Stocks can move dramatically after reporting earnings, but do they usually gap higher or lower? To find out, I analyzed dozens of post-earnings setups and compared the results with decades of academic research on earnings announcements. The results were surprisingly one-sided: 40 stocks (65.6%) gapped higher after earnings, while 21 stocks (34.4%) gapped lower. In this article, I’ll break down what causes earnings gaps, what financial research says about post-earnings price reactions, how bull and bear markets influence gap direction, and what traders should consider before trying to predict whether a stock will gap up or down.
Every earnings season, thousands of day traders, swing traders, and long-term investors ask the same question: Will this stock gap higher or lower after earnings?
Unfortunately, there isn’t a simple answer.
Earnings gaps depend on far more than whether a company beats earnings expectations. Revenue growth, forward guidance, investor expectations, market sentiment, and broader bull or bear market conditions can all influence how a stock reacts.
Although traders often focus on individual earnings reports, surprisingly little publicly available research answers one basic question: How often do stocks actually gap higher versus lower after earnings?
So, to better understand this phenomenon, I analyzed dozens of post-earnings set ups from my own research database and compared the findings with decades of academic research on earnings announcement reactions and post-earnings announcement drift (PEAD).
The following article is an in-depth breakdown of what the data revealed.
Quick Answer: How Often Do Stocks Gap Up vs. Gap Down After Earnings?
Based on my current database of 61 post earnings set ups, stocks were significantly more likely to gap higher than lower after earnings. Specifically, 40 stocks (65.6%) gapped higher, while 21 stocks (34.4%) gapped lower. However, traders should not assume every earnings beat results in an upside gap. Revenue, forward guidance, profit margins, investor expectations, and overall market conditions all influence whether a stock gaps higher or lower after reporting earnings.
How Often Do Stocks Gap Up vs. Gap Down?
Results from 61 post earnings set ups tracked in the Paper Trading Journal database.
Moderate first-hour moves produced the strongest continuation characteristics in the current PTJ research.
First-hour reactions above 20% generally produced less favorable reward-to-risk characteristics.
Key Statistics – Upside vs Downside Earnings Reactions
- Based on PTJ’s proprietary data, 40 stocks (65.6%) gapped higher after earnings, while only 21 stocks (34.4%) gapped lower after earnings.
- Stocks in my sample were approximately 1.9× more likely to gap higher than lower.
- Nearly 2 out of every 3 post earnings set ups produced an upside gap.
- More than 1 out of every 3 post earnings set ups still resulted in a downside gap.
- My research found that moderate first-hour moves between 5% and 15% produced the strongest momentum characteristics.
- By comparison, stocks that moved 20% or more during the first hour generally produced less favorable reward-to-risk opportunities.
- Academic researchers have documented Post-Earnings Announcement Drift (PEAD) for more than 50 years, showing that earnings surprises frequently continue influencing stock prices after the initial market reaction.
- Decades of financial research have identified earnings announcements as one of the market’s most information-rich events, often producing statistically significant overnight price jumps as investors rapidly incorporate new information.
How Often Do Stocks Gap Up Vs. Down? – PTJ Research Results
The dataset used for this study only includes 61 post earnings set ups, so these results should be viewed as an early snapshot rather than a definitive market-wide conclusion.
That said, of those 61 set ups, 40 stocks gapped higher after earnings, compared with 21 that gapped lower. That means 65.6% of the stocks in my sample gapped up, while 34.4% gapped down.
| Gap Direction | Count | Percentage |
|---|---|---|
| Gap Up | 40 | 65.6% |
| Gap Down | 21 | 34.4% |
Put another way, stocks in this dataset were approximately 1.9 times more likely to gap higher than lower.
The most surprising takeaway is how lopsided the results were: nearly two out of every three post earnings set ups initially moved higher, even though weak earnings reactions were still common enough to represent more than one-third of the sample.
Why Stocks Gap Higher After Earnings
Stocks typically gap higher after earnings when the company delivers results that exceed investor expectations.
While earnings per share (EPS) and revenue beats are important earnings metrics to watch, the biggest upside reactions often occur when companies also raise forward guidance, expand profit margins, or provide an optimistic outlook during their earnings call.
