In plain words: The money borrowed from a brokerage firm to purchase an investment.
Margin refers to borrowing money from a brokerage to buy investments beyond what your own cash would allow. It is an advanced mechanism that amplifies both gains and losses, and it is not something a beginner needs in order to invest well.
How does buying on margin work?
When you trade on margin, the broker lends you part of the purchase price, using the assets in your account as collateral. This is a form of leverage: a small price move can produce an outsized result on your own money. If the position falls in value, the broker may issue a "margin call" demanding more funds, and can sell your assets to cover the loan.
Why is margin risky for most investors?
Because losses are magnified, margin can wipe out your capital faster than an unleveraged position, and you still owe the borrowed amount plus interest. For a profile building long-term wealth, a simple, fully owned portfolio avoids this added fragility. Margin is described here so you can recognise it as one of the common beginner mistakes to avoid, not as a tool to reach for.
Key takeaways
- Margin is money borrowed from a broker to buy investments.
- It magnifies both gains and losses and can trigger a margin call.
- It is an advanced, higher-risk mechanism, not a beginner's tool.