BigEarnings tracks what happens to stock prices after every earnings report: 1-day, 1-week, 1-month, and ER-to-ER. That data is interesting to look at. But the real question is: how do you turn it into actual trade ideas?
This is a practical walkthrough. Five steps, from screening to position management.
Step 1: Find Stocks with Positive 1-Week Drift After Beats
Start by filtering for companies where the stock went up in the week after an earnings beat. Not all beats produce positive price action (we wrote about why stocks drop on beats). You want the ones where the beat translated into buying.
On BigEarnings, search any ticker and look at the earnings history table. Focus on the 1-week column. If a stock has beaten 6 of the last 8 quarters AND gone up in the week after at least 5 of those 6 beats, you have a pattern worth investigating.
Example: Say Company X beat EPS estimates the last 7 quarters. In 6 of those 7, the stock was up an average of +3.8% one week after the report. That's a consistent signal.
Step 2: Confirm the Drift Extends to 1-Month
A 1-week pop that fades by week three is not post-earnings drift. It's a short squeeze or momentum chasers that quickly reverse. Real drift extends.
Check the 1-month column for the same stock. If Company X's average 1-month post-beat return is +6.2%, and the 1-week average is +3.8%, the drift is extending. The stock is gaining an additional +2.4% in weeks 2-4. That's sustained buying, not a one-day pop.
If the 1-month return is lower than the 1-week return, the initial move is fading. That's a less reliable setup.
Step 3: Check the Growth Trajectory Score
Price action alone is not enough. You need to confirm that the company's fundamentals support the continued move. This is where the Growth Trajectory Score comes in.
A stock with positive post-earnings drift AND a Growth Trajectory Score above 70 is backed by fundamental growth. Revenue is accelerating, margins are expanding, beat quality is high. That's a stock drifting up for a reason.
A stock with positive drift but a Growth Trajectory Score below 50? The price action may be driven by short covering or momentum rather than fundamentals. It can still work as a trade, but the confidence level is lower and you should size accordingly.
Step 4: Wait for the Next Earnings Setup
You have a stock with a pattern of beating, drifting up, and strong fundamentals. Now what? Wait for the next earnings date.
Use the BigEarnings Calendar to track when the stock reports next. One to two weeks before the report, review the pre-earnings checklist: consensus estimates, guidance trend, sector beat rate, and implied move.
This is where most investors fail. They find a good pattern but then chase the stock after it has already reported and moved. The better approach is to identify the pattern between earnings, then position ahead of the next report. The pattern gives you a probabilistic edge. Patience gives you a better entry price.
Step 5: Size and Manage Risk
This is where data meets discipline.
Position sizing: Even the best earnings setup is still a probabilistic bet. A stock that has rallied after 6 of 7 beats will eventually have the quarter where it doesn't (see our piece on what happens when streaks break). Size the position so that a 10% adverse move post-earnings doesn't wreck your portfolio. For most investors, 3-5% of total portfolio per earnings trade is a reasonable ceiling.
Entry timing: You can enter before earnings (higher risk, higher reward) or wait for the initial reaction and buy the drift (lower risk, smaller return). The data shows that roughly 60% of the 1-month drift occurs in the first 3 trading days after the report. If you're going to ride the drift rather than position ahead, get in early.
Exit rules: Set these before the report. If the stock beats and gaps up, how long will you hold? Our data suggests the sweet spot is 15-25 trading days post-earnings for capturing the majority of drift. Beyond that, the signal degrades as other factors (macro, sector rotation, next quarter's expectations) start to dominate.
Putting It All Together
A hypothetical example to illustrate the full process:
- You screen BigEarnings and find that ACME Corp has beaten EPS 7 of the last 8 quarters. Six of those seven beats produced positive 1-week returns averaging +4.1%.
- The 1-month average post-beat return is +7.3%, confirming extended drift.
- ACME's Growth Trajectory Score is 81, placing it in the top 15% of all companies.
- ACME reports on February 12th after market close. You add it to your Watchlist and review the pre-earnings checklist a week before.
- You size the position at 4% of your portfolio and set an exit plan: hold for 20 trading days post-earnings, or exit immediately if the stock drops below the pre-earnings price.
No outcome is guaranteed. ACME could miss this quarter, or beat and drop because of guidance. But you have a repeatable process backed by data, and over dozens of trades, that process generates an edge.
Start Screening
- AI Top Picks are pre-screened using this exact methodology. Start there for the strongest setups each quarter.
- Search any ticker on BigEarnings to run Steps 1-3 manually
- Build your earnings watchlist with 15-30 names that pass the filters
- Review the pre-earnings checklist for each stock 1-2 weeks before its report date
Start free to access post-earnings data for 6,200+ companies and build your own data-driven process.