Leverage, margin and exposure
Leverage is sold as the thing that makes small accounts powerful. Mechanically it does something much narrower: it changes how much cash your broker sets aside to let you hold a position. It does not change your risk. Your position size does that — and confusing the two is why accounts vanish in a single session.
Three numbers that get mixed up
- Exposure — the full market value of what you control. Two units of an instrument priced at $2,000 is $4,000 of exposure.
- Margin — the deposit locked to hold that exposure. At 1:100 leverage, $4,000 of exposure locks $40.
- Risk — what you actually lose if the stop is hit. With a 25-point stop at $1 per point per unit and two units, that is $50.
Raising leverage from 1:30 to 1:500 changes only the middle number. It frees up cash on the platform. It does not make the trade safer, and it does not make it more profitable — the profit and loss come entirely from exposure and price movement.
So why does high leverage destroy accounts?
Because of what it permits, not what it does. When margin stops being a constraint, nothing on the screen objects to a position ten times larger than sensible. The platform shows plenty of “free margin”, the trade is allowed, and the risk per trade quietly moves from 1% to 30%. Leverage does not pull the trigger; it removes the safety catch.
The number worth watching
Instead of leverage, track exposure relative to your account. Divide total exposure by account equity. If a $5,000 account holds $50,000 of exposure, that is 10× — and a 1% adverse move against the position takes 10% off the account. Doing that division before entering is more useful than any margin figure the platform displays.
Then add up correlated positions. Gold, silver and a gold-mining index are, for this purpose, mostly the same trade. Their exposures stack.
Margin calls and stop-outs
Brokers monitor the ratio between your equity and the margin you are using. Once it falls under a threshold, positions are closed automatically — starting, typically, with the largest loser, at whatever price is available. It happens without warning and at the worst possible moment, because the moment is defined by the market moving against you.
The practical consequence: a stop-out is not a risk-management tool that saves you. It is the outcome of having none. If your sizing is sane, your own stop is always reached long before the broker's.
The costs leverage magnifies
- Spread and commission scale with exposure, not with margin. A larger position pays more to enter and exit, whatever your leverage setting.
- Overnight swap is charged on the full exposure. Held for weeks, this can quietly exceed the move you were trading for.
- Gap risk is the one that ends accounts. If the market opens far past your stop, the loss is proportional to exposure — and can exceed the equity in the account. Negative-balance protection is not universal; check whether your account has it.
A sane default
Pick the position size from your risk budget and stop distance first, then check whether your leverage even allows it. For most retail accounts the answer is yes with room to spare — which tells you the leverage number was never the binding constraint. If a trade only becomes possible at very high leverage, the position is too large for the account, not the leverage too low.
Putting the three lessons together
Risk budget decides what you can lose. The stop level decides where the idea dies. Together they produce the position size. Leverage merely says whether the platform will let you hold it. Get the first two right and the third stops mattering — which is exactly the state you want to be in.