Gold finished where it started. Why did the futures account need cash?

Start with the position carried overnight

Picture a jeweller who is long one standard COMEX Gold futures contract while waiting to buy physical metal. The exercise starts with the contract already open. The previous settlement was a hypothetical $3,000.00 per troy ounce. CME specifies 100 troy ounces per GC contract. A one-dollar move in that contract price therefore changes the long position’s value by $100. The price, business and cash balances throughout this example are invented for teaching.

On the worksheet I record contract month, signed quantity, multiplier and previous settlement. I use the settlement for that exact contract month on both dates. Substituting a spot quotation from the shop’s pricing screen would turn this into a comparison between two instruments.

Source notes: [1] CME Group — Money Calculations for Futures and Options · [2] CME Group — About Contract Notional Value

Follow the debit first

Suppose the next settlement is $2,980.00. The $20 decline multiplied by 100 produces a $2,000 settlement debit. For illustration, assume a $15,000 opening account equity balance, no other positions, no fees and no transfers. After that debit the balance is $13,000. The broker’s available-to-withdraw amount is a different field because collateral can be required against the still-open position.

At the following settlement the contract is back at $3,000.00. Use $2,980.00 as the starting price for this second calculation. The $2,000 credit restores the balance to $15,000. Calculating both days from the original $3,000.00 would report zero on the second day and lose the very credit that reconciles the statement.

Source notes: [1] CME Group — Money Calculations for Futures and Options

Ask which day the account needed funding

A two-day chart with only the endpoints would show a flat price. The statement would still contain two cash movements. If the account needed a top-up after the first debit, the jeweller would have needed available funds before the second settlement. If the position had instead been closed after the first debit, there would be no second-day recovery on that contract.

Nothing in this arithmetic establishes a broker’s maintenance threshold, liquidation policy or deadline. To investigate an actual funding request, inspect the dated account notice, other open positions and collateral accepted at the time. A deposit is a transfer into the account. Counting it as trading income would exaggerate the strategy’s return.

Source notes: [3] CME Group — Position and Risk Management

Reconcile the physical purchase separately

If the jeweller buys metal on the second day, add a separate invoice line with the local price, weight, currency and fabrication charge. The cash that bought the metal did not pass through the futures settlement calculation. Matching the two documents reveals both the timing of the cash need and any difference between the metal actually purchased and the exchange exposure.