A friend of mine put on his first crude oil trade convinced he was risking a couple hundred dollars. Oil moved about a dollar against him and he was down a thousand. Nothing strange happened in the market that day. He had just never looked at the contract unit, and one CME crude contract covers 1,000 barrels, so every one dollar move in the price of oil is a thousand dollars moving through your account. The document that would have warned him is about a page long, it sits on the exchange website for free, and hardly anyone reads it before a first trade. It is worth reading, and here is what to look for.
The five numbers that do the real work
Every listed futures contract has a specification page published by the exchange. Most of it is boilerplate about listing cycles and position limits. Five items matter before a first trade.
- Contract unit. What one contract actually represents. 1,000 barrels of crude, 100 troy ounces of gold, 5,000 bushels of corn, or for index futures a cash value equal to the index level times a multiplier.
- Multiplier, sometimes listed as point value. The number that converts the quoted price into dollars. The E-mini S&P 500 uses 50 dollars, so a one point move in the index is worth 50 dollars per contract.
- Tick size. The minimum increment the price can move. The E-mini moves in 0.25 point steps. Crude moves in increments of one cent per barrel.
- Tick value. Tick size times multiplier, which is the smallest amount of money the position can gain or lose in a single price change. This is the unit you should be thinking in when you set a stop.
- Settlement method. Cash settled or physically delivered. This decides what happens if you are still holding at expiry, and the two outcomes are nothing alike.
Notional exposure rarely gets its own line on the sheet, and you do not need one. Quoted price times multiplier is the real economic size of the position. Margin makes a futures position feel small. Notional tells you how big it actually is.
From a CME quote to real dollar risk
Say you pull up the E-mini S&P 500 and the quote reads 5,000.00, a made up number to keep the arithmetic clean. The multiplier is 50 dollars per index point, so one contract carries 5,000 times 50, or 250,000 dollars of notional exposure. If your account holds 25,000 dollars, a single contract means a 1 percent move in the index moves your account 10 percent. You are levered ten to one before you have made a single decision about the trade itself.
Now the tick math. The E-mini trades in 0.25 point increments and each tick is worth 12.50 dollars, four ticks to a point. Suppose you buy at 5,000 with a stop at 4,980. That is 20 points, or 80 ticks, so the planned risk is 80 times 12.50, which comes to 1,000 dollars per contract. If your rule is to risk no more than 1 percent of the account per trade, this position is four times over budget with a single contract, and there is no such thing as half a contract. Your real options are a bigger account, a tighter stop if the setup honestly allows one, or a smaller contract. The Micro E-mini exists for exactly this reason. Its multiplier is 5 dollars per point, one tenth of the E-mini, so the same 20 point stop risks 100 dollars per contract and you can size in steps that actually fit the account.
Run the same arithmetic on anything you plan to trade. Gold is 100 ounces per contract, with a 10 cent tick worth 10 dollars. Crude is 1,000 barrels, with a one cent tick worth 10 dollars. A one dollar move in crude looks tiny on the quote screen and is a thousand dollars in the account, which is exactly the mistake my friend made.
Margin is a deposit, and reading it as a price is the classic mistake
Initial margin is what the exchange requires on deposit to open one contract. Maintenance margin is the lower threshold your equity is allowed to reach before the broker makes you top back up. For the E-mini, initial margin has typically sat somewhere in the low five figures, though exchanges adjust it with volatility and brokers are free to demand more than the exchange minimum, especially for positions held overnight.
The failure mode I keep seeing goes like this. A new trader looks at initial margin, sees a number equal to roughly half their account, and concludes they can afford two contracts. Technically true at the moment of entry. But margin says nothing about risk. It is a performance bond, sized by the exchange to cover a bad day or two of price moves, and losses come out of your equity in full while the requirement stays put. Fall below maintenance and you get a margin call, or with most retail brokers an automatic liquidation at whatever price is on the screen at that moment. Sizing a position off margin quietly hands your exit decision to a risk engine. Size off your stop distance in ticks instead, then confirm the margin is covered with enough room left for the position to breathe.
Cash settled or physically delivered
The settlement line on the spec sheet answers what happens if you hold through expiry. Cash settled contracts, equity index futures being the big example, expire into a final cash mark against your account and that is the end of it. Physically delivered contracts, which include crude, gold, and corn, expire into an obligation to deliver or receive the actual commodity. No retail broker wants you receiving a thousand barrels of oil, so they force close deliverable positions ahead of the delivery window, sometimes with little notice and zero regard for your entry price. The famous stress case is crude in 2020, when the expiring contract briefly traded below zero, partly because holders who could not take delivery all needed out of the same door at once.
The habit that protects you here is boring. For cash settled contracts, note the last trading day. For deliverable contracts, note the first notice day or final trade date, whichever your broker enforces, and plan to roll or close about a week before it. Rolling early costs a little in spread. Getting force closed costs whatever the market decides that morning.
Before the first order in any new market I write down three numbers. Tick value in dollars. Dollars of risk from entry to stop. Notional as a multiple of the account. If any of the three surprises me, either the size is wrong or the market is wrong for the account, and it is much cheaper to find that out on paper. It is also why positions inside Blockcircle lead with notional exposure rather than contract count, since contract count on its own tells you close to nothing. The spec sheet takes about five minutes to read, you only pay that cost once per market, and it spares you from ever learning your contract size the way my friend did.