What is Quest Diagnostics Inc worth?
With the base-case assumptions below, a discounted cash flow model on Quest Diagnostics Inc's reported free cash flow gives $154.85 per share. The share price was $257.99 on November 10, 2026, 67% above that value.
Inputs from the filings
Three sets of assumptions
| Case | Growth yrs 1-5 | Discount rate | Value per share | Value vs price |
|---|---|---|---|---|
| Bear | -2.0% | 10.0% | $80.06 | -69% |
| Base | 3.0% | 9.0% | $154.85 | -40% |
| Bull | 8.0% | 8.0% | $294.52 | +14% |
Sensitivity: base case value per share
| 1.5% | 2.0% | 2.5% | 3.0% | 3.5% | |
|---|---|---|---|---|---|
| 7.0% | $207.68 | $223.66 | $243.20 | $267.62 | $299.02 |
| 8.0% | $168.37 | $178.73 | $190.98 | $205.68 | $223.65 |
| 9.0% | $139.59 | $146.68 | $154.85 | $164.39 | $175.67 |
| 10.0% | $117.62 | $122.66 | $128.37 | $134.90 | $142.43 |
| 11.0% | $100.31 | $104.00 | $108.13 | $112.78 | $118.05 |
Where the presets come from
Base: years 1 to 5 grow at Quest Diagnostics Inc's revenue growth rate over the last 5 fiscal years (3.2% a year), held between -5% and 15%. Years 6 to 10 grow halfway between that and the long-run rate of 2.5%. Future cash is discounted at 9% a year.
Bear: 5 points less growth, 2% long-run growth, 10% discount rate. Bull: 5 points more growth (at most 25%), 3% long-run growth, 8% discount rate.
Value per share = (present value of 10 years of free cash flow + present value of everything after + cash - debt) / diluted shares.
This is a model run on assumptions, not a recommendation or a price target. Small changes in the discount rate or growth move the result a lot, as the table above shows. Change them yourself in the calculator.
Adjust the assumptions
Move the sliders for growth, long-run growth and discount rate, or switch to average free cash flow, and see the value per share change.
Adjust the assumptions