Earnings Surprise: Why Stocks Move on Beats and Misses
Joan Sacdalan
An earnings surprise is the gap between a company's reported earnings per share (EPS) and what analysts expected, usually shown as a percentage of the estimate. Stocks move on surprises because prices already reflect the forecast, so only the difference is news, and in the third quarter of 2026 beats were so common that the average S&P 500 stock that beat gained just 0.8% around its report.
This guide shows how to calculate a surprise, how to tell a big one from a small one, and why the same quarter can produce three different surprise figures. It also uses our own price data on six megacap reports from 2026, and walks through Apple's November report step by step.
Key takeaways
- Earnings surprise = (actual EPS − consensus estimate) ÷ consensus estimate. Compare adjusted with adjusted, from the same data provider.
- In Q3 2026, 84% of reporting S&P 500 companies beat EPS estimates, but by only 2.7% in aggregate, the smallest since Q4 2022.
- FactSet found beats earned +0.8% on average around the report, while misses lost 1.1%, far less than the 5-year average of −3.1%.
- In our check of six megacap reports, three of the four companies that beat fell the next session.
- Revenue, guidance and the data source can matter more than the EPS beat itself.
What is an earnings surprise, and how do you calculate it?
Before each quarterly report, analysts publish forecasts for a company's EPS and revenue. Data providers such as LSEG, FactSet and Zacks average them into a consensus estimate. When the company reports, the earnings surprise is how far the actual number landed from that consensus.
Earnings surprise (%) = (actual EPS − consensus EPS) ÷ |consensus EPS| × 100. A positive result is a beat, a negative result is a miss. Use the absolute value of the estimate when the estimate is negative, so the sign still shows whether the company did better or worse.
Apple's fiscal fourth quarter of 2026 is a clean example. Apple reported EPS of $2.10, and analysts polled by LSEG expected $1.99, according to CNBC. The surprise was ($2.10 − $1.99) ÷ $1.99 = +5.53%.
The same formula works for revenue. Apple reported revenue of $114.48 billion against $113.39 billion expected, a revenue surprise of about +0.96%. Investors look at both, because cost cuts or one-time items can lift EPS while sales disappoint.
What is standardized unexpected earnings (SUE)?
A percentage surprise ignores how predictable a company is. A 5% beat is unusual for a steady utility and routine for a volatile chipmaker. Standardized unexpected earnings, or SUE, adjusts for that by dividing the surprise by how much analyst estimates or past surprises normally vary.
The American Association of Individual Investors (AAII) gives a worked example for Simply Good Foods. It reported EPS of $0.36 against a consensus of $0.274, with a standard deviation of estimates of $0.030. Its SUE was ($0.36 − $0.274) ÷ $0.030 = 2.9, meaning the result landed almost three standard deviations above the average forecast.
"Stock prices are dictated by expectations, and prices fluctuate as these expectations are affirmed or are proven to be unfounded."
— John Bajkowski, "How to Analyze Earnings Surprises," AAII Journal (July 2022)
SUE is what most academic studies use to sort companies, including the research behind post-earnings announcement drift.
How often do companies beat estimates, and how do stocks react?
Most companies beat. FactSet's November 6, 2026 report, with 88% of S&P 500 companies reported for the third quarter, found 84% beat EPS estimates, 4% matched them and 12% missed. The 5-year average beat rate is 78% and the 10-year average is 77%.
The beats were common but small. In aggregate, companies reported earnings 2.7% above estimates, against a 5-year average of 7.5% and a 10-year average of 8.0%.
"If 2.7% is the actual number for the quarter, it will mark the lowest earnings surprise percentage reported by the index since Q4 2022 (1.3%)."
— John Butters, Senior Earnings Analyst, FactSet, Earnings Insight (November 6, 2026)
Beat rates differ by sector. Energy (95%), Information Technology (94%) and Health Care (93%) had the highest share of companies beating, and Materials (57%) the lowest. On revenue, 74% of companies beat, above the 5-year average of 70%, by 2.1% in aggregate.
How the market reacts to an earnings surprise: S&P 500, Q3 2026 vs 5-year average
Q3 20265-year average
The market reaction tells the rest of the story. Companies that beat saw an average price change of +0.8% from two days before to two days after their report, slightly below the 5-year average of +0.9%. Companies that missed fell 1.1% on average, much less than the 5-year average of −3.1%. In this quarter, a beat earned little and a miss cost less than usual.
How did a real earnings surprise play out? An Apple example
TruthSayer's Earnings AI took this trade in its funded account before members received the alert. Prices are daily closes from Intrinio; estimates are from LSEG as reported by CNBC.
