Some weeks carry one major event. Others stack two or three: an inflation release beside a rate decision, or a jobs report in the same week as large-company earnings. The events are separate on a calendar. In the option market they lean on each other.
Each event has its own expiry
With daily expiries, each event lands in a different contract first. The option expiring on the day of the first event holds only that one. The option expiring after the second holds both. Which expiry holds the event sets out the rule.
So the week has a staircase in it. Implied volatility steps up at the first event and steps again at the second. Comparing neighboring expiries shows how much the market assigns to each.
The crush after the first is partial
When the first result is known, its event value leaves. An option expiring that day loses nearly all of its extra premium. An option expiring at the end of the week loses only the first event’s share. The second is still ahead, so that contract stays bid.
This catches traders who expect a full drop in implied volatility after the first print. For the later expiry the fall is smaller than it would be in a one-event week. The general pattern is in the crush around events.
The first result reprices the second
The two events are rarely independent. An inflation print the day before a rate decision changes what the market expects officials to say. A hot print raises the stakes for the decision. A print in line with the estimate can drain some of it.
That shows up in the second step of the staircase. It can grow or shrink within minutes of the first release, before the second event has happened. The price of an event depends on what the market already knows going in.
Positioning waits for the later one
Large participants often hold off on committing until the last event of the week has passed. The reaction to the first can be muted as a result, and it can reverse. A clean move on the first print is sometimes handed back while the market waits. CPI on an expiry Friday is a related case, where a release and a large expiration share a session.
Reading the week
Before the week starts, note which event comes last. That is usually where the patience sits. Then watch the expected move day by day and avoid treating the week as one number. The weekly figure blends everything, and the daily figures show where the risk is concentrated.
The Trader dashboard shows the expected move on SPY, QQQ and IWM beside the dealer map each session, with Dr. NoVo’s written reads. The Week Ahead, published on Sunday evening, sets out the calendar the week is built around.