategy loses. Even a strategy that wins 60% of the time is likely to produce five or more losing trades in a row over a few hundred trades, simply through chance. The question is not whether that streak arrives, but whether your account can absorb it without damage you cannot recover from.
Risk management answers three questions before every trade:
- How much can I lose on this trade? The amount of the account at risk.
- Where am I wrong? The price at which the trade idea is invalid, which becomes the stop loss.
- How large should the position be? The size that makes a stop at that price cost exactly the amount you decided to risk.
Get these three right and a bad trade is simply a cost of doing business. Get them wrong and a single bad trade can undo months of work.
How Much Should You Risk Per Trade?
A widely used guideline is to risk between 0.5% and 2% of the account on any single trade, with 1% as a common starting point. On a $10,000 account, 1% is $100.
That can feel small. The reason for it becomes obvious when you look at what a losing streak does at different risk levels:
| Risk per trade | Account after 10 losses in a row | Drawdown |
|---|---|---|
| 1% | $9,044 | 9.6% |
| 2% | $8,171 | 18.3% |
| 5% | $5,987 | 40.1% |
| 10% | $3,487 | 65.1% |
At 1%, ten straight losses is an uncomfortable week. At 10%, it is the end of the account in all but name. Since nobody can predict when a streak will come, the risk per trade has to be set for the streak you have not seen yet.
How to Calculate Position Size
Position size is not a feeling. It follows from two numbers you have already decided: the amount you are willing to lose, and the distance to your stop loss.
Position size = amount at risk ÷ (stop distance × value of one unit of movement)
Example: gold (XAUUSD)
- Account: $10,000, risking 1%, so $100
- Entry at a level you have chosen, with the stop $5 below it
- A standard gold lot is commonly 100 ounces, so a $1 move is worth $100 per lot, and a $5 move is worth $500 per lot
$100 ÷ $500 = 0.2 lots. If the stop is hit, the loss is $100, exactly as planned.
Example: forex (EURUSD)
- Account: $10,000, risking 1%, so $100
- Stop loss 25 pips from entry
- On a standard lot of 100,000 units, one pip is worth about $10
$100 ÷ (25 × $10) = 0.4 lots.
Notice what changes between trades: when the stop needs to be wider, the position gets smaller, so the money at risk stays the same. Contract sizes vary between brokers, so always confirm the value of one lot on your own platform.
Where to Place a Stop Loss
A stop loss should sit where the trade idea is proven wrong, not at a round number of dollars or pips that happens to feel comfortable.
In practice, that usually means:
- Beyond market structure. Below the swing low that a long trade depends on, or above the swing high for a short.
- Outside normal noise. If an instrument regularly moves $8 against you within a healthy trend, a $3 stop will be hit by noise rather than by being wrong. Measures such as the Average True Range help judge this.
- Never widened once the trade is open. Moving a stop further away to avoid a loss turns a planned, small loss into an unplanned, larger one.
If the correct stop is so far away that even a small position risks too much, the answer is to skip the trade, not to tighten the stop.
Risk to Reward and Win Rate
The risk to reward ratio compares what a trade risks with what it targets. Risking $100 to make $200 is a 1:2 trade.
Risk to reward and win rate work together. The win rate you need just to break even falls as the reward grows:
| Risk to reward | Win rate needed to break even |
|---|---|
| 1:1 | 50% |
| 1:1.5 | 40% |
| 1:2 | 33.3% |
| 1:3 | 25% |
This is why a trader who wins fewer than half of their trades can still be profitable, and why a high win rate means little if the losses are much larger than the wins. A target is only meaningful if price can realistically reach it, though. A 1:5 target that is rarely hit is worse than a 1:2 target that often is.
The Maths of Drawdown
Losses and gains are not symmetrical. After a loss, the account is smaller, so it takes a larger percentage gain to get back to where it started:
| Drawdown | Gain needed to recover |
|---|---|
| 10% | 11.1% |
| 20% | 25% |
| 30% | 42.9% |
| 40% | 66.7% |
| 50% | 100% |
| 75% | 300% |
A 10% drawdown is routine. A 50% drawdown means doubling the account just to return to zero. Keeping drawdowns shallow is far easier than recovering from deep ones, which is why professional risk frameworks set maximum drawdown limits in advance.
Daily and Weekly Loss Limits
Per-trade risk protects you from any single trade. A loss limit protects you from yourself.
A common approach is to stop trading for the day after losing 2% to 3% of the account, and for the week after a larger figure such as 5% to 6%. The point is to step away before frustration starts making the decisions. Losses taken while trying to win back earlier losses are some of the most expensive a trader makes.
Correlation: The Hidden Risk
Two trades are not always two separate risks. Buying gold and buying EURUSD at the same time are both, in large part, bets against the US dollar. If the dollar strengthens sharply, both can lose together.
Before adding a position, ask whether it is genuinely a new idea or the same idea expressed twice. If it is the same idea, treat the combined position as one trade and size it accordingly.
Risk Management and Psychology
Rules only work if they are followed when it is hardest to follow them: after three losses in a row, or after a large win that makes the next trade feel easy.
Two habits make this far more reliable:
- Write the plan before the trade. Entry, stop, target and size, decided while calm.
- Keep a trading journal. Record every trade and whether the plan was followed. Over time, the journal shows exactly where discipline breaks down, which is usually more useful than any new indicator.
Frequently Asked Questions
What is the 1% rule in trading?
The 1% rule means risking no more than 1% of your trading account on a single trade. On a $10,000 account, the most you would lose if the stop loss is hit is $100. It keeps losing streaks survivable and gives a strategy time to work.
What is a good risk to reward ratio?
Many traders look for at least 1:1.5 or 1:2, but the right ratio depends on your strategy's win rate. A ratio is only useful if the target is realistic. The aim is a positive combination of win rate and reward, not the largest possible ratio.
Should I always use a stop loss?
For most traders, yes. A stop loss defines the maximum loss before the trade is placed and removes the need to make that decision under pressure. Trading without one exposes the account to sudden moves, such as those around major news releases.
How do I calculate my position size?
Divide the amount you are willing to risk by the distance to your stop loss multiplied by the value of one unit of price movement. For example, risking $100 with a $5 stop on gold, where $1 is worth $100 per lot, gives a position of 0.2 lots.
How do I recover from a large drawdown?
Reduce your risk per trade rather than increase it, return to the setups you trade best, and review your journal to find what caused the drawdown. Trying to recover quickly with larger positions is the most common way a drawdown becomes deeper.
Learning Risk Management With Structure
Reading about risk management is the easy part. Applying it consistently, trade after trade, is where most traders struggle, and where feedback from an experienced trader makes the biggest difference.
Risk management is a dedicated module in the Nex Wealth mentorship program, covering position sizing from account risk, stop placement and drawdown limits, followed by live sessions where every trade is reviewed with a mentor.
Risk Disclaimer: Trading and investing involve substantial risk, and capital can be lost. Past performance is not a guarantee of future results. This article is for educational and informational purposes only and should not be considered financial advice. Read our full risk disclaimer.
