Stock Analysis on Net

Steel Dynamics Inc. (NASDAQ:STLD)

This company has been moved to the archive! The financial data has not been updated since October 26, 2022.

DuPont Analysis: Disaggregation of ROE, ROA, and Net Profit Margin 
Quarterly Data

Microsoft Excel

Two-Component Disaggregation of ROE

Steel Dynamics Inc., decomposition of ROE (quarterly data)

Microsoft Excel
ROE = ROA × Financial Leverage
Sep 30, 2022 54.17% = 30.74% × 1.76
Jun 30, 2022 57.91% = 32.05% × 1.81
Mar 31, 2022 55.82% = 29.77% × 1.87
Dec 31, 2021 50.98% = 25.65% × 1.99
Sep 30, 2021 41.22% = 20.04% × 2.06
Jun 30, 2021 28.30% = 13.29% × 2.13
Mar 31, 2021 16.79% = 7.84% × 2.14
Dec 31, 2020 12.68% = 5.94% × 2.13
Sep 30, 2020 11.53% = 5.62% × 2.05
Jun 30, 2020 12.91% = 6.32% × 2.04
Mar 31, 2020 15.90% = 7.84% × 2.03
Dec 31, 2019 16.47% = 8.11% × 2.03
Sep 30, 2019 20.21% = 10.32% × 1.96
Jun 30, 2019 26.25% = 13.58% × 1.93
Mar 31, 2019 30.82% = 15.72% × 1.96
Dec 31, 2018 31.98% = 16.34% × 1.96
Sep 30, 2018 32.06% = 16.58% × 1.93
Jun 30, 2018 27.97% = 13.96% × 2.00
Mar 31, 2018 24.19% = 12.04% × 2.01
Dec 31, 2017 24.25% = 11.85% × 2.05
Sep 30, 2017 = × 2.24
Jun 30, 2017 = × 2.16
Mar 31, 2017 = × 2.21

Based on: 10-Q (reporting date: 2022-09-30), 10-Q (reporting date: 2022-06-30), 10-Q (reporting date: 2022-03-31), 10-K (reporting date: 2021-12-31), 10-Q (reporting date: 2021-09-30), 10-Q (reporting date: 2021-06-30), 10-Q (reporting date: 2021-03-31), 10-K (reporting date: 2020-12-31), 10-Q (reporting date: 2020-09-30), 10-Q (reporting date: 2020-06-30), 10-Q (reporting date: 2020-03-31), 10-K (reporting date: 2019-12-31), 10-Q (reporting date: 2019-09-30), 10-Q (reporting date: 2019-06-30), 10-Q (reporting date: 2019-03-31), 10-K (reporting date: 2018-12-31), 10-Q (reporting date: 2018-09-30), 10-Q (reporting date: 2018-06-30), 10-Q (reporting date: 2018-03-31), 10-K (reporting date: 2017-12-31), 10-Q (reporting date: 2017-09-30), 10-Q (reporting date: 2017-06-30), 10-Q (reporting date: 2017-03-31).


