A gold option is near its strike. Which price decides exercise?

Identify the product and its rule

CME Clearing’s guidance distinguishes automatic exercise of in-the-money options from how exactly at-the-money options are handled. At-the-money treatment varies across products. Contrary instructions can also be restricted, including on expiration day for some series. Use the specific option series and the underlying contract month to determine which rule applies before relying on the general guidance.

A live screen may show spot gold, a continuous futures series or the last trade in a different delivery month. The relevant settlement reference and its time need to be checked separately. The trader can see the same strike printed on the screen and still be comparing the option with the wrong instrument or clock.

Source notes: [1] CME Clearing · Contrary Option Exercise Instructions · [2] COMEX Rulebook · Chapter 115 Gold Option

Small differences can change the resulting exposure

In a hypothetical case, a call has a strike of 4,000. One screen shows 3,999.90, and the applicable reference ultimately prints 4,000.10. Those observations lie on opposite sides of the strike. The governing product terms decide how the position is handled. The example establishes neither the rule for a named contract nor a real exercise result.

Think in terms of the position you could hold once exercise and assignment finish. For a futures option, that can mean a futures position whose margin and price exposure persist after the option disappears. Reconcile the account afterward. An expired option line and a newly opened underlying position can appear in separate parts of the account.

Write down two deadlines

The exchange’s deadline and the customer-facing deadline at the broker may differ. Ask the broker what instruction it accepts and when it must receive it. Save the product reference, broker cutoff, exercise preference and the plan for any resulting futures position. If there is no permitted contrary instruction for the series, document that before the deadline.

If uncertainty remains near the strike, label it as uncertainty in the exposure plan. A worksheet with both possible positions and their operational requirements is more useful than a single precise-looking exercise prediction based on a moving spot screen.