This is not investment advice. The information provided is for educational and informational purposes only and does not constitute a recommendation to buy or sell any financial product.
Leverage is one of the most discussed tools in stocks trading, and it is also one of the most misused. The reason is that leverage looks the same in both correct and incorrect use: a position larger than the unleveraged one. The difference is whether the position size is the result of a calculated input (the stop, the account, the strategy) or a default (the maximum the broker offers).
The trader who treats leverage as a tool has a useful instrument. The trader who treats leverage as a goal has a risk management problem, and the problem usually shows up in the account value.
What leverage actually is
Leverage is the use of borrowed capital to take a position larger than the trader's cash would otherwise allow. The borrowed capital is provided by the broker, the cost is the financing rate on the borrowed portion, and the trader's equity in the position is the difference between the position size and the loan. A 2× leveraged position is 50% the trader's cash and 50% borrowed.
The leverage multiplies both the return and the risk on the position. A 10% gain on a 2× leveraged position is a 20% gain on the trader's capital. A 10% loss is a 20% loss. The multiple applies in both directions, and the multiple is the source of both the upside and the downside.
The legitimate uses
There are three legitimate uses of leverage in stocks trading. The first is capital efficiency. A trader with a small account can take a meaningful position in a high-priced stock by using margin, and the freed cash is the actual economic benefit. The freed cash can be used for another trade, a hedge, or held as a buffer.
The second is short-term tactical positioning. A trader with a directional view on a stock for the next few days can size the position to the view without committing the full notional. The financing cost over a few days is small, and the position is closed before the cost compounds.
The third is hedging. A trader with a long portfolio can take a short position in a correlated instrument to hedge a specific risk window, and the cost of the hedge is the financing rate on the borrowed portion. The hedge is a clean way to manage the risk of a known event, and the cost is the price of the protection.
The illegitimate uses
The illegitimate uses of leverage are the ones that produce the catastrophic losses. The first is the bet amplifier. A trader who takes a position larger than the risk budget, justified by the leverage available, is using leverage as a bet amplifier. The bet amplifier is the source of the largest retail losses, and the bet amplifier is not a legitimate use of the tool.
The second is the long-term hold. A trader who uses leverage for a long-term investment is paying the financing cost for the entire holding period, and the cost is a real drag on the return. The drag is usually larger than the return advantage of the leverage, and the long-term investor is usually better off using no leverage or using a smaller amount.
The third is the default use. A trader who uses the maximum available leverage on every position is not making a strategy decision; the trader is making a default decision, and the default is rarely the right one. The right leverage for a position is calculated from the stop and the account, not picked from a menu.
How to use leverage as a tool
The honest answer is to calculate the position size from the risk budget and the stop, and to use whatever leverage the calculation produces. The calculation is mechanical. A trader with a €10,000 account and a 1% risk budget has €100 of risk on the trade. A 5%-wide stop implies a €2,000 position. The leverage is €2,000 / €10,000 = 0.2×, and the position is unleveraged.
The trader who wants a 2× leveraged position needs a €20,000 position on a €10,000 account. The position size requires the trader to either use margin or reduce the position size. The 2× position is appropriate for a strategy with a tight stop and a clear exit; it is not appropriate for a strategy with a wide stop and a long hold.
Common questions
Is 2× leverage risky? A 2× leveraged position is riskier than an unleveraged position, because the same percentage move produces twice the dollar move on capital. Whether the risk is acceptable depends on the position size relative to the account, the stop distance, and the holding period.
What leverage do professionals use? Most professional traders use little or no leverage for long-term positions, and moderate leverage (1-3×) for short-term tactical positions. The leverage is sized to the strategy, not to the maximum the broker offers.
Can leverage be used for income? Leverage can amplify the return on an income strategy (covered calls, dividend capture), but the leverage also amplifies the loss. The position must be sized to the risk budget, and the leverage must be calculated from the position size, not the other way around.
Does higher leverage always mean higher returns? No. Higher leverage produces higher returns when the trader is right, and higher losses when the trader is wrong. Over many trades, the return is determined by the strategy's win rate and risk-reward ratio, not by the leverage figure.
Related resources
Where to start
If you are working out whether leverage is the right tool for your strategy, the most useful first step is to calculate the position size your strategy requires at the risk budget, and to compare the implied leverage to what your broker offers. Our broker comparison lists the maximum leverage and the financing rate at each broker, which together tell you what the cost looks like before you take the position.