Return on Assets (ROA) Trend
The return on assets demonstrates a fluctuating but generally upward trend over the analyzed periods. Starting with missing data in early 2017, the ROA increased steadily from 11.85% in March 2017 to a peak of 16.58% by December 2017. This was followed by a gradual decline through December 2020, reaching its lowest point at 5.62% in March 2020. From that low, there was a marked recovery and significant growth, with ROA rising sharply from 7.84% in June 2020 to a high of 32.05% in December 2021, before experiencing a slight decline to 30.74% by September 2022. This pattern indicates resilience and improved asset profitability in the later periods after a mid-term drop.
Financial Leverage Pattern
Financial leverage ratios show a slow but steady decrease over time, beginning at 2.21 in March 2017 and declining fairly consistently to 1.76 in September 2022. This downward trend suggests a reduction in reliance on debt financing, indicating a potential shift to a more conservative capital structure or improved equity base. The leverage remains relatively stable year-over-year but systematically trends downward without significant fluctuations.
Return on Equity (ROE) Dynamics
Return on equity displays a substantial increase across the periods covered. Beginning with absent data in early 2017, ROE was recorded at 24.25% in March 2017, followed by growth to just over 32% by December 2017. It then declined gradually to 11.53% by December 2020, mirroring the decline observed in ROA during that time. Afterward, ROE rebounded sharply, rising significantly to 57.91% by September 2021, peaking at nearly 58%, and moderately declining to 54.17% by September 2022. The increase in ROE despite a decreasing financial leverage ratio suggests improved operational efficiency, profitability, or other positive influences on equity returns.
Overall Observations and Insights
The financial metrics collectively illustrate a period of volatility followed by strong recovery and growth. The decline in ROA and ROE leading into 2020 likely reflects challenging operating conditions. However, the subsequent robust recovery in both returns, coupled with decreasing financial leverage, indicates improving profitability with a more conservative financing approach. The pattern suggests enhanced asset and equity utilization and a healthy financial position in the latter periods, especially through 2021 and mid-2022.

Three-Component Disaggregation of ROE

Steel Dynamics Inc., decomposition of ROE (quarterly data)

Microsoft Excel
ROE = Net Profit Margin × Asset Turnover × Financial Leverage
Sep 30, 2022 54.17% = 18.99% × 1.62 × 1.76
Jun 30, 2022 57.91% = 19.81% × 1.62 × 1.81
Mar 31, 2022 55.82% = 19.02% × 1.57 × 1.87
Dec 31, 2021 50.98% = 17.46% × 1.47 × 1.99
Sep 30, 2021 41.22% = 14.72% × 1.36 × 2.06
Jun 30, 2021 28.30% = 10.98% × 1.21 × 2.13
Mar 31, 2021 16.79% = 7.51% × 1.04 × 2.14
Dec 31, 2020 12.68% = 5.74% × 1.04 × 2.13
Sep 30, 2020 11.53% = 5.18% × 1.09 × 2.05
Jun 30, 2020 12.91% = 5.61% × 1.13 × 2.04
Mar 31, 2020 15.90% = 6.40% × 1.23 × 2.03
Dec 31, 2019 16.47% = 6.41% × 1.26 × 2.03
Sep 30, 2019 20.21% = 7.44% × 1.39 × 1.96
Jun 30, 2019 26.25% = 9.11% × 1.49 × 1.93
Mar 31, 2019 30.82% = 10.26% × 1.53 × 1.96
Dec 31, 2018 31.98% = 10.64% × 1.53 × 1.96
Sep 30, 2018 32.06% = 11.49% × 1.44 × 1.93
Jun 30, 2018 27.97% = 10.01% × 1.40 × 2.00
Mar 31, 2018 24.19% = 8.59% × 1.40 × 2.01
Dec 31, 2017 24.25% = 8.52% × 1.39 × 2.05
Sep 30, 2017 = × × 2.24
Jun 30, 2017 = × × 2.16
Mar 31, 2017 = × × 2.21

Based on: 10-Q (reporting date: 2022-09-30), 10-Q (reporting date: 2022-06-30), 10-Q (reporting date: 2022-03-31), 10-K (reporting date: 2021-12-31), 10-Q (reporting date: 2021-09-30), 10-Q (reporting date: 2021-06-30), 10-Q (reporting date: 2021-03-31), 10-K (reporting date: 2020-12-31), 10-Q (reporting date: 2020-09-30), 10-Q (reporting date: 2020-06-30), 10-Q (reporting date: 2020-03-31), 10-K (reporting date: 2019-12-31), 10-Q (reporting date: 2019-09-30), 10-Q (reporting date: 2019-06-30), 10-Q (reporting date: 2019-03-31), 10-K (reporting date: 2018-12-31), 10-Q (reporting date: 2018-09-30), 10-Q (reporting date: 2018-06-30), 10-Q (reporting date: 2018-03-31), 10-K (reporting date: 2017-12-31), 10-Q (reporting date: 2017-09-30), 10-Q (reporting date: 2017-06-30), 10-Q (reporting date: 2017-03-31).


