Futures: standardized bets with a clearing house

Futures are the market that oil companies, farmers, banks and hedge funds use to lock in prices and speculate on almost everything: stock indexes, interest rates, currencies, crude oil, gold, corn, and now bitcoin. For a retail trader they are the cleanest, most transparent market you can access, and also one of the fastest ways to lose a small account. Both things are true.

What a futures contract actually is

A futures contract is an agreement to buy or sell a fixed amount of something at a fixed price on a fixed date in the future. Unlike an option, both sides are obligated. There is no premium; instead, both sides post a deposit called margin with the exchange's clearing house, and profits and losses are settled in cash every single day.

Almost nobody takes delivery. A trader who buys a crude oil future does not want 1,000 barrels; they close the position before expiry, collecting or paying the difference between their entry and exit. Financial futures (stock indexes, rates) settle in cash and never involve delivery at all.

The contract specification

Every futures contract is standardized by the exchange. The spec tells you everything:

With the S&P 500 index at 5,000, one ES contract represents $250,000 of stock exposure. One point of index movement is worth $50. A 1% move (50 points) is $2,500 per contract. The micro version is one-tenth of that and exists precisely so smaller accounts can trade the same market in sensible size.

Margin is not what it means in stocks

In stocks, margin is a loan. In futures, margin is a performance bond: a good-faith deposit that shows you can cover a day's losses. The exchange sets it based on volatility; it might be around $12,000 for ES and around $1,200 for MES, and it changes.

Because the deposit is a small fraction of the contract's value, the leverage is enormous: $12,000 controlling $250,000 is about 20x. Nobody chose that leverage; it is built into the product. Your account balance, not the margin requirement, is what should determine your position size. A $5,000 account trading one MES contract ($25,000 exposure) is 5x leveraged whether the trader thinks about it that way or not.

Daily mark-to-market. Every evening, the clearing house moves cash between winners and losers. If your position loses $800 today, $800 leaves your account tonight, not when you close. If your balance falls below the maintenance margin, you get a margin call and must add funds or your broker closes the position. This is not a threat for someone properly sized; it is a ruin mechanism for someone who is not.

Hours

Futures trade nearly 24 hours a day, Sunday evening through Friday afternoon US time, with a short daily maintenance break. The S&P future reacts to Asian and European news while US stocks are closed, which is why "the futures are down" is a morning headline. Liquidity is deepest during the US stock session and thinnest in the overnight hours; spreads can widen in the middle of the night, and stop orders can fill badly.

Expiry and rolling

Contracts expire on a schedule (quarterly for index futures, monthly for most commodities). Before expiry, traders roll into the next contract by closing the old one and opening the new one, which causes a burst of volume a week or so before expiration. If you hold a position into expiry by accident, it will be cash-settled or, for physical contracts, your broker will close it for you, probably not gracefully. Always know your contract's last trading day.

Who is on the other side

The futures crowd is unusually diverse:

• Commercial hedgers: airlines locking in fuel, farmers locking in grain prices, banks hedging rates. They are the reason the market exists and they are price-insensitive on purpose.
• Institutional speculators and funds: trend followers, macro funds, index arbitrageurs keeping ES in line with the underlying stocks.
• High-frequency firms and market makers: providing the tight spreads.
• Retail: a growing minority, mostly in index and micro contracts, mostly intraday.

Because everything trades on one exchange with one order book, futures are the most transparent market for reading order flow, and the least forgiving of a beginner who thinks a $2,000 account can trade a full-size contract.

Key idea: A futures contract is a standardized obligation with a clearing house in the middle, settled in cash every day. The leverage is built into the product, not chosen by you, so position size must be set by your account balance, never by the margin requirement.

Practical notes

• No PDT rule. The US pattern day trader rule (Module 5) applies to stocks and options, not futures. This is one reason small accounts drift toward futures, and one reason so many of them blow up there.
• Tax treatment in the US is different (Section 1256, a 60/40 long-term/short-term blend regardless of holding period). Not advice; just know it exists and talk to a professional.
• Commissions are per contract, per side, and vary a lot between brokers. On micros the round-trip commission can be a large fraction of a tick, which matters for scalpers.
• Outside the US, the same structure exists on Eurex (Germany), ICE (UK/US), the JPX (Japan), and others. Contract sizes and hours differ; the clearing house model is the same.

Try it: Look up the contract specification page for the Micro E-mini S&P 500 on the CME website. Find the multiplier, tick size, tick value, trading hours and current margin. Then work out: if the index moves 1% against a one-contract position, how many dollars is that, and what percentage of a $5,000 account? Write the answer down. That number is the whole reason position sizing exists.

Recap

• A futures contract obligates both sides; there is no premium, only a margin deposit and daily cash settlement.
• Leverage is built in: the deposit is a small fraction of the exposure, so size by account balance, not margin.
• Contracts are standardized by the exchange; learn the multiplier, tick value, hours and expiry before trading one.
• Futures trade nearly 24 hours on a single order book, with the thinnest liquidity overnight.
• Micro contracts exist so small accounts can trade sensibly; a full-size contract in a small account is a ruin mechanism.