In these situations, institutional investors may quickly reprice the stock’s future earnings potential, creating strong buying pressure before the market opens.
As shown above, my own research found that 40 of the 61 post earnings set ups (65.6%) initially gapped higher after earnings, suggesting that positive earnings reactions were nearly twice as common as negative ones in this sample.
What Can Cause a Stock to Gap Higher?
Results exceed analyst expectations.
Management improves its future outlook.
Profitability improves faster than expected.
Large investors rapidly reprice the stock.
40 of the 61 post earnings set ups in the current PTJ database produced an initial upside gap.
However, it should be noted that an upside gap alone does NOT guarantee that a stock will continue moving higher.
In fact, both momentum continuation and mean reversion are very common, meaning a stock can either gap higher before extending its rally, trading sideways, or reversing lower.
Either way, the finding that stocks gap up more often than down feels intuitive, at least at first glance.
Since the broader stock market has historically trended higher over long periods, it’s reasonable to expect that companies would be rewarded for strong earnings more often than they are punished for weak results.
Academic research also shows that earnings announcements are among the most information-rich events in financial markets, frequently triggering immediate price jumps as investors rapidly revalue companies based on new financial information.
Even so, the data also shows that more than one-third (34.4%) of post earnings set ups gapped lower, highlighting that disappointing financial results, weak guidance, or overly optimistic investor expectations can still produce significant downside reactions.
Why Stocks Gap Lower After Earnings
Conversely, stocks typically gap lower after earnings when a company delivers results that fall short of investor expectations or when management signals weaker future growth.
While earnings and revenue misses frequently trigger downside gaps, some of the largest selloffs occur when companies also lower forward guidance, report contracting profit margins, or issue a cautious outlook during their earnings call.
When institutional investors reduce their future earnings expectations, selling pressure can quickly overwhelm buyers, causing the stock to gap sharply lower before the opening bell.
What Can Cause a Stock to Gap Lower?
Reported results fall short of analyst expectations.
Management reduces its revenue or earnings outlook.
Rising costs weaken profitability and future earnings potential.
Large investors rapidly reduce their valuation estimates.
21 of the 61 post earnings set ups in the current PTJ database produced an initial downside gap.
Although downside gaps were less common in my research, they still accounted for 21 of the 61 post earnings set ups (34.4%).
In other words, more than 1 out of every 3 earnings reactions in my database resulted in an immediate downside gap.
This reinforces the idea that strong earnings are never guaranteed and that disappointing guidance or elevated investor expectations can quickly erase shareholder value.
Interestingly, my broader research suggests that downside earnings reactions often produce cleaner downside momentum than upside earnings reactions produce on the long side.
This is particularly true when weak earnings are accompanied by shrinking revenue, contracting margins, lowered forward guidance, and decisive technical breaks below hourly, 4-hour or daily support levels.
While every earnings report is unique, these factors can combine to create high-conviction bearish post earnings set ups that continue trending lower after the initial gap.
Gap Up vs. Gap Down – What Academic Research Says
For more than 50 years, academic researchers have documented a phenomenon known as Post-Earnings Announcement Drift (PEAD), where stocks often continue moving in the direction of an earnings surprise rather than fully adjusting immediately after the announcement.
Numerous studies have found that this effect persists across different markets and time periods, making PEAD one of the most widely documented market anomalies in finance.
From a momentum trader’s perspective, however, whether stocks gap up or gap down more often isn’t the most important takeaway.
What matters is that earnings gaps frequently continue moving in the same direction after the initial reaction, creating potential trading opportunities for both bullish and bearish post earnings set ups.
My own research supports this idea while adding an important nuance.
Although stocks were approximately 1.9× more likely to gap higher than lower, the strongest continuation moves generally occurred after moderate first-hour moves between 5% and 15%.
By comparison, stocks that had already surged or collapsed 20% or more during the first hour were significantly less likely to produce attractive reward-to-risk opportunities.
Bull Markets vs. Bear Markets
The overall market environment can have a significant impact on how stocks react to earnings.
During bull markets, investors are generally more willing to reward companies for strong earnings, raised guidance, and positive future outlooks, making upside gaps more common and often more sustainable.
In contrast, bear markets and market corrections tend to produce more cautious investor behavior, with disappointing earnings and lowered guidance frequently resulting in larger downside gaps.
