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DexCom Inc. (NASDAQ:DXCM)

This company has been moved to the archive! The financial data has not been updated since October 26, 2023.

Analysis of Investments

Microsoft Excel

Adjustment to Net Income (Loss): Mark to Market Available-for-sale Securities

DexCom Inc., adjustment to net income (loss)

US$ in thousands

Microsoft Excel
12 months ended: Dec 31, 2022 Dec 31, 2021 Dec 31, 2020 Dec 31, 2019 Dec 31, 2018
Net income (loss) (as reported) 341,200 154,700 493,600 101,100 (127,100)
Add: Unrealized gain (loss) on marketable debt securities (2,300) (1,700) (200) 400 100
Net income (loss) (adjusted) 338,900 153,000 493,400 101,500 (127,000)

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).


The financial performance from 2018 through 2022 is characterized by a transition from initial net losses to a period of sustained profitability. A significant peak in net income was recorded in 2020, followed by a contraction in 2021 and a subsequent recovery in 2022.

Net Income Trajectory
A shift from a reported net loss of 127.1 million USD in 2018 to a reported net income of 341.2 million USD in 2022 is observed. The most substantial increase occurred between 2019 and 2020, with reported net income rising from 101.1 million USD to 493.6 million USD.
Analysis of Mark-to-Market Adjustments
The variance between reported and adjusted net income remains immaterial relative to the overall scale of earnings. During 2018 and 2019, reported net income was slightly lower than adjusted net income. However, from 2020 to 2022, a positive divergence emerged where reported figures exceeded adjusted figures. This positive gap expanded from 200 thousand USD in 2020 to 2.3 million USD in 2022, indicating a favorable mark-to-market adjustment on available-for-sale securities.
Earnings Volatility
Earnings exhibited notable volatility throughout the period. After reaching a peak in 2020, reported net income decreased to 154.7 million USD in 2021 before rebounding to 341.2 million USD by the end of 2022.

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Adjusted Profitability Ratios: Mark to Market Available-for-sale Securities (Summary)

DexCom Inc., Profitability Ratios: Reported vs. Adjusted

DexCom Inc., adjusted profitability ratios

Microsoft Excel
Dec 31, 2022 Dec 31, 2021 Dec 31, 2020 Dec 31, 2019 Dec 31, 2018
Net Profit Margin
Reported net profit margin 11.73% 6.32% 25.62% 6.85% -12.32%
Adjusted net profit margin 11.65% 6.25% 25.61% 6.88% -12.31%
Return on Equity (ROE)
Reported ROE 16.01% 6.87% 27.02% 11.45% -19.16%
Adjusted ROE 15.90% 6.80% 27.01% 11.50% -19.15%
Return on Assets (ROA)
Reported ROA 6.33% 3.18% 11.50% 4.22% -6.63%
Adjusted ROA 6.29% 3.15% 11.50% 4.24% -6.63%

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).


A comprehensive evaluation of profitability ratios from 2018 to 2022 reveals a transition from initial operating losses to a volatile but positive profitability trajectory. The most significant surge in performance occurred in 2020, followed by a contraction in 2021 and a subsequent recovery in 2022.

Net Profit Margin
Reported net profit margins shifted from a deficit of -12.32% in 2018 to a peak of 25.62% in 2020. A sharp decline to 6.32% was observed in 2021, before recovering to 11.73% by the end of 2022. The adjusted net profit margin followed an almost identical trajectory, indicating that non-operating adjustments regarding securities had a minimal impact on overall margin performance.
Return on Equity (ROE)
The ROE exhibited substantial volatility, moving from -19.16% in 2018 to a high of 27.02% in 2020. This was followed by a decrease to 6.87% in 2021 and a recovery to 16.01% in 2022. The narrow variance between reported and adjusted ROE figures suggests that the return on equity is driven by core operational results rather than mark-to-market fluctuations of available-for-sale securities.
Return on Assets (ROA)
Asset utilization efficiency mirrored the broader profitability trends, ascending from -6.63% in 2018 to a maximum of 11.50% in 2020. The ratio subsequently fell to 3.18% in 2021 and rose to 6.33% in 2022. The consistency between reported and adjusted ROA figures further underscores the limited influence of investment valuation adjustments on asset productivity.

