Trading Basics
Leverage and Margin: Power and Danger Explained
Leverage amplifies both gains and losses. Understanding margin calls, leverage ratios, and how to use them safely is non-negotiable before trading any leveraged product.
Key rules
- Leverage amplifies both profits and losses by the same multiple — model both scenarios before trading
- A margin call forces position closure at the worst moment — always keep buffer capital in your account
- Never use maximum available leverage — professional traders use far less than what's available
- Futures and forex positions can lose more than your deposit if extreme moves occur
- Calculate your effective position size with leverage before entry — know your true exposure
Leverage allows you to control a position much larger than your actual capital. If your broker offers 10:1 leverage, you can control $10,000 worth of stock with just $1,000 of your own money. This amplifies returns — and losses — by the leverage multiple.
**How Leverage Works** Example: You buy 100 shares of a $50 stock ($5,000 total). With 10:1 leverage you only put up $500 (10% margin). If the stock rises 10% to $55, your position is worth $5,500. Without leverage your return is 10%. With 10:1 leverage your return is 100% on your $500 capital — but also your entire $500 is gone if the stock falls 10%.
**Margin** Margin is the collateral you provide to access leverage. Initial margin is what you need to open the position. Maintenance margin is the minimum you must keep in the account while the position is open.
**Margin Calls** When your account equity falls below the maintenance margin level, you receive a margin call — the broker demands you deposit more funds or they will close your position automatically, locking in your loss. In fast markets, your position can be closed before you even see the margin call notification.
**Leverage by Market** - US Stocks: up to 4:1 intraday, 2:1 overnight (Pattern Day Trader rules apply if <$25k) - Futures: implied leverage varies by contract — ES S&P 500 futures typically represent ~$200k of exposure with ~$12k margin - Forex: up to 50:1 for US clients (CFTC regulated), up to 500:1 offshore - Crypto perpetual futures: up to 100:1 on some exchanges
**The Golden Rule of Leverage** Never use maximum available leverage. Professional traders rarely use more than 3:1 on equities and prefer 1:1 whenever possible. The purpose of leverage is to free up capital — not to take bigger risks.