It’s also important to remember that earnings don’t exist in isolation.
Geopolitical events, wars, interest rate decisions, inflation, recessions, banking crises, and changes in U.S. presidential administrations can all influence investor sentiment and risk appetite.
During periods of heightened uncertainty, even companies reporting strong earnings may struggle to sustain upside momentum, while weak earnings can be punished more severely.
As a result, traders should always evaluate earnings reactions within the context of the broader market.
A strategy that performs well during a strong bull market may produce very different results during a bear market or periods of elevated macroeconomic uncertainty.
Can Traders Predict Earnings Gaps?
Not reliably. In my current research database of post earnings set ups, 65.6% gapped higher after earnings, while 34.4% gapped lower.
Yet, even though stocks were nearly twice as likely to gap higher, earnings gaps remain inherently unpredictable, no matter what a stock chart might look like.
The problem is that, before a company releases its earnings report, traders don’t know whether it will beat or miss analyst expectations, what management will say about future guidance, or how the market will interpret the results.
As a result, attempting to predict whether a stock will gap higher or lower before earnings is largely speculation rather than analysis.
However, traders can improve their understanding of an earnings reaction after the news becomes public by evaluating factors such as the size of the earnings and revenue surprise, forward guidance, technical structure, short interest, sector performance, and the overall market environment.
Rather than trying to predict earnings, many momentum traders prefer to wait for the market’s initial reaction and trade the probabilities that follow.
| Finding | Result | Takeaway |
|---|---|---|
| Current PTJ Database | 61 post earnings set ups | Growing proprietary research database |
| Gap Up Frequency | 40 stocks (65.6%) | Nearly 2 out of every 3 earnings reactions were bullish |
| Gap Down Frequency | 21 stocks (34.4%) | More than 1 out of every 3 reactions were bearish |
| Upside vs Downside | 1.9× more likely to gap higher | Stocks favored upside gaps in this sample |
| Best Momentum Range | 5–15% first-hour move | Produced the strongest continuation characteristics |
| Extended Moves | 20%+ first-hour move | Often produced less attractive reward-to-risk |
| Most Common Bullish Catalysts | EPS beat, revenue beat, raised guidance, expanding margins | Strong fundamentals increase the likelihood of upside gaps |
| Most Common Bearish Catalysts | Misses, lowered guidance, shrinking margins | Weak outlook often outweighs EPS alone |
| Academic Research | PEAD documented for 50+ years | Earnings gaps frequently continue moving in the direction of the surprise |
| Overall Conclusion | Don’t predict the gap. | Wait for the earnings reaction, then trade the probabilities. |
Conclusion – How Often Do Stocks Gap Up Vs. Gap Down?
Based on my current research, stocks were nearly twice as likely to gap higher than lower after earnings, with 65.6% producing upside gaps.
However, traders should NOT assume that every earnings beat leads to higher prices, or that misses lead to lower stock prices.
Investor expectations, forward guidance, and market psychology often influence earnings reactions just as much as the reported numbers themselves.
While the data in this study is interesting, the goal for momentum traders shouldn’t be to predict which stocks will gap higher or lower after earnings, or often they gap up vs. down—it’s to understand how the market reacts after new information becomes available.
The market doesn’t pay traders for predicting earnings—it rewards them for correctly interpreting the data.
Every earnings gap tells a story. The challenge isn’t guessing which way a stock will move on the news; it’s recognizing when the market has created an opportunity after the news becomes public.
If you want to go deeper:
- Explore the Trading Statistics Hub to understand how different sectors behave across market cycles
- Study real setups inside the Trade Reviews section
- Learn the framework behind high-probability setups in the Post-Earnings Momentum Strategy
This is how you turn raw market data into repeatable trading edge.
More Trading Statistics…
FAQ – How Often Do Stocks Gap Up or Gap Down After Today?
Do most stocks gap up after earnings?
Based on my current database of 61 post earnings set ups, 40 stocks (65.6%) gapped higher after earnings, while 21 stocks (34.4%) gapped lower. Although upside gaps were nearly twice as common as downside gaps in this sample, the results should be viewed as an ongoing study rather than a definitive representation of the entire stock market.