- Know the consensus. Apple reported its fiscal fourth quarter of 2026 after the market closed on Monday, November 2. Analysts expected EPS of $1.99 and revenue of $113.39 billion.
- Open before the report. Earnings AI bought 5 shares on November 2 at $337.31, a position of $1,686.55.
- Score the surprise. EPS came in at $2.10, a +5.53% surprise. Revenue was $114.48 billion, about +0.96%. From Apple's SEC filings, EPS a year earlier was about $1.84, so earnings grew about 14%.
- Read the guidance. Apple guided to a gross margin of 45% to 46% for the next quarter, below the 46.3% analysts expected. The shares fell about 3% after hours.
- Measure the reaction. On November 3, Apple closed at $331.72, down 2.18% from its $339.11 close on report day. SPY rose 0.29%, so Apple lagged the market by 2.47 points despite the beat.
- Exit and count the result. On November 4, Apple closed at $349.60, up 5.39% in a day. Earnings AI sold at $354.13. The gross gain was $84.10. After $9.98 in commission, the net gain was $74.12, or 4.39%.
Two lessons stand out. The EPS beat did not set the first reaction; the margin guidance did. And the first reaction did not set the outcome either: two days later the stock was well above its report-day close. A plan that judged the trade only on the morning after would have sold at the low.
Why can the same report show different surprises?
Because the "actual" and the "estimate" are not always measured the same way. Companies report GAAP EPS, which follows accounting rules, and often an adjusted EPS that removes items they consider one-time. Data providers also poll different groups of analysts.
One quarter, three earnings surprises: JPMorgan Q2 2026 by data source
JPMorgan Chase's second quarter of 2026 shows how much this matters. Against adjusted EPS of $6.14, Zacks' consensus of $5.59 gives a +9.84% surprise and AlphaStreet's $5.74 gives +6.97%. Using reported EPS of $7.70, which included $1.56 per share of significant items such as a gain on Visa shares, Investing.com's comparison with $5.55 gives +38.74%.
Big-name misses can be accounting effects too. FactSet compares GAAP EPS for some companies, so its Q3 2026 list shows Alphabet at $2.12 against $3.02 and Meta at $3.83 against $6.54. FactSet notes that Alphabet's figure included an $8.7 billion loss on equity securities and Meta's a $9.89 billion litigation charge. CNBC reported Alphabet's adjusted EPS as $2.67 against $3.02, an 11.59% miss rather than about 30%.
Never compare a GAAP actual with an adjusted estimate, or one provider's actual with another's estimate. Check which basis the headline uses before you react to the size of a beat or miss.
What counts as a big or small earnings surprise?
There is no official threshold. The useful comparison is with what is normal for the market and for the company. FactSet's averages give market-wide reference points; the company's own history of surprises gives the rest.
| Surprise | How it compares | What it suggests |
|---|---|---|
| Below 0% (miss) | 12% of S&P 500 companies in Q3 2026 | Rare, so it gets attention; the average reaction was −1.1% this quarter |
| 0% to +2.7% | Below this quarter's aggregate surprise | Close to a match; often already priced in |
| +2.7% to +8.0% | Between this quarter's aggregate and the 10-year average | A normal beat; guidance usually decides the move |
| Above +8.0% | Above the 10-year aggregate average | A large beat by historical standards; still check revenue and guidance |
Compare a surprise with the company's own past too. A company that has beaten by 10% for eight straight quarters may disappoint the market with a 3% beat, because investors expected another large one. That is the idea behind SUE.
Which earnings surprise measures should you use?
| Measure | What it tells you | Weak spot | Use it? |
|---|---|---|---|
| Headline "beat" or "miss" | Direction only | 84% of companies beat; it carries little news | No, not alone |
| EPS surprise % | Size of the earnings gap | Depends on GAAP vs adjusted and the provider | Yes |
| Revenue surprise % | Whether sales, not just costs, beat | Revenue surprises are usually small | Yes |
| SUE | How unusual the surprise is for that company | Needs a history of estimates | Yes, for screening |
| GAAP actual vs adjusted estimate | Nothing reliable | Mixes two definitions of earnings | No |
| EPS + revenue + guidance together | Whether the outlook changed | Takes reading the release, not just the headline | Yes |
Earnings quality matters as well. A beat driven by cash flow is more convincing than one driven by accounting items; our guide to free cash flow explains how to check. And because the E in the P/E ratio is EPS, a surprise also changes how expensive a stock looks, as covered in what is a good P/E ratio.
Who should track earnings surprises?
