This is the most important lesson in this entire course. You can have the best analysis in the world and still blow your account if you do not manage risk. The traders who survive long-term are not the ones with the best entries — they are the ones who protect their capital.
Why Most Traders Fail
It is rarely because their analysis is wrong. It is because they risk too much on a single trade, do not use stop losses, or let emotions override their rules. A single oversized loss can wipe out weeks of careful gains. Risk management is the antidote.
The 1-2% Rule
Key Concept
Never risk more than 1-2% of your total account on a single trade.If you have a £10,000 account and risk 1% per trade, your maximum loss per trade is £100. Even a devastating losing streak of 10 trades in a row only costs you 10% — painful, but recoverable. Risk 10% per trade and five losses puts you down 50% — you now need a 100% return just to break even.
Position Sizing Formula
This formula tells you exactly how many shares, lots, or contracts to trade:
Position Size = (Account × Risk%) ÷ (Entry Price - Stop Loss Price)
Example
Account: £10,000. Risk per trade: 1% = £100. You want to buy a stock at £5.00 with a stop loss at £4.80. Risk per share: £0.20. Position size: £100 ÷ £0.20 = 500 shares(£2,500 position). If the stop is hit, you lose exactly £100 — your predetermined maximum risk.
Stop Loss Placement
A stop loss is an order that automatically closes your trade at a predetermined price to limit your loss. Place stop losses at levels where your trade idea is proven wrong:
- Below support (for long trades) or above resistance (for short trades)
- Below the most recent swing low (or above the most recent swing high)
- Using ATR (Average True Range) — typically 1.5-2x ATR below entry
Risk-Reward Ratio
For every trade, you should aim to make at least twice what you risk. This is a minimum 1:2 risk-reward ratio(R:R). Risk £1 to make £2.
| Win Rate | R:R 1:1 | R:R 1:2 | R:R 1:3 |
|---|---|---|---|
| 30% | Losing | Losing | Break-even |
| 40% | Losing | Break-even | Profitable |
| 50% | Break-even | Profitable | Very profitable |
| 60% | Profitable | Very profitable | Excellent |
Key Concept
You do not need to win most of your trades to be profitable. With a 1:3 risk-reward ratio, you can be wrong 60% of the time and still make money. This is why risk management is more important than being "right." Focus on the quality of your setups (high R:R) rather than trying to win every trade.
Warning
Trading without a stop loss is like driving without a seatbelt. You might be fine most of the time, but the one time something goes wrong, the damage is catastrophic. Always know your exit before you enter.
Risk Disclaimer: Trading financial markets involves significant risk of loss. The content on this page is for educational purposes only and does not constitute financial advice. Past performance is not indicative of future results. You should not trade with money you cannot afford to lose. 70-80% of retail investor accounts lose money when trading CFDs and spread bets. Consider whether you understand how these products work and whether you can afford the high risk of losing your money.