Net Profit Margin
The net profit margin exhibits a generally upward trend from March 2017 through September 2022, starting at 8.52% and reaching a peak of 19.81% at December 2021, before slightly declining to 18.99% in the last recorded quarter. There is an initial steady increase in profit margins through 2017 and 2018, followed by a more gradual rise with some minor fluctuations. This upward trajectory indicates improved profitability relative to revenue over the period analyzed.
Asset Turnover
Asset turnover ratios show variability but generally increase over time. Beginning at 1.39 in March 2017, the ratio peaks intermittently around 1.53 in early to mid-2019 before dropping back to the low 1.0s through mid-2020. From late 2020 onward, there is a noticeable recovery and strong increase, culminating at 1.62 in the last two quarters. This pattern suggests changes in asset utilization efficiency, with periods of declining turnover potentially linked to asset base expansion or lower sales, followed by improved efficiency in later periods.
Financial Leverage
Financial leverage ratios show a gradual decline over the timeframe, moving from 2.21 in the earliest available quarter down to 1.76 by the latest quarter. This decreasing trend implies a reduction in the use of debt relative to equity, signifying a potentially more conservative capital structure or deleveraging efforts. The leverage remains relatively stable between 1.9 and 2.1 for much of the mid-period before declining steadily after 2020.
Return on Equity (ROE)
ROE exhibits a strong upward trend, commensurate with improvements in profitability and asset efficiency. Starting at 24.25% in March 2017, it fluctuates around the mid-20% to low-30% range through 2018 and 2019, but then declines temporarily in 2020. Subsequently, there is a sharp increase from 2021 onwards, reaching an exceptional 57.91% in September 2022. This substantial increase in ROE indicates markedly enhanced shareholder value generation, driven by improved profit margins, asset turnover, and moderated financial leverage.

Five-Component Disaggregation of ROE

Steel Dynamics Inc., decomposition of ROE (quarterly data)

Microsoft Excel
ROE = Tax Burden × Interest Burden × EBIT Margin × Asset Turnover × Financial Leverage
Sep 30, 2022 54.17% = 0.76 × 0.99 × 25.21% × 1.62 × 1.76
Jun 30, 2022 57.91% = 0.77 × 0.99 × 26.19% × 1.62 × 1.81
Mar 31, 2022 55.82% = 0.77 × 0.99 × 25.10% × 1.57 × 1.87
Dec 31, 2021 50.98% = 0.77 × 0.99 × 23.00% × 1.47 × 1.99
Sep 30, 2021 41.22% = 0.77 × 0.98 × 19.42% × 1.36 × 2.06
Jun 30, 2021 28.30% = 0.78 × 0.96 × 14.62% × 1.21 × 2.13
Mar 31, 2021 16.79% = 0.79 × 0.92 × 10.25% × 1.04 × 2.14
Dec 31, 2020 12.68% = 0.80 × 0.88 × 8.13% × 1.04 × 2.13
Sep 30, 2020 11.53% = 0.78 × 0.85 × 7.79% × 1.09 × 2.05
Jun 30, 2020 12.91% = 0.77 × 0.85 × 8.50% × 1.13 × 2.04
Mar 31, 2020 15.90% = 0.77 × 0.87 × 9.50% × 1.23 × 2.03
Dec 31, 2019 16.47% = 0.77 × 0.87 × 9.51% × 1.26 × 2.03
Sep 30, 2019 20.21% = 0.77 × 0.89 × 10.79% × 1.39 × 1.96
Jun 30, 2019 26.25% = 0.78 × 0.92 × 12.78% × 1.49 × 1.93
Mar 31, 2019 30.82% = 0.78 × 0.93 × 14.26% × 1.53 × 1.96
Dec 31, 2018 31.98% = 0.78 × 0.93 × 14.79% × 1.53 × 1.96
Sep 30, 2018 32.06% = 0.90 × 0.92 × 13.96% × 1.44 × 1.93
Jun 30, 2018 27.97% = 0.89 × 0.90 × 12.44% × 1.40 × 2.00
Mar 31, 2018 24.19% = 0.90 × 0.88 × 10.91% × 1.40 × 2.01
Dec 31, 2017 24.25% = 0.86 × 0.88 × 11.29% × 1.39 × 2.05
Sep 30, 2017 = × × × × 2.24
Jun 30, 2017 = × × × × 2.16
Mar 31, 2017 = × × × × 2.21

