Guide · Markets
The Options-Implied Earnings Move: What "Options Price a 9% Swing" Means Before a Company Reports
Before every big earnings report, the headlines say what the options market expects the stock to move. Here is where that number comes from, why it is a range and not a direction, and what Netflix's 9% implied move and 6% actual drop on October 20, 2026 teach about using it.
An options-implied move is the size of the price change, up or down, that the options market expects a stock to make after a known event, usually an earnings report. It is read from the price of the at-the-money straddle, which means buying both a call and a put at the strike nearest the current share price, expiring just after the event. Someone who buys that straddle makes money only if the stock moves further than the straddle cost in either direction, so the straddle price, divided by the share price, is the market's break-even estimate of the move. A $70 stock with a straddle priced at $6.30 implies a move of about 9%. Some services shave the number to roughly 85% of the straddle to estimate one standard deviation rather than the break-even; both conventions are in use, which is why two sites can quote 9.3% and 9.57% for the same stock on the same day.
The number is a range, not a forecast. It says nothing about whether the stock will rise or fall, only how far the options market thinks it may travel. Nor is it a prediction that the stock will move that much: it is the price at which sellers of options were willing to take the risk, and over long samples stocks move less than the implied figure a little more often than they move more, which is why systematic sellers of earnings straddles exist. Implied moves also rise into the event as traders buy protection, so a figure quoted a week before the report is usually smaller than the one quoted on the afternoon of it.
Here is a real example. Netflix reported third-quarter results after the close on October 20, 2026. On October 13, the implied move was about 7.3%, according to Investing.com; by the day of the report CNBC put it at 9%, the largest before a Netflix release since the third quarter of 2022, and TipRanks at 9.57%, or about $6.75 on a $70.53 share price, which gave reference levels of $77.28 and $63.78. The median move after the previous eight reports had been 7.25%. Netflix beat on earnings, $0.87 a share against $0.82, guided fourth-quarter revenue $70 million below consensus, and fell 5.9% to $64.62 in after-hours trading. The move was inside the implied range: a buyer of the straddle at $6.75 would have lost money on a stock that dropped $4.07, while a seller collected the difference. Anyone who used the implied move as a forecast of direction had no edge at all; anyone who used it as a measure of what was already priced had a useful one.
That is the first practical use: calibration. A 9% implied move tells a trader that a 4% reaction is a non-event in the options market's terms, however loud the headline, and that a 12% reaction is a genuine surprise. The second use is position sizing. If a stock is expected to move 9% overnight, a position sized for a normal 1% day is nine times too large for the event, and the implied move gives the number to scale by. The third is comparison across names: on October 21, 2026, options implied moves of about 7% to 8% for Meta, 6% to 7.6% for Tesla and 7.4% for Lam Research, which says the market saw Netflix, a company that had just fired its content chief, as the most uncertain report of the week.
There are limits. The implied move captures the whole expiry window, so if the options expire on Friday and the report is on Tuesday evening, part of the premium is for the three ordinary days that follow. It is a snapshot that changes by the hour. And after the report, implied volatility collapses, which is the reason buying options into earnings loses money even when the stock moves: the move has to beat not only the straddle price but the drop in volatility that comes with the news. Read the figure, note the convention the source uses, compare it with the stock's history, and treat it as the market's estimate of how much is unknown, never of which way it resolves.