Event days

Some sessions are not normal sessions. Budget day, an RBI decision, a major election result — these have their own structure, and trading them as though they were ordinary Tuesdays is a reliable way to lose money on a day you knew about in advance.

What makes an event day different#

Volatility is priced in beforehand. Options covering the date are already expensive. You are not discovering risk; you are paying for it.

Liquidity thins at exactly the wrong moment. Around the announcement, spreads widen sharply and depth disappears. The price on your screen becomes far less reliable than usual.

The first move is frequently wrong. The initial reaction responds to a headline. As the detail is read, it often reverses — sometimes completely, within minutes.

Ranges are wide in both directions. A day can travel a long way up and a long way down and close near unchanged. Stops that would be sensible on a normal day get taken out by noise.

The shape of a budget day#

The most extreme example, and the pattern generalises.

Before the speech. IV elevated, direction unclear, and positioning cautious.

During. Violent two-way movement as individual announcements land. Sectors move on specific allocations while the index oscillates. This is the least tradeable window of the entire year.

Immediately after. The market begins pricing the whole picture rather than fragments. Initial moves frequently reverse.

The following days. The considered reaction. Very often more informative than anything on the day itself.

That last point is worth sitting with: the most useful information from a major event usually arrives after the event, once the detail has been digested and positioning has settled.

Why direction is not the trade#

Suppose you know the outcome in advance. You would still frequently lose money buying options on it, for two reasons:

IV crush. The premium collapses once uncertainty resolves. A correct directional call can be outweighed by the fall in implied volatility, exactly as with earnings.

The move must beat the implied move. The market has already priced a range. Being right about direction but smaller than priced is a loss.

So on event days you are not betting on the outcome. You are betting on the size of the reaction relative to what was priced — a much harder question, and one most people never ask.

The three honest positions#

Flat. Close before the event. Costs an opportunity, removes a risk you cannot analyse. For most traders most of the time, this is correct.

Reduced and defined. Half size or less, with defined risk. Appropriate if you have a specific view on the move versus what is implied.

Selling premium into it. Collects inflated premium and profits from IV crush. Wins often; the rare loss is severe. Defined risk only, and not something to attempt without having traded through a shock before.

Notice what is missing: buying naked options the day before because you have a feeling about the outcome. That is the position most retail traders take and structurally the hardest to win with.

After the event#

Wait for spreads to normalise. Fifteen to thirty minutes at minimum after a major release.

Let volatility settle. IV crush is often severe immediately after. Selling premium into the collapse is different from selling into elevated IV before it — the opportunity has already passed.

Re-read the structure. Levels from before the event may no longer be meaningful, exactly as the technical-analysis-fails lesson describes. Prior structure was built on information that has been replaced.

Expect a second reaction. The considered move over following sessions frequently differs from the immediate one, and is usually more durable.

Check yourself

0 of 4 answered

1. 1.You know in advance that a policy decision will be market-positive. Why might buying calls still lose money?

   Calls cannot profit from policy decisionsIV crush after the announcement, plus the requirement that the move exceed what was already impliedExchanges suspend options on event daysPolicy decisions never move markets

2. 2.Why is the first move after a major announcement often wrong?

   Algorithms deliberately create false movesThe initial reaction responds to a headline before the detail is digested, and frequently reversesExchange data is delayed during eventsIt is not wrong; the first move is usually correct

3. 3.What should you decide before an event day, and when?

   Your direction, during the announcementFlat, hedged or reduced — written down the evening beforeNothing; event days should be traded reactivelyYour profit target, at the open

4. 4.Why do stops behave badly on event days specifically?

   Brokers disable them during announcementsIn fast, thin conditions the next available price can be far from your level, so slippage is likelyStops only work in trending marketsExchanges cancel stop orders on event days

What to take away

• Event days have priced-in volatility, thin liquidity, and wide two-way ranges.
• The first move is frequently wrong — it reacts to the headline, not the detail.
• You are betting on the size of the reaction versus what was implied, not on the outcome.
• Three honest positions: flat, reduced and defined, or selling premium with defined risk.
• Decide the evening before, in writing.
• Stops slip on event days. Size for a bad fill.
• The considered reaction over following days is often more informative than the day itself.