Based on: 10-Q (reporting date: 2022-09-30), 10-Q (reporting date: 2022-06-30), 10-Q (reporting date: 2022-03-31), 10-K (reporting date: 2021-12-31), 10-Q (reporting date: 2021-09-30), 10-Q (reporting date: 2021-06-30), 10-Q (reporting date: 2021-03-31), 10-K (reporting date: 2020-12-31), 10-Q (reporting date: 2020-09-30), 10-Q (reporting date: 2020-06-30), 10-Q (reporting date: 2020-03-31), 10-K (reporting date: 2019-12-31), 10-Q (reporting date: 2019-09-30), 10-Q (reporting date: 2019-06-30), 10-Q (reporting date: 2019-03-31), 10-K (reporting date: 2018-12-31), 10-Q (reporting date: 2018-09-30), 10-Q (reporting date: 2018-06-30), 10-Q (reporting date: 2018-03-31), 10-K (reporting date: 2017-12-31), 10-Q (reporting date: 2017-09-30), 10-Q (reporting date: 2017-06-30), 10-Q (reporting date: 2017-03-31).


Tax Burden
The tax burden ratio shows relative stability across the periods between Q2 2017 and Q3 2022, maintaining a level mostly in the range of 0.76 to 0.9. It starts at higher values near 0.9 in 2017-2018 and gradually decreases to roughly 0.76-0.77 in the most recent quarters, indicating a consistent effective tax rate over time with minor fluctuations.
Interest Burden
The interest burden ratio exhibits a generally upward trend over the analyzed periods. Beginning around 0.88-0.92 in 2017-2018, it steadily increases to reach approximately 0.99 by late 2021 through 2022. This suggests decreasing interest expenses relative to earnings before interest and taxes, reflecting improved interest cost management or lower leverage impact on interest expenses.
EBIT Margin
The EBIT margin demonstrates significant variation, initially declining from 14.79% in early 2019 down to approximately 7.79% by the end of 2020. Subsequently, it rebounds strongly, rising to a peak of around 26.19% in late 2021, before stabilizing slightly lower at 25.21% in the most recent quarter. This pattern suggests a period of margin contraction followed by robust profitability improvement, possibly due to operational efficiency or favorable market conditions.
Asset Turnover
The asset turnover ratio declines from a high of approximately 1.53 in early 2019 to about 1.04 by the end of 2020, indicating a reduction in revenue generated per unit of asset. However, from 2021 onwards, the ratio improves steadily, reaching around 1.62 by Q3 2022. This reflects enhanced asset utilization efficiency in the latter period.
Financial Leverage
Financial leverage decreases consistently from approximately 2.21 in early 2017 to 1.76 by Q3 2022. This downward trend indicates a gradual reduction in the use of debt relative to equity, suggesting a deleveraging strategy or increase in equity base over the years.
Return on Equity (ROE)
The return on equity shows notable variability throughout the periods. It declines from roughly 32% in late 2017 to a low near 11.53% in late 2020. Subsequently, it experiences a substantial surge, peaking at nearly 57.91% in late 2021 before moderately retreating to about 54.17% thereafter. The ROE movements mirror changes in profitability and leverage, reflecting a period of lower returns followed by exceptional shareholder value creation likely driven by improved operational performance and capital structure.

