IDEXX Laboratories Reports Soon: How Has The Stock Reacted To Past Earnings?
IDEXX Laboratories (NASDAQ:IDXX) is scheduled to report its earnings on Monday, November 2, 2026. The company has a market value of about $45.5 billion. Over the last twelve months it generated $4.6 billion in revenue and $1.5 billion in operating profit, with net income of $1.1 billion.
Nobody knows how the market will take the numbers. What we can measure is how IDEXX Laboratories stock has reacted to its past earnings releases, which is useful context for anyone trading around the event.
See the earnings reaction history of all stocks
How Often Has IDEXX Laboratories Stock Risen After Earnings?
Some observations on one-day (1D) post-earnings returns, measured from the last close before each release:
- There are 20 earnings releases in the last five years, with 11 positive and 9 negative one-day (1D) returns. Positive 1D returns were seen 55% of the time.
- Over the last three years that share rises to 58%, across 12 releases.
- The median of the 11 positive 1D returns is 8.5%, and the median of the 9 negative ones is -4.6%.
- The largest one-day reactions were 27.5% and -9.8%.
The table below shows the 1D, 5-day (5D) and 21-day (21D) returns after each release, followed by summary statistics.
| Earnings Date | 1D | 5D | 21D |
|---|---|---|---|
| 8/4/2026 | 3.6% | 4.9% | -4.0% |
| 5/5/2026 | -0.03% | -5.5% | -0.4% |
| 2/2/2026 | -4.6% | -3.9% | -5.2% |
| 11/3/2025 | 14.8% | 12.5% | 16.4% |
| 8/4/2025 | 27.5% | 22.9% | 19.4% |
| 5/1/2025 | 9.0% | 12.5% | 18.7% |
| 2/3/2025 | 11.1% | 8.9% | 4.6% |
| 10/31/2024 | -9.8% | -6.1% | -6.5% |
| 8/6/2024 | 3.1% | 5.5% | 3.6% |
| 5/1/2024 | -5.0% | -1.8% | 1.4% |
| 2/5/2024 | 8.5% | 8.5% | 5.9% |
| 11/1/2023 | -1.0% | 5.8% | 16.6% |
| 8/1/2023 | -4.0% | -8.4% | -7.8% |
| 5/2/2023 | -4.5% | -0.8% | -5.1% |
| 2/6/2023 | 0.6% | 0.7% | -1.7% |
| 11/1/2022 | 9.8% | 7.1% | 18.4% |
| 8/2/2022 | 0.2% | 2.2% | -12.4% |
| 5/4/2022 | -5.7% | -22.0% | -11.4% |
| 2/2/2022 | 4.0% | 1.6% | 4.9% |
| 11/2/2021 | -5.9% | -4.8% | -10.1% |
| Statistic | 1D | 5D | 21D |
|---|---|---|---|
| # Positive | 11 | 12 | 10 |
| # Negative | 9 | 8 | 10 |
| Median Positive | 8.5% | 6.4% | 11.2% |
| Median Negative | -4.6% | -5.2% | -5.9% |
| Max Positive | 27.5% | 22.9% | 19.4% |
| Max Negative | -9.8% | -22.0% | -12.4% |
Correlation Between 1D, 5D And 21D Post-Earnings Returns
Another approach is to wait for the initial reaction and ask whether it tends to continue. The table below shows the correlation between the 1D return and the return over the following 5 and 21 trading days, and between the 5D return and the following 21 trading days. A value near 1 means the first move has tended to continue; near -1, to reverse; near 0, no consistent pattern. Looking at the five-year window, none of the correlations are strong enough to trade on, with all values falling below 0.40 in absolute terms. Over the shorter three-year window, however, the first-day move shows a notable tendency to reverse (-0.59 against the next 5 days, -0.48 against the next 21) – though that pattern rests on just 12 releases.
| History | 1D vs next 5D | 1D vs next 21D | 5D vs next 21D |
|---|---|---|---|
| 5 Years | -0.11 | -0.11 | 0.00 |
| 3 Years | -0.59 | -0.48 | -0.03 |
Is There Any Correlation With Peer Earnings?
Neogen (NEOG) and Thermo Fisher Scientific (TMO) usually report about 7 to 22 days before IDEXX Laboratories, and have already reported this season. This time, Thermo Fisher stock rose 1.0% the day of its October 21 report, and Neogen stock fell 2.3% the day after its October 6 report. The table compares each peer’s one-day reaction to its own earnings with IDEXX Laboratories’ one-day reaction to the report that followed. The correlations are NEOG (-0.18), TMO (0.36); the closer to 1, the more the peer’s reaction has foreshadowed IDEXX Laboratories’.
| IDXX Earnings Date | IDXX 1D | NEOG 1D | TMO 1D |
|---|---|---|---|
| 8/4/2026 | 3.6% | 22.7% | 8.7% |
| 5/5/2026 | -0.03% | -2.9% | -9.2% |
| 2/2/2026 | -4.6% | 31.6% | -2.6% |
| 11/3/2025 | 14.8% | 16.5% | 1.7% |
| 8/4/2025 | 27.5% | -10.9% | 9.1% |
| 5/1/2025 | 9.0% | -28.7% | -0.7% |
| 2/3/2025 | 11.1% | -5.4% | 6.8% |
| 10/31/2024 | -9.8% | -7.1% | -1.7% |
| 8/6/2024 | 3.1% | 1.6% | 4.1% |
| 5/1/2024 | -5.0% | -9.3% | 0.5% |
| 2/5/2024 | 8.5% | -8.4% | -5.0% |
| 11/1/2023 | -1.0% | -5.3% | -5.5% |
| 8/1/2023 | -4.0% | -1.5% | 0.6% |
| 5/2/2023 | -4.5% | n/a | -2.8% |
| 2/6/2023 | 0.6% | n/a | 3.0% |
| 11/1/2022 | 9.8% | n/a | -2.3% |
| 8/2/2022 | 0.2% | -2.1% | 2.7% |
| 5/4/2022 | -5.7% | n/a | 7.4% |
| Correlation | – | -0.18 | 0.36 |
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