Analysis of the variance between reported and adjusted ratios indicates that the impact of mark-to-market available-for-sale securities is immaterial. Throughout the five-year period, the difference between reported and adjusted figures remained consistently low, typically within a few basis points. This confirms that the observed fluctuations in profitability are attributable to operational factors rather than the valuation of the investment portfolio.

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Adjusted Net Profit Margin

Microsoft Excel
Dec 31, 2022 Dec 31, 2021 Dec 31, 2020 Dec 31, 2019 Dec 31, 2018
As Reported
Selected Financial Data (US$ in thousands)
Net income (loss) 341,200 154,700 493,600 101,100 (127,100)
Revenue 2,909,800 2,448,500 1,926,700 1,476,000 1,031,600
Profitability Ratio
Net profit margin1 11.73% 6.32% 25.62% 6.85% -12.32%
Adjusted: Mark to Market Available-for-sale Securities
Selected Financial Data (US$ in thousands)
Adjusted net income (loss) 338,900 153,000 493,400 101,500 (127,000)
Revenue 2,909,800 2,448,500 1,926,700 1,476,000 1,031,600
Profitability Ratio
Adjusted net profit margin2 11.65% 6.25% 25.61% 6.88% -12.31%

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

2022 Calculations

1 Net profit margin = 100 × Net income (loss) ÷ Revenue
= 100 × 341,200 ÷ 2,909,800 = 11.73%

2 Adjusted net profit margin = 100 × Adjusted net income (loss) ÷ Revenue
= 100 × 338,900 ÷ 2,909,800 = 11.65%


The financial performance over the five-year period from 2018 to 2022 is characterized by a transition from net losses to profitability, followed by significant volatility in profit margins. While the company achieved a positive trajectory after 2018, the margins experienced a sharp peak in 2020 before contracting and partially recovering by 2022.

Profitability Transition
A pivot from negative to positive earnings occurred between December 31, 2018, and December 31, 2019. The adjusted net profit margin shifted from -12.31% to 6.88%, corresponding with an adjusted net income increase from a loss of US$127 million to a profit of US$101.5 million.
Peak Efficiency and Subsequent Contraction
A significant expansion in profitability was observed on December 31, 2020, where the adjusted net profit margin reached a period peak of 25.61%, with adjusted net income climbing to US$493.4 million. This peak was followed by a sharp correction on December 31, 2021, as the adjusted net profit margin fell to 6.25% and adjusted net income decreased to US$153 million.
Recovery Phase
An upward trend resumed by December 31, 2022, with the adjusted net profit margin recovering to 11.65%. This recovery is reflected in the adjusted net income, which rose to US$338.9 million, more than doubling the previous year's result.
Comparison of Reported and Adjusted Metrics
A close alignment is observed between reported and adjusted net profit margins throughout the analyzed period. The minimal variance between these two metrics suggests that non-recurring items or non-cash adjustments had a negligible impact on the overall profitability narrative, indicating that operational results are consistently reflected in both reported and adjusted figures.

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Adjusted Return on Equity (ROE)

Microsoft Excel
Dec 31, 2022 Dec 31, 2021 Dec 31, 2020 Dec 31, 2019 Dec 31, 2018
As Reported
Selected Financial Data (US$ in thousands)
Net income (loss) 341,200 154,700 493,600 101,100 (127,100)
Stockholders’ equity 2,131,800 2,251,500 1,826,500 882,600 663,300
Profitability Ratio
ROE1 16.01% 6.87% 27.02% 11.45% -19.16%
Adjusted: Mark to Market Available-for-sale Securities
Selected Financial Data (US$ in thousands)
Adjusted net income (loss) 338,900 153,000 493,400 101,500 (127,000)
Stockholders’ equity 2,131,800 2,251,500 1,826,500 882,600 663,300
Profitability Ratio
Adjusted ROE2 15.90% 6.80% 27.01% 11.50% -19.15%