Why do stocks gap after earnings?
Stocks gap after earnings because investors quickly revalue a company after comparing its reported financial results with analyst expectations. Earnings per share (EPS), revenue, forward guidance, profit margins, and management commentary can all influence how much buyers and sellers are willing to pay once new information becomes available.
What causes a stock to gap higher after earnings?
Stocks typically gap higher when they report stronger-than-expected financial results, raise forward guidance, improve profit margins, or provide an optimistic outlook for future growth. Strong institutional buying following positive earnings surprises can also contribute to large upside gaps.
What causes a stock to gap lower after earnings?
Downside gaps usually occur when companies miss earnings or revenue expectations, lower future guidance, report contracting profit margins, or issue weaker-than-expected forecasts. Stocks can also gap lower after reporting seemingly good results if investor expectations were even higher.
Is beating earnings enough to make a stock gap higher?
No. A company can beat analyst EPS estimates and still gap lower if revenue disappoints, forward guidance is weak, or investors were expecting an even stronger quarter. In many cases, future expectations matter just as much as the reported numbers.
Can you predict whether a stock will gap up or down before earnings?
Not reliably. Before earnings are released, nobody knows exactly what the company will report or how investors will react. Attempting to predict an earnings gap beforehand is largely speculation. Many momentum traders instead wait for the earnings announcement and trade the market’s reaction rather than trying to predict it.
Do stocks usually continue moving after an earnings gap?
Often, yes. Academic research has documented Post-Earnings Announcement Drift (PEAD) for more than 50 years, showing that stocks frequently continue moving in the direction of a significant earnings surprise after the initial gap. However, not every earnings gap continues, and some quickly reverse or consolidate.
What size earnings gaps tend to produce the best momentum opportunities?
Based on my current research, moderate first-hour moves between approximately 5% and 15% have produced the most attractive momentum characteristics. By comparison, stocks that have already moved 20% or more during the first hour often appear more extended and have generally produced less favorable reward-to-risk opportunities.
Are earnings gaps larger during bull markets or bear markets?
Market conditions play an important role in earnings reactions. During bull markets, investors generally reward positive earnings more aggressively, while bear markets often produce stronger reactions to disappointing earnings, lowered guidance, and negative macroeconomic news. External events such as recessions, geopolitical conflicts, and changes in monetary policy can also influence earnings gaps.
Should traders buy every stock that gaps up after earnings?
No. An upside gap alone does not guarantee additional gains. Traders should also consider factors such as the size of the initial move, forward guidance, trading volume, technical breakouts, overall market conditions, and whether the stock appears extended after the earnings reaction.
References
Bernard, V. L., & Thomas, J. K. (1989). Post-earnings-announcement drift: Delayed price response or risk premium? Journal of Accounting Research, 27, 1–36.
Bernard, V. L., & Thomas, J. K. (1990). Evidence that stock prices do not fully reflect the implications of current earnings for future earnings. Journal of Accounting and Economics, 13(4), 305–340. https://doi.org/10.1016/0165-4101(90)90008-R
Ball, R., & Brown, P. (1968). An empirical evaluation of accounting income numbers. Journal of Accounting Research, 6(2), 159–178. https://doi.org/10.2307/2490232
Chordia, T., Goyal, A., Sadka, G., Sadka, R., & Shivakumar, L. (2009). Liquidity and the post-earnings-announcement drift. Financial Analysts Journal, 65(4), 18–32.
Fama, E. F. (1970). Efficient capital markets: A review of theory and empirical work. The Journal of Finance, 25(2), 383–417. https://doi.org/10.1111/j.1540-6261.1970.tb00518.x
Investopedia. (2025). Earnings season: What investors should know. https://www.investopedia.com/
Lyle, M. R., Rigsby, J. T., Stephan, J. A., & Yohn, T. L. (2025). Earnings announcements and price jumps. Journal of Financial Economics.
Zhang, X., & colleagues. (2024). Investor attention and post-earnings announcement drift. Finance Research Letters.
Note: Statistics reported throughout this article regarding the frequency of earnings gap-ups and gap-downs are based on the author’s proprietary database of 61 post earnings set ups collected through Paper Trading Journal research and are independent of the academic sources cited above.
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