Dexcom (DXCM)
S&P 500 · Nasdaq-100 · Health Care · data since 2005-04-14 · last close 2026-09-09
Dexcom (DXCM) monthly returns (%)
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 10.1 | 0.5 | -14.5 | -5.2 | 23.8 | -8.7 | 23.9 | 9.1 | -7.9 | · | · | · |
| 2025 | 11.7 | 1.8 | -22.7 | 4.5 | 20.2 | 1.7 | -7.5 | -6.7 | -10.7 | -13.5 | 9.0 | 4.6 |
| 2024 | -2.2 | -5.2 | 20.5 | -8.2 | -6.8 | -4.5 | -40.2 | 2.2 | -3.3 | 5.1 | 10.7 | -0.3 |
| 2023 | -5.4 | 3.7 | 4.7 | 4.4 | -3.4 | 9.6 | -3.1 | -18.9 | -7.6 | -4.8 | 30.1 | 7.4 |
| 2022 | -19.8 | -3.9 | 23.6 | -20.1 | -27.1 | 0.1 | 10.1 | 0.2 | -2.0 | 50.0 | -3.7 | -2.6 |
| 2021 | 1.4 | 6.1 | -9.7 | 7.4 | -4.3 | 15.6 | 20.7 | 2.7 | 3.3 | 14.0 | -9.7 | -4.6 |
| 2020 | 10.1 | 14.6 | -2.4 | 24.5 | 12.9 | 7.2 | 7.4 | -2.3 | -3.1 | -22.5 | 0.0 | 15.7 |
| 2019 | 17.7 | -1.2 | -14.5 | 1.6 | 0.2 | 23.5 | 4.7 | 9.4 | -13.0 | 3.4 | 47.4 | -3.8 |
| 2018 | 1.4 | -3.5 | 32.1 | -1.3 | 20.2 | 7.9 | 0.2 | 51.8 | -0.9 | -7.2 | -2.4 | -7.5 |
| 2017 | 32.6 | -1.3 | 8.4 | -8.0 | -14.3 | 9.4 | -8.9 | 12.0 | -34.4 | -8.1 | 29.9 | -1.8 |
| 2016 | -13.0 | -8.7 | 4.4 | -5.2 | 0.2 | 23.0 | 16.3 | -1.2 | -3.8 | -10.8 | -16.6 | -8.6 |
| 2015 | 8.6 | 1.6 | 2.6 | 8.4 | 6.1 | 11.5 | 5.8 | 11.2 | -8.8 | -3.0 | 2.0 | -3.7 |
| 2014 | 14.3 | 11.5 | -8.3 | -21.6 | 4.1 | 17.5 | -5.0 | 17.3 | -9.5 | 12.4 | 14.5 | 7.0 |
| 2013 | 12.1 | -2.0 | 12.1 | -1.9 | 26.9 | 7.8 | -3.0 | 24.2 | 4.3 | 1.8 | 15.2 | 7.0 |
| 2012 | 17.8 | -1.6 | -3.3 | -6.2 | 10.0 | 20.4 | -15.1 | 20.8 | 13.0 | -12.8 | -0.1 | 3.9 |
| 2011 | 3.4 | 3.7 | 6.1 | 7.3 | -5.3 | -8.1 | -2.1 | -15.2 | -0.3 | -18.4 | -18.1 | 16.1 |
| 2010 | 12.3 | -0.2 | 7.7 | 12.4 | -3.8 | 9.8 | -3.5 | 9.6 | 8.1 | 4.3 | -18.2 | 21.0 |
| 2009 | 17.0 | 25.4 | 2.2 | 8.2 | 24.1 | 11.3 | 4.4 | 20.9 | 1.5 | -13.5 | 5.7 | 11.3 |
| 2008 | -4.8 | -12.4 | -43.8 | 86.0 | 2.5 | -23.4 | 11.3 | 2.4 | -10.0 | -27.0 | -55.8 | 38.0 |
| 2007 | -9.7 | -9.1 | -2.8 | 1.4 | -17.7 | 24.9 | -1.9 | 14.6 | 8.7 | -7.0 | -7.0 | 2.1 |
| 2006 | 27.4 | -8.2 | 16.2 | 24.1 | -22.7 | -30.2 | -12.4 | 8.0 | -13.3 | -20.9 | 27.9 | -12.4 |
| 2005 | · | · | · | -14.8 | 40.0 | -11.4 | -11.1 | 12.9 | -6.6 | 12.0 | 7.8 | 6.4 |
| Avg | 6.8 | 0.6 | 0.9 | 4.4 | 3.9 | 5.2 | -0.4 | 8.4 | -4.4 | -3.2 | 3.3 | 4.5 |
Values in %. Current and first-listed months are partial (greyed).
returnsview.com
DXCM seasonality — average by calendar month
Dexcom has monthly history back to 2005. Its strongest month by median is January — positive in 15 of 21 years, median +10.1%, and higher in 6 of the last 9. October is the soft spot, down in 13 of 21 with a median of -7.0%. Across its full record it has closed 55% of months higher, swings ±15.7% in an average month and has fallen 94.6% peak to trough.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg | +6.8% | +0.6% | +0.9% | +4.5% | +3.9% | +5.2% | -0.4% | +8.4% | -4.2% | -3.2% | +3.3% | +4.5% |
| Win rate | 71%/21 | 43%/21 | 57%/21 | 55%/22 | 59%/22 | 73%/22 | 45%/22 | 77%/22 | 29%/21 | 38%/21 | 57%/21 | 57%/21 |
Win rate = share of positive months / sample size.
DXCM risk & extremes
DXCM drawdown & rolling returns
Percent below the all-time high at each month-end — how far underwater the asset was.
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Frequently asked questions
What was Dexcom's best month?+
Dexcom's strongest completed month on record is April 2008, at +85.99%.
What was Dexcom's worst month?+
Its weakest completed month on record is November 2008, at -55.75%.
Is Dexcom up this year?+
Dexcom is up 26.38% year to date, measured from its last close before 1 January.
What is Dexcom's 1-year return?+
+6.99% over the past twelve months, comparing the latest close with the most recent close on or before the same date a year earlier.
What is Dexcom's biggest drawdown?+
The deepest peak-to-trough fall on record is 94.6%, measured on month-end closes since 2005.
Which calendar month is historically best for Dexcom?+
August has the highest average return across every completed August since 2005. An average is not a forecast.
About Dexcom
Dexcom is an S&P 500 company, a health care business worth about $32 billion. It turns lab coats into cash flows — with price receipts on this site going back to 2005. And the long game: $100 at its first close here (2005) would be about $3,639 today.
Did you know?
- Its best month on record was April 2008 at +85.99%; its worst, November 2008 at -55.75%.
- It has closed August in the green 17 out of 22 times — past performance, future shrug.
Trivia for entertainment — the numbers come from our price data; the jokes don't.