The Nature of Futures Margin

Start here, because almost every wrong answer on the exam comes from treating futures margin like buying stock on margin. It is a different animal, so anchor what it actually is before touching any numbers.

The Performance Bond

The futures industry increasingly calls margin a "performance bond" on purpose: the name signals a deposit, not a payment.

• Performance bond: the futures industry's own term for margin. It is a good-faith security deposit that guarantees a trader can meet the obligations of the futures contract if the market moves against them.
• Good-faith deposit: a small percentage of the contract's full (notional) value, posted up front to cover potential adverse price moves. It is not a down payment toward buying the commodity.
• Both sides post it: a futures contract creates an obligation for the buyer AND the seller, so the long (buyer) and the short (seller) each post the performance bond. Neither side owns anything yet, so it is not an ownership stake.
• No loan, no interest: the trader is not borrowing anything. No loan is extended, and no interest is charged on the deposit. The money stays the trader's own funds, held as security.

Think of it this way: a performance bond works like the security deposit a landlord holds. You hand it over to prove you will honor the lease, the landlord is not lending you anything, and you get it back when you have met your obligations. Futures margin sits in your account as proof you can cover a bad move, not as a loan you owe.

Exam Tip: Gotchas

• Both the long AND the short post margin. Securities margin is posted by the buyer alone. On a futures contract, both sides carry an obligation, so both put up a performance bond. An answer that says only the buyer posts margin is describing securities, not futures.
• Futures margin is a deposit, not a payment or a down payment. If a choice calls it "borrowing," "financing part of the price," or a "partial payment," it is wrong. No money is borrowed and no interest is charged.

Comparison with Securities Margin

To lock in the distinction, line futures margin up against the thing students confuse it with: buying securities on margin.

• Securities margin: buying securities on margin is a partial payment. The customer pays part of the purchase price and the broker-dealer lends the rest as a margin loan, on which the customer pays interest. The customer owns the securities, and the loan has to be repaid.
• Regulation T: the Federal Reserve Board rule that governs securities margin. It sets the maximum a broker-dealer may lend as a percentage of the purchase price. Regulation T applies to securities, not futures.
• Futures margin is fundamentally different: it is a performance bond (a security deposit), involves no broker loan, charges no interest on the deposit, and conveys no ownership.

Exam Tip: Gotchas

• Regulation T governs securities margin, not futures margin. Watch for a distractor that puts futures margin under Regulation T or the Federal Reserve. The Fed's margin authority stops at securities.
• The interest-and-ownership contrast is the tell. Securities margin means a loan, interest, and ownership of the shares. Futures margin means none of the three. If a futures answer mentions paying interest on the margin or "owning" the commodity, it is wrong.

Who Sets and Revises the Requirements

Now that you know what the deposit is, the next tested point is who controls its size. This is where the Federal Reserve gets ruled out.

• The exchanges set the levels: the futures exchanges, through their clearinghouse risk-management function, establish the minimum performance-bond requirement for each contract. This is NOT set by the Federal Reserve and NOT governed by Regulation T.
• The exchanges may revise them: exchanges watch market volatility and can raise or lower requirements. When conditions get volatile, they typically raise requirements to keep the collateral adequate.
• Changes reach existing positions too: a revised requirement can apply to both new and existing positions, so a trader already holding a contract may have to post more when the exchange raises the requirement.

Exam Tip: Gotchas

• The exchanges (via the clearinghouse) set and revise futures margin, not the CFTC and not the Federal Reserve. The Commodity Futures Trading Commission (CFTC) oversees the markets, but the margin levels themselves come from the exchanges. A choice crediting the Fed or the CFTC with setting the numbers is wrong.
• A margin increase can hit a position you already hold. Raising a requirement is not limited to new trades. A trader sitting on an open contract can be required to top up when the exchange lifts the level, even without placing a new order.

Initial and Maintenance Requirements

The exchange actually sets two related numbers, and telling them apart sets up every calculation in the next section.

• Initial requirement: the amount that must be on deposit to open a new futures position.
• Maintenance requirement: the minimum equity that must be kept in the account while the position stays open. It is set below the initial amount.
• How they relate: equity is allowed to drift down from the initial level as prices move against the trader, but only until it reaches the maintenance floor. Touching that floor triggers a call (covered in the next section).

Documentation

A customer cannot trade futures until the paperwork that backs the performance bond is in place.

• Margin agreement: the document the customer signs acknowledging the performance-bond terms and the firm's right to require deposits and to liquidate positions if the customer fails to meet a call.
• Transfer of funds agreement: authorizes the firm to move funds between the customer's accounts as needed to satisfy margin obligations.