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

2022 Calculations

1 ROE = 100 × Net income (loss) ÷ Stockholders’ equity
= 100 × 341,200 ÷ 2,131,800 = 16.01%

2 Adjusted ROE = 100 × Adjusted net income (loss) ÷ Stockholders’ equity
= 100 × 338,900 ÷ 2,131,800 = 15.90%


The financial trajectory from 2018 to 2022 reveals a period of significant volatility in profitability and capital efficiency. After an initial phase of losses, a recovery trend emerged, characterized by a peak in performance in 2020, a subsequent correction in 2021, and a partial rebound by the end of 2022.

Net Income Performance
Adjusted net income transitioned from a loss of US$ 127 million in 2018 to a peak of US$ 493.4 million in 2020. This growth was followed by a sharp decline to US$ 153 million in 2021, before recovering to US$ 338.9 million in 2022.
Adjusted Return on Equity (ROE) Analysis
The adjusted ROE mirrored the volatility of net income, moving from -19.15% in 2018 to a high of 27.01% in 2020. A significant contraction occurred in 2021, where the ratio fell to 6.80%, before ascending to 15.90% in 2022. This pattern indicates an inconsistent rate of return on shareholders' equity over the five-year span.
Comparative Analysis of Reported and Adjusted Metrics
A high degree of convergence is observed between reported and adjusted ROE throughout the entire period. The minimal variance between these two figures suggests that non-recurring items or accounting adjustments had a negligible impact on the overall return on equity profile.

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Adjusted Return on Assets (ROA)

Microsoft Excel
Dec 31, 2022 Dec 31, 2021 Dec 31, 2020 Dec 31, 2019 Dec 31, 2018
As Reported
Selected Financial Data (US$ in thousands)
Net income (loss) 341,200 154,700 493,600 101,100 (127,100)
Total assets 5,391,700 4,863,600 4,290,500 2,395,000 1,916,000
Profitability Ratio
ROA1 6.33% 3.18% 11.50% 4.22% -6.63%
Adjusted: Mark to Market Available-for-sale Securities
Selected Financial Data (US$ in thousands)
Adjusted net income (loss) 338,900 153,000 493,400 101,500 (127,000)
Total assets 5,391,700 4,863,600 4,290,500 2,395,000 1,916,000
Profitability Ratio
Adjusted ROA2 6.29% 3.15% 11.50% 4.24% -6.63%

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

2022 Calculations

1 ROA = 100 × Net income (loss) ÷ Total assets
= 100 × 341,200 ÷ 5,391,700 = 6.33%

2 Adjusted ROA = 100 × Adjusted net income (loss) ÷ Total assets
= 100 × 338,900 ÷ 5,391,700 = 6.29%


A significant transition in financial performance occurred between 2018 and 2022, characterized by a shift from initial losses to inconsistent but positive profitability. A notable peak in asset utilization efficiency was reached in 2020, followed by a sharp decline in 2021 and a subsequent recovery in 2022.

Adjusted Net Income Trends
The company shifted from an adjusted net loss of 127 million US dollars in 2018 to a peak adjusted net income of 493.4 million US dollars in 2020. A substantial contraction occurred in 2021, where income fell to 153 million US dollars, before rebounding to 338.9 million US dollars by the end of 2022.
Adjusted Return on Assets (ROA)
Asset efficiency mirrored the income trend, moving from a negative ROA of -6.63% in 2018 to a high of 11.50% in 2020. The ratio experienced a significant drop to 3.15% in 2021, indicating a period of reduced effectiveness in generating earnings from the asset base, but improved to 6.29% in 2022.
Comparison of Reported and Adjusted Metrics
A high degree of alignment is observed between reported and adjusted figures across all periods. The minimal variance between reported ROA and adjusted ROA suggests that non-recurring items or accounting adjustments have not significantly distorted the underlying operational efficiency of the company's assets.

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