Best for active investors and earnings traders
If you trade around reports, the surprise, revenue and guidance are the core of every decision. Our guide on how to trade earnings shows how to compare the actual move with the move options prices expected.
Best for long-term investors checking a thesis
For long-term holders, a string of surprises says whether the business is doing better or worse than the market assumes. One quarter matters less than the direction over several.
Less useful for index investors
If you own a broad index fund, individual surprises average out. The market-wide figures from FactSet are interesting context, but they do not call for any action.
How much time and money does it take?
Checking one report takes about 15 to 30 minutes: the press release, the consensus and the guidance. Company releases and SEC filings are free, and free financial news sites publish consensus estimates. Provider-grade estimate histories, needed for SUE across many stocks, come from paid services such as FactSet and LSEG.
What are the most common mistakes with earnings surprises?
Treating the beat as the news
With 84% of companies beating, a beat is the default. What moves the stock is how the whole report compares with what investors were really expecting.
Mixing measures and providers
As the JPMorgan chart shows, one quarter produced surprises from 6.97% to 38.74% depending on the source and the EPS basis.
Ignoring revenue and guidance
Apple beat EPS by 5.53% and still fell 2.18% the next day after guiding margins below expectations.
Judging by the first hour
After-hours moves can reverse. Microsoft rose about 4% after hours on October 28, 2026, then closed down 0.24% the next session.
Before the report, write down the consensus EPS, revenue and the one guidance item the market is watching, with the source. After the report, fill in the actuals next to them before you look at the price.
Is beating earnings estimates good news for a stock?
Not on its own, and in 2026 often not at all. A common belief is that a beat lifts the stock. Our check of six megacap reports says the market needs more than a beat.
Earnings surprise vs next-day move: six megacap reports, 2026
EPS surprise vs consensusShare price, next session
Of the four companies that beat, three closed lower the next session. Tesla beat by 11.63% and fell 3.11%. Apple beat by 5.53% and fell 2.18%. Microsoft beat by 3.38% and slipped 0.24%. Only Nvidia, which also guided well above expectations, rose, by 8.63%. Of the two that missed, Alphabet fell 12.85% and Amazon fell 1.56%, slightly less than the market's 1.79% drop that day.
Six reports are a small sample, and we do not claim a rule from them. But they match FactSet's market-wide numbers: a +0.8% average reward for beats, below the 5-year average. Estimates are a target companies usually clear. The real test is whether the report changes the outlook. Even then, as our guide to post-earnings announcement drift shows, most of the reaction now happens within days.
The TruthSayer Surprise Scorecard: five checks for any report
We use these five checks to read any earnings report. They take about 15 minutes and work for a single stock or a watchlist. The order matters: check the inputs before you react to the price.
- Match the measures. Compare adjusted EPS with the adjusted consensus, or GAAP with GAAP, from one provider. Note the source.
- Size the surprise. Calculate the percentage and compare it with the company's own past surprises and with the market's average, +2.7% in Q3 2026.
- Check revenue. A beat on both EPS and revenue is stronger than an EPS beat on cost cuts.
- Read the guidance. Find the one or two forward numbers analysts were watching. Guidance below expectations can outweigh any beat, as Apple's margin guide did.
- Compare with the market. Subtract SPY's move from the stock's next-session move. Judge the reaction against the market, and decide in advance how long you will wait before acting on it.
How does TruthSayer AI use earnings surprises?
Earnings AI scans US-listed companies ahead of their reports and opens positions in a funded account, typically one to four hours before the report. It is a bet on the surprise and the reaction before they happen, not on reading the headline afterward. Members see each alert only after the trade is placed, and every trade, winners and losers, stays on the public list.
As of November 8, 2026, the Earnings AI page shows a 31.85% return since inception against 35.09% for the S&P 500 over the same dates, so the strategy trails the index. It also shows a 72.8% win rate, an average hold of 29 days, a Sharpe ratio of 3.94 and a beta of 0.30. Each position is capped at 5% of the portfolio with a trailing stop.
TruthSayer AI claims compliance with GIPS®, the global performance reporting standard; see our GIPS reports and verification. For a checklist to apply to any signal provider, including us, read how to judge a signal service.
We picked six of the largest US companies by market value that reported between August and November 2026 and had an LSEG consensus that CNBC reported on the same basis as the actual. Meta was left out because no comparable adjusted estimate was reported. Next-session moves are our calculation from the last regular-session 15-minute bar each day from Intrinio. Earnings AI figures come from its public page and trade list on November 8, 2026.
What should you do after an earnings surprise?
