Trading & Investing Strategies
Position Sizing
Risk management and simple, durable strategies that keep you in the game.
In this lesson
- What position sizing is
- How it keeps you in the game
Key takeaways
- 1Position sizing decides how much you risk per trade
- 2Risking a small % survives losing streaks
- 3Sizing matters more than being right every time
Lesson summary
Position sizing decides how much account risk a trade carries.
Mental model
What position sizing really means
Position sizing decides how much account risk a trade carries. It is the control that keeps one wrong idea from damaging the whole account.
- What position sizing is
- How it keeps you in the game
Mechanics
How to reason about position sizing
Risk per trade is usually defined as account size times a chosen percentage.
Position size depends on entry, stop distance, and the amount you are willing to lose.
A wider stop usually means a smaller position if risk stays constant.
- Position sizing decides how much you risk per trade
- Risking a small % survives losing streaks
- Sizing matters more than being right every time
Example
Seeing position sizing in action
With a 10,000 USDC account and 1% risk, the maximum planned loss is 100 USDC. If the stop is 5% away, the position cannot be 10,000 USDC without exceeding the risk limit.
Common mistakes
Where people slip up with position sizing
Many traders size from how confident they feel instead of from where the trade is invalidated.
Risk notes
Reading the risk in position sizing
Oversizing creates forced exits, emotional decisions, liquidation risk, and a low chance of surviving normal losing streaks.
- Choose account risk percentage.
- Define stop distance.
- Calculate position size before entry.
Practice
A short drill for position sizing
- Choose account risk percentage.
- Define stop distance.
- Calculate position size before entry.
Review
Key terms
- Liquidation
- Forced closure of a leveraged position when margin can no longer cover its losses.
- Technical Analysis
- Studying price and volume history to estimate probable future moves.
- Support / Resistance
- Price levels where buying (support) or selling (resistance) pressure historically clusters.
- Slippage
- The difference between expected and executed price, common in low-liquidity or fast markets.
Source notes
Editorial references
These references are starting points for verifying the mechanisms, risk checks, and product context behind this lesson.
Before you continue
Can you do these?
- Choose account risk percentage.
- Define stop distance.
- Calculate position size before entry.
Related learning
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Checkpoint
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Answer every question correctly to complete the lesson.
Position sizing is about…