Futures Contracts

TL;DR

Futures contracts are standardized agreements to buy or sell an asset at a predetermined price on a future date. They're traded on exchanges, ensuring both parties fulfill their obligations, unlike forward contracts. People use futures to speculate on price movements or to hedge against future price risk.

1. The Mental Model

Imagine you want to lock in a price today for something you'll need (or have to sell) months from now. A futures contract is like making a firm, legally binding handshake deal for a future transaction, but through a regulated marketplace.

2. The Core Material

A futures contract is an agreement between two parties to buy or sell a specific asset (like commodities, currencies, or stock indices) at a specific price on a specific future date. The key word here is "standardized." This means the quantity, quality, and delivery date are all predefined by the exchange where the futures are traded. This standardization makes them easy to trade.

When you enter a futures contract, you don't typically exchange money for the full value of the asset upfront. Instead, you put up a small percentage of the contract's value, called initial margin. This acts as a good-faith deposit.

Throughout the life of the contract, your margin account is "marked to market" daily. This means that at the end of each trading day, your account is credited with profits or debited with losses based on the day's price movement. If prices move against you significantly, you might receive a margin call, requiring you to deposit more money to maintain your margin level.

Most futures contracts don't result in actual delivery of the asset. Instead, they're typically offset (closed out) before expiration. If you bought a futures contract, you'd sell an identical one to close your position; if you sold one, you'd buy one. Your profit or loss is simply the difference between your entry and exit prices.

Key Differences: Futures vs. Forwards

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Forwards are similar in principle but have crucial differences:

graph TD
    A["Futures Contract"] --> B["Standardized Terms"];
    A --> C["Exchange Traded"];
    A --> D["Daily Marking-to-Market"];
    A --> E["Central Clearing House (Guaranteed)"];
    A --> F["High Liquidity"];

    G["Forward Contract"] --> H["Customized Terms"];
    G --> I["Over-the-Counter (OTC)"];
    G --> J["Settlement at Expiry"];
    G --> K["Counterparty Risk"];
    G --> L["Lower Liquidity"];

    B -.-> H;
    C -.-> I;
    D -.-> J;
    E -.-> K;
    F -.-> L;

As you can see, futures offer more security and liquidity due to their standardized, exchange-traded nature. The clearing house acts as the buyer to every seller and the seller to every buyer, eliminating counterparty risk (the risk that the other side of the contract defaults).

Long vs. Short Futures Positions

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• Long futures position: You agree to buy the underlying asset at the agreed price. You profit if the price rises.
• Short futures position: You agree to sell the underlying asset at the agreed price. You profit if the price falls.

3. Worked Example

Let's say it's October, and you believe crude oil prices will go up by next summer. You decide to buy a crude oil futures contract expiring in July of next year.

1. Contract Details: A standard NYMEX crude oil futures contract is for 1,000 barrels. Let's assume the current July futures price is $80.00 per barrel.
2. Initial Margin: The exchange requires an initial margin of $5,000 per contract. You deposit this into your brokerage account.
3. Taking a Position: You go long (buy) one July crude oil futures contract at $80.00. Your total contract value is 1,000 barrels * $80.00/barrel = $80,000.
4. Price Movement (Day 1): By the end of the day, the July futures price rises to $81.00.
   • Profit/Loss: ($81.00 - $80.00) * 1,000 barrels = +$1,000.
   • Your margin account is credited $1,000. Your balance is now $6,000.
5. Price Movement (Day 2): The next day, the price drops to $79.50.
   • Profit/Loss: ($79.50 - $81.00) * 1,000 barrels = -$1,500.
   • Your margin account is debited $1,500. Your balance is now $4,500.
6. Closing the Position: In June, you decide to close your position. The July futures price is now $85.00. You sell one July crude oil futures contract at $85.00.
   • Total profit from your initial long position: ($85.00 - $80.00) * 1,000 barrels = $5,000.
   • This profit would have been credited to your account over the months through daily marking-to-market.

You made a profit because you correctly predicted the price increase. If the price had fallen, you would have incurred a loss.

4. Key Takeaways

• Futures are standardized, exchange-traded agreements to buy or sell an asset at a set price on a future date.
• They are "marked to market" daily, meaning profits and losses are settled in your margin account every day.
• The clearing house guarantees futures contracts, virtually eliminating counterparty risk.
• Most futures positions are closed out before expiration, not resulting in physical delivery.
• You can go long (bet on price increase) or short (bet on price decrease) with futures.

Common Mistakes to Avoid:

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• Confusing futures with forwards; futures are standardized and exchange-traded.
• Underestimating the impact of daily margin calls; significant price moves can quickly deplete your margin.
• Forgetting that "standardized" means you can't customize contract terms like quantity or delivery date.
• Ignoring the expiration date; you must close or roll over your position before it expires to avoid potential delivery.

5. Now Try It

Imagine you're a farmer who expects to harvest 5,000 bushels of corn in three months. The current spot price for corn is $5.00/bushel, but you're worried prices might drop before your harvest. A three-month corn futures contract (for 5,000 bushels) is currently trading at $5.10/bushel.

What to do: Describe what position you would take in this corn futures contract to hedge your risk, how much you would profit or lose if the spot price of corn at harvest time is