Module 1 · Lesson 7 of 9 · Foundations · About 5 minutes
Leverage and Margin Across Stocks, Futures and Options
On this page
Before you read: Futures Margin and Daily Mark-to-Market Explained
What you will learn
- Why “margin” means different things for stocks, futures and options.
- How leverage is measured as notional value against account equity.
- Why the same percentage move can mean very different account changes across products.
What does margin mean for stocks?
If you borrow to buy shares, what is the loan and what is the deposit?
In a US stock margin account, margin is a loan from the broker against securities. Federal rules set an initial limit, commonly allowing a borrow of up to half the purchase price for many stocks, and FINRA and brokers set maintenance levels. Interest is charged on the loan. Brokers can set stricter limits. Since FINRA’s 2026 intraday-margin changes, firms that have transitioned apply margin requirements during the trading day, not only at the close; see Account Types and the Pattern Day Trader Rule.
What does margin mean for futures?
Why is there no loan when you buy a futures contract?
Futures margin is a performance bond: a good-faith deposit set by the exchange and broker, often a small share of the contract’s notional value. Nothing is borrowed. Gains and losses move between accounts every day through mark-to-market.
What does margin mean for options?
Is paying an option premium the same as meeting a writer’s collateral requirement?
No. A buyer generally pays the option premium; for an option held only as an option, its loss is limited to that premium plus applicable costs. This is different from the collateral or margin supporting a writer’s obligations. A short option’s requirement depends on the product, position, account permissions and broker rules; covered, cash-secured and multi-leg positions are not all an uncovered option with one universal percentage.
The premium-only statement ends at the boundary of the option position. Exercise can create shares or futures requiring funding and carrying new price risk. Fictional share-delivery example: one 100-share call at $2 per share costs $200 before fees; exercising its $50 strike requires $5,000 for 100 shares under the stated terms. The resulting stock’s losses are not capped by the $200 premium. A cash-settled option instead produces its specified cash amount, not those shares.
Likewise, a textbook matched spread payoff does not by itself guarantee automatic coordination of exercise and assignment or cap every resulting position’s exposure. See Exercise, Assignment and Settlement for that distinction and Index, ETF and Futures Options for settlement differences. These are risk mechanisms, not suggested trades.
How is leverage measured?
How large is the exposure compared with the money in the account?
One common measure is notional value divided by account equity. In a fictional account of $20,000: shares worth $40,000 bought on margin give 2 to 1; one futures contract with $100,000 notional value gives 5 to 1. A 2% move in each underlying changes the account by 4% and 10%. Leverage works in both directions.
Leverage comparison diagram
Illustrative diagram constructed for teaching. Not real market data.
The diagram compares a fictional $20,000 account holding $20,000 of stock (1 to 1), $40,000 of stock on margin (2 to 1) and one futures contract with $100,000 notional value (5 to 1), with the account change for a 2% move shown below each bar. All values are made up.
What this does not tell you about leverage
- Real margin requirements, which change and differ by broker.
- How much leverage suits anyone.
- Margin interest rates or account rules for a specific broker.
- Nothing here suggests using or avoiding leverage.
Watch the lesson explained
Check yourself
- Why is futures margin not a loan? Hint: performance bond.
- A fictional $10,000 account holds $50,000 in notional value. What is the leverage ratio? Hint: notional ÷ equity.
- In the fictional call example, why are $200 and $5,000 different amounts? Which risk statement applies before exercise, and what changes after shares are acquired? Hint: Option premium, purchase obligation and resulting-position exposure are different quantities.
Reflect on your own process
- How does your plan define leverage, and does your journal record notional value against equity for each position you study?
- Where would you find the current margin requirement for a product, and how do you note the date you checked it?
- What does your written process say to review before an option position could become a stock or futures position?