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DCF valuation

What is Dexcom Inc worth?

With the base-case assumptions below, a discounted cash flow model on Dexcom Inc's reported free cash flow gives $90.49 per share. The share price was $86.62 on September 25, 2026, 4% below that value.

Inputs from the filings

Free cash flow, fiscal 2025
$1.08B
Average free cash flow, last 5 years
$515.6M
Cash
$1.11B
balance sheet of June 30, 2026
Debt
$0
not reported, counted as 0
Diluted shares, fiscal 2025
405,500,000
Revenue growth per year, last 5 years
19.3%

Three sets of assumptions

CaseGrowth yrs 1-5Growth yrs 6-10After year 10Discount rateValue per shareValue vs price
Bear10.0%6.0%2.0%10.0%$56.05-35%
Base15.0%9.0%2.5%9.0%$90.49+4%
Bull20.0%11.5%3.0%8.0%$154.62+79%

Sensitivity: base case value per share

Discount rate down the side, growth after year 10 across the top. Everything else as in the base case.

1.5%2.0%2.5%3.0%3.5%
7.0%$116.57$124.70$134.64$147.06$163.03
8.0%$96.98$102.25$108.48$115.96$125.10
9.0%$82.73$86.33$90.49$95.35$101.08
10.0%$71.92$74.49$77.39$80.71$84.54
11.0%$63.47$65.35$67.45$69.81$72.49

Where the presets come from

Base: years 1 to 5 grow at Dexcom Inc's revenue growth rate over the last 5 fiscal years (19.3% 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

Dexcom Inc company page