- Your stock beat but fell: read the guidance and revenue before acting. If the outlook is intact, a one-day drop is not a reason to sell on its own.
- Your stock missed: check whether the miss was GAAP-only, like Alphabet's and Meta's in FactSet's table, or a real shortfall in the business.
- You traded the report: follow the exit you set. Apple fell 2.18% on the first day and rose 5.39% on the second.
- Every report: log the consensus, the actual, the guidance and the reaction against SPY. After 20 reports, you will know which surprises your stocks actually respond to.
For terms used in this guide, see our glossary entry on earnings releases, or see every live trade, including the losers, on Earnings AI.
The bottom line: An earnings surprise is the gap between actual and expected EPS, and it only means something when both are measured the same way. In 2026, beats were the norm and earned little: 84% of companies beat, by 2.7%, and three of four megacap beats we tracked fell the next day. The TruthSayer Surprise Scorecard keeps the focus where the market looks: match the measures, size the surprise, check revenue, read the guidance and judge the reaction against the market.
Frequently asked questions
What is an earnings surprise?
It is the difference between a company's reported earnings per share and the analyst consensus estimate, usually expressed as a percentage of the estimate. A positive surprise is a beat and a negative one is a miss. In Q3 2026, 84% of reporting S&P 500 companies beat, by 2.7% in aggregate, according to FactSet.
How do you calculate earnings surprise percentage?
Subtract the consensus EPS from the actual EPS, divide by the absolute value of the consensus, and multiply by 100. Apple's fiscal Q4 2026 EPS of $2.10 against a $1.99 LSEG estimate gives ($2.10 − $1.99) ÷ $1.99 = +5.53%. Compare adjusted with adjusted, from one data provider.
What is a good earnings surprise percentage?
There is no official threshold. Compare with the market and the company's history. The S&P 500's aggregate surprise averaged 8.0% over 10 years and was 2.7% in Q3 2026. A beat above the company's usual range, with revenue and guidance also above expectations, is stronger than a large EPS beat alone.
Why do stocks sometimes rise after missing earnings?
Because the miss was smaller than feared, or guidance, revenue or a one-time charge changed the picture. GAAP misses can come from accounting items: FactSet notes Meta's Q3 2026 GAAP EPS included a $9.89 billion litigation charge. Prices reflect expectations, so a report better than whispered fears can lift a stock.
A stock I own beat estimates but fell. Should I sell?
Not because of the drop alone. Check why it fell: guidance, margins or revenue. If your reason for owning it still holds, a one-day move is noise. Apple beat by 5.53% in November 2026, fell 2.18% the next day, then rose 5.39% the day after. Decide on the outlook, not the price.
I bought before earnings and the company missed. What now?
Go back to your plan. If you set a stop or a loss limit, follow it. Then check whether the miss is GAAP-only or a real shortfall, and whether guidance changed. Do not add to the position to average down. Log the surprise, the reaction and your result for next time.
Sources
- FactSet, John Butters, Earnings Insight (Nov 6, 2026)
- AAII Journal, John Bajkowski, How to Analyze Earnings Surprises (July 2022)
- AlphaStreet, JPMorgan Chase releases Q2 2026 financial results (Jul 14, 2026)
- Investing.com, Earnings call transcript: JPMorgan Chase tops Q2 2026 forecasts (Jul 14, 2026)
- CNBC, Apple fiscal fourth-quarter 2026 earnings (Nov 2, 2026)
- CNBC, Microsoft fiscal first-quarter 2027 earnings (Oct 28, 2026)
- CNBC, Alphabet third-quarter 2026 earnings (Oct 28, 2026)
- CNBC, Amazon third-quarter 2026 earnings (Oct 29, 2026)
- CNBC, Tesla third-quarter 2026 earnings (Oct 21, 2026)
- CNBC, Nvidia second-quarter fiscal 2027 earnings (Aug 26, 2026)
- Zacks Equity Research via Yahoo Finance, JPMorgan Chase (JPM) tops Q2 earnings estimates (Jul 14, 2026)
- US SEC EDGAR, Apple Inc. annual and quarterly filings (accessed Nov 8, 2026)
- Intrinio, US equity 15-minute price history (Aug–Nov 2026)
- TruthSayer AI, Earnings AI performance and trade list (Nov 8, 2026)
This article is for educational purposes only and is not investment advice. Past performance does not guarantee future results.
Joan Sacdalan
Joan specializes in financial data analytics, market intelligence, and investment research at TruthSayer AI. Her expertise spans fundamental and technical analysis, emerging market trends, and data-driven investment strategies, turning complex financial data into clear, actionable intelligence for risk-aware investors.
