Risk & Money Management · Intermediate · 5 min
Putting leverage in perspective
You can calculate effective leverage, explain why leverage changes how big a position can be, and why it does not change risk when size follows the stop.
A magnifier, used how?
Leverage is usually described as a magnifier: it makes gains bigger and losses bigger. That is true, and the lessons on margin and CFDs showed how fast it can go wrong.
But it is only half of the story. Leverage itself does not decide how much you lose. Your position size does. This lesson puts the two in the right order.
Same move, bigger swing
Leverage means holding a position larger than the money you put up, using borrowed money or margin. The useful number is effective leverage: the value of your positions divided by your account value. A 10,000 account holding a position worth 50,000 has an effective leverage of 5 : 1.
Effective leverage tells you how a price move translates into your account:
- A move of −2% costs 2% of the account without leverage.
- At 5 : 1, the same move costs 10%.
- At 30 : 1, the maximum ESMA allows retail clients on major currency pairs, it costs 60%.
That is the magnifier. Now add position sizing. If the size comes from your stop and your risk rule, as in the last lesson, the loss at the stop is fixed, for example 1% of the account. With a tight stop, the formula may call for a position larger than your cash. Leverage makes that position possible, but it does not raise the planned loss.
So the danger lies elsewhere:
- Sizing by leverage instead of by risk. Using the maximum leverage available, without a stop-based size, turns ordinary moves into large losses.
- Gaps and fast markets. A stop limits the loss only if it fills near its price. The SEC notes that a triggered stop becomes a market order, and the fill can be far away. With a large position, a gap past the stop costs much more.
- Costs. Leveraged products often charge financing for positions held overnight.
A gap turns 100 into 700
A fictional trader has 10,000 and risks 1% per trade. A setup has a stop 0.33% below the entry, so the formula calls for a position of about 30,000. Effective leverage: 3 : 1.
- If the stop fills as planned, the loss is about 100, or 1%.
- Overnight, news hits. The market opens 2% below the stop. The position loses about 0.33% + 2% = 2.33% of 30,000, which is about 700.
The plan was sound, and the loss was still seven times larger than planned. Without leverage, a position limited to the 10,000 account would have lost about 233 in the same gap. Tight stops with large positions are most exposed to gaps, especially when held over a weekend or news.
Common mistakes
- Treating maximum leverage as a target. It is a limit set by rules or the provider, not a recommendation.
- Looking only at margin used. Effective leverage, not margin, tells you how moves hit your account.
- Holding large leveraged positions through news or weekends. Gaps can skip your stop.
- Ignoring financing costs. Overnight charges add up on large positions.
The takeaway
Leverage lets you open larger positions than your cash. With proper sizing, risk stays fixed. Without it, small moves become large losses.
Check yourself
Quick quiz
4 questions. Instant feedback, nothing is saved.
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1Tap the leverage at which a 2% move costs 60% of the account.
Tap the chart.
A move of −2% on a position 30 times the account size costs 30 × 2% = 60% of the account.
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2An account of 5,000 holds a position worth 25,000. What is the effective leverage?
Effective leverage = position value ÷ account value = 25,000 ÷ 5,000 = 5.
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3Two traders risk 1% with a stop at the same price. One uses leverage, the other does not. If both stops are hit as planned, what do they lose?
With size based on the stop, the loss at the stop is fixed. Leverage only allows the larger position the formula might call for.
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4Why is leverage still dangerous with a stop in place?
A stop limits the loss only if it fills near its price. After a gap, a large leveraged position can lose much more than planned.
of 4 correct.