On May 18, 2026, IDEXX Laboratories Inc IDXX shares rose 3.2% today, closing at $545.79. The stock has been experiencing volatility, with a 52-week range of $496.61 to $769.98.
- GF Valueâ„¢ verdict: Current price is $545.79, which is 12.7% below the GF Valueâ„¢ estimate of $625.16.
- GF Scoreâ„¢: 99/100, indicating a strong overall performance.
- Most notable signal: Insiders sold $18.2M in the last 3 months, indicating a lack of confidence in the stock by those closest to the company.
Is IDXX Overvalued or Undervalued?
The current price of IDEXX Laboratories Inc at $545.79 suggests that the stock is undervalued relative to its GF Valueâ„¢ of $625.16, indicating a potential upside of 12.7%. This margin of safety presents an opportunity for investors to consider, as the stock is labeled as "modestly undervalued" by GF Valuation. GF Valueâ„¢ is GuruFocus' proprietary measure of intrinsic value, calculated from historical trading multiples, past business growth, and future performance estimates.
However, while the undervaluation signals a possible buying opportunity, the recent insider selling raises concerns about the company's short-term outlook. The combination of a high GF Scoreâ„¢ of 99/100 and strong profitability and growth rankings suggests that the company's fundamentals remain solid despite the insider activity.

How Does IDXX's Valuation Compare to Its History?
| Metric | Current | Historical |
|---|---|---|
| P/E (TTM) | 40.2x | 51.4x |
| Forward P/E | 37.3x | N/A |
IDEXX's current P/E (TTM) of 40.2x is significantly below its 5-year median P/E of 51.4x, suggesting that the stock is trading at a lower valuation compared to its historical average. The forward P/E of 37.3x also supports the notion that the stock remains relatively inexpensive. This P/E analysis aligns with the GF Valueâ„¢ verdict of being undervalued, reinforcing the potential opportunity present in the current market environment.

What Does IDXX's GF Scoreâ„¢ Tell Us?
| Metric | Rating |
|---|---|
| GF Scoreâ„¢ | 99/100 |
| Financial Strength | 7/10 |
| Profitability | 10/10 |
| Growth | 10/10 |
| Valuation | 10/10 |
| Momentum | 7/10 |
The GF Scoreâ„¢ of 99/100 indicates that IDEXX Laboratories Inc is positioned for strong long-term returns, with particularly high marks in Profitability and Growth (10/10 each) and Valuation (10/10). However, the Financial Strength score of 7/10 and a Momentum rank of 7/10 suggest that there may be areas for improvement, particularly in the context of recent stock performance and insider activity.

What Are Insiders Doing with IDXX Stock?
In the last three months, insiders have sold a total of $18.2 million in shares of IDEXX Laboratories Inc, indicating a significant level of selling activity. This trend can suggest a lack of confidence among insiders regarding the company's near-term prospects. While insider selling does not necessarily imply a negative outlook, it warrants caution as it may reflect concerns that are not apparent from public data alone.
There has been no insider buying reported during this period, which could further emphasize the cautious sentiment among those with the most intimate knowledge of the company's operations.
What This Means for Investors
Based on the GF Valueâ„¢ assessment, IDEXX Laboratories Inc is currently undervalued. With a GF Valueâ„¢ of $625.16 compared to the current price of $545.79, there appears to be a 12.7% upside potential. However, investors should consider the recent insider selling and the mixed signals regarding short-term momentum.
For the complete analysis, visit the IDEXX Laboratories Inc IDXX stock page. You can also explore the GF Valueâ„¢ page for detailed valuation methodology, or use the GuruFocus Stock Screener to find similar opportunities.
Frequently Asked Questions
What is IDXX's GF Scoreâ„¢?
IDEXX Laboratories Inc has a GF Scoreâ„¢ of 99/100, indicating a strong overall performance based on key financial metrics and historical data.
Is IDXX overvalued or undervalued?
IDEXX Laboratories Inc is currently undervalued, with a GF Valueâ„¢ of $625.16 compared to its current price of $545.79, suggesting a potential upside.
What is IDXX's P/E ratio?
IDEXX Laboratories Inc has a P/E (TTM) ratio of 40.2x, which is significantly below its 5-year median P/E of 51.4x, indicating that the stock is trading at a lower valuation than its historical average.
This stock alert was generated using automated technology and GuruFocus financial data to provide readers with timely and accurate market reporting. This content was reviewed by GuruFocus editorial team prior to publication. Please send any questions or comments about this story to [email protected].
