DGX
Quest Diagnostics
PEG ratio, current and historical analysis
- Stocks
- Healthcare
- NYSE: DGX
- PEG Ratio
Quest Diagnostics currently trades with a PE to growth ratio of 2.03, based on Aug 21, 2026 data. Dividing the 25.62 PE ratio by the 12.6% earnings growth rate produces this figure. Relative to the 1.53 average from the past four quarters, the PEG ratio is up by 33%.
DGX PEG ratio history
Historically, Quest Diagnostics has a PEG ratio averaging 1.86 across the last nine years. At 2.03, today's PEG ratio sits 9% more than its historical average. The nine years high came in the Sep 2017 quarter at 8.33, reflecting peak valuation relative to growth. The bottom was reached in the Jun 2021 quarter at 0.04, suggesting attractive value relative to growth during that period.
Quest Diagnostics PEG ratio by year
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| 2025 | 1.4 | 19.56 | 14% |
| 2024 | 7.76 | 19.39 | 2.5% |
| 2023 | N/A | 18.17 | -6.3% |
| 2022 | N/A | 19.31 | -48.9% |
| 2021 | 0.22 | 10.92 | 49.2% |
| 2020 | 0.17 | 11.22 | 67% |
| 2019 | 0.93 | 16.79 | 18% |
| 2018 | N/A | 15.45 | -4.3% |
| 2017 | 0.76 | 17.49 | 22.9% |
| 2016 | N/A | 20.07 | -6.9% |
| 2015 | 0.51 | 14.46 | 28.5% |
| 2014 | N/A | 17.51 | -31.4% |
| 2013 | 0.16 | 9.59 | 59.9% |
| 2012 | 0.91 | 16.7 | 18.3% |
| 2011 | N/A | 19.68 | -27.7% |
Quest Diagnostics PEG ratio by quarter (TTM)
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| Jun 2026 | 1.76 | 22.22 | 12.6% |
| Mar 2026 | 1.47 | 21.37 | 14.5% |
| Dec 2025 | 1.4 | 19.56 | 14% |
| Sep 2025 | 1.48 | 22.06 | 14.9% |
| Jun 2025 | 1.64 | 21.21 | 12.9% |
| Mar 2025 | 3.3 | 21.12 | 6.4% |
| Dec 2024 | 7.76 | 19.39 | 2.5% |
| Sep 2024 | 1.95 | 20.64 | 10.6% |
| Jun 2024 | 2.61 | 18.25 | 7% |
| Mar 2024 | 2.03 | 17.68 | 8.7% |
| Dec 2023 | N/A | 18.17 | -6.3% |
| Sep 2023 | N/A | 17.92 | -34.6% |
| Jun 2023 | N/A | 20.05 | -43% |
| Mar 2023 | N/A | 20.42 | -54.9% |
| Dec 2022 | N/A | 19.31 | -48.9% |
DGX average PEG ratio chart
When comparing to historical data, DGX's PEG ratio sits above the 5 and 10-year averages, but it is lower than the 3-year average.
PEG comparison
With a PEG of 2.03, DGX stands higher than the Healthcare sector and the industry average. Looking at the Healthcare sector average of 0.61, Quest Diagnostics's PEG is 233% higher.
DGX EPS growth
DGX Price vs fair value
DGX PEG vs peers
Relative to its peer stocks LH and QGEN, DGX's PEG ratio is higher.
Frequently asked questions
What is Quest Diagnostics's PEG ratio?
According to Aug 21, 2026 figures, DGX's PEG ratio stands at 2.03.
What is the 3-year average PEG ratio for Quest Diagnostics (DGX)?
DGX's 3-year PEG ratio average is 2.54.
What is the 5-year average PEG ratio for Quest Diagnostics (DGX)?
DGX's 5-year PEG ratio average is 2.02.
What is the highest PEG ratio for DGX?
DGX's PEG ratio topped out at 8.33 during the Sep 2017 quarter - the highest in nine years.
How does the current PEG ratio for DGX compare to its historical average?
Compared to the 9-year average, DGX's PEG ratio stands 9% higher.
Why is Quest Diagnostics's PEG ratio so high?
When a company's earnings growth lags its valuation, the PEG ratio tends to be elevated - as seen with DGX's 2.03 reading.
How is DGX's PEG ratio calculated (Quest Diagnostics PEG ratio formula)?
Computing the PEG ratio involves dividing the PE ratio by the company's earnings per share growth (YoY TTM). As of Aug 21, 2026, Quest Diagnostics has a PE ratio of 25.62. Earnings grew at 12.6% over the TTM period ending Jun 2026. Applying the formula, this gives a PEG ratio of 2.03. PEG RATIO(2.03) = PE RATIO(25.62) / EPS GROWTH(12.6%)
All PEG ratio stats are based on quarterly TTM periods, unless otherwise specified.