Buy the Rumor, Sell the News
"Buy the rumor, sell the news" describes one of the market’s most reliable patterns: a stock rises on the anticipation of good news, then falls — or simply stops rising — the moment that news is actually confirmed. The move happens before the event, not after it, because by the time everyone knows, everyone who was going to buy has already bought. For options traders this saying is not folk wisdom; it is a direct description of how implied volatility behaves around a scheduled event, and getting it wrong is the classic way to lose money while being right about the direction.
Open the Iron Condor calculator →Why the news is already priced in
Markets are forward-looking. If a company is widely expected to report strong earnings, launch a product or win approval, buyers step in ahead of the date and bid the price up in anticipation. By the announcement, the expected outcome is already reflected in the price — "priced in". When the news then confirms what everyone assumed, there are no new buyers left to push it higher, and the traders who bought the rumor take their profit. That selling is the "sell the news" leg, and it is why a stock can fall on genuinely good results.
The mirror image is "sell the rumor, buy the news": markets can price in a feared outcome, then rally with relief once the bad news is merely as-bad-as-expected rather than worse. The mechanism is the same — what moves price is the surprise versus expectations, not the raw headline.
The options twist: IV crush
Around a scheduled event — earnings above all — implied volatility rises as traders bid up options to bet on or hedge the move. Elevated IV makes every option expensive. The instant the event passes, the uncertainty is gone and IV collapses. This is "IV crush", and it is why buying a call or put right before earnings so often loses money even when you guess the direction correctly: the stock moves your way, but the option loses more value to the volatility collapse than it gains from the move.
That is the mechanical version of "buy the rumor, sell the news". The rumor phase is rising IV and rising price; the news is the crush. Long-premium buyers are on the wrong side of it, and premium sellers are on the right side — provided the actual move stays inside what the inflated premium already paid for.
How to trade around it
If you expect an event to be a "sell the news" moment, buying expensive options into it is the trap. The traders who lean on this adage instead sell premium into the elevated pre-event IV — an iron condor or a short strangle collects the inflated volatility and profits from the crush, as long as the stock stays within the expected range. The risk is a genuine surprise that blows through your strikes, so these are defined-risk or carefully sized trades, not free money.
If you genuinely expect a surprise the market has not priced, the honest expression is a long option or debit spread — but you must be right enough on direction and size to overcome the IV crush working against you. The discipline the saying teaches is simple: before any known event, ask what is already priced in, and never pay up for what everyone already expects.
- Markets price in expected events in advance; price reacts to the surprise versus expectations, not the raw headline.
- Good news can send a stock down simply because it was already fully priced in — that is "sell the news".
- The options version is IV crush: options inflate before an event and collapse right after, punishing pre-event buyers.
- Traders using the adage sell elevated pre-event premium (iron condor, short strangle) rather than buying it — with defined or sized risk.
Frequently asked questions
Why does a stock fall on good news?
Because the good news was already expected and priced in before the announcement. Once it is confirmed there are no new buyers left, and the traders who bought in anticipation sell to take profit — "sell the news".
What is IV crush?
The sharp drop in implied volatility right after a scheduled event like earnings. Options inflate beforehand on uncertainty and deflate the instant it passes, which is why buying options into earnings often loses money even when the direction is right.
How do options traders play "sell the news"?
By selling the elevated pre-event premium rather than buying it — for example an iron condor or short strangle that profits from the volatility crush as long as the stock stays within the expected range. It is defined-risk or carefully sized, because a genuine surprise can still blow through the strikes.
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