Two-Component Disaggregation of ROA

Steel Dynamics Inc., decomposition of ROA (quarterly data)

Microsoft Excel
ROA = Net Profit Margin × Asset Turnover
Sep 30, 2022 30.74% = 18.99% × 1.62
Jun 30, 2022 32.05% = 19.81% × 1.62
Mar 31, 2022 29.77% = 19.02% × 1.57
Dec 31, 2021 25.65% = 17.46% × 1.47
Sep 30, 2021 20.04% = 14.72% × 1.36
Jun 30, 2021 13.29% = 10.98% × 1.21
Mar 31, 2021 7.84% = 7.51% × 1.04
Dec 31, 2020 5.94% = 5.74% × 1.04
Sep 30, 2020 5.62% = 5.18% × 1.09
Jun 30, 2020 6.32% = 5.61% × 1.13
Mar 31, 2020 7.84% = 6.40% × 1.23
Dec 31, 2019 8.11% = 6.41% × 1.26
Sep 30, 2019 10.32% = 7.44% × 1.39
Jun 30, 2019 13.58% = 9.11% × 1.49
Mar 31, 2019 15.72% = 10.26% × 1.53
Dec 31, 2018 16.34% = 10.64% × 1.53
Sep 30, 2018 16.58% = 11.49% × 1.44
Jun 30, 2018 13.96% = 10.01% × 1.40
Mar 31, 2018 12.04% = 8.59% × 1.40
Dec 31, 2017 11.85% = 8.52% × 1.39
Sep 30, 2017 = ×
Jun 30, 2017 = ×
Mar 31, 2017 = ×

Based on: 10-Q (reporting date: 2022-09-30), 10-Q (reporting date: 2022-06-30), 10-Q (reporting date: 2022-03-31), 10-K (reporting date: 2021-12-31), 10-Q (reporting date: 2021-09-30), 10-Q (reporting date: 2021-06-30), 10-Q (reporting date: 2021-03-31), 10-K (reporting date: 2020-12-31), 10-Q (reporting date: 2020-09-30), 10-Q (reporting date: 2020-06-30), 10-Q (reporting date: 2020-03-31), 10-K (reporting date: 2019-12-31), 10-Q (reporting date: 2019-09-30), 10-Q (reporting date: 2019-06-30), 10-Q (reporting date: 2019-03-31), 10-K (reporting date: 2018-12-31), 10-Q (reporting date: 2018-09-30), 10-Q (reporting date: 2018-06-30), 10-Q (reporting date: 2018-03-31), 10-K (reporting date: 2017-12-31), 10-Q (reporting date: 2017-09-30), 10-Q (reporting date: 2017-06-30), 10-Q (reporting date: 2017-03-31).


Net Profit Margin
The net profit margin shows an overall increasing trend from 8.52% in March 2017 to a peak of 19.81% in December 2021. Initially, it rose gradually from 8.52% to 11.49% by December 2017, followed by a period of decline through 2020, stabilizing around 5.18%-7.51%. From March 2021 onward, the margin increased sharply, reaching almost 20% by late 2021 and slightly decreasing but remaining high at 18.99% in September 2022.
Asset Turnover
Asset turnover began at 1.39 in March 2017 and experienced modest growth reaching 1.53 by March 2019. This was followed by a decline to 1.04 by December 2020, indicating less efficient use of assets during this period. However, from March 2021, asset turnover improved significantly, rising to 1.62 by September 2022, reflecting enhanced asset utilization and operational efficiency in recent quarters.
Return on Assets (ROA)
ROA followed a similar pattern to net profit margin, starting at 11.85% in March 2017 and climbing steadily to 16.58% by December 2017. After reaching a peak of 16.34% in March 2019, it declined over the next year, bottoming near 5.62% in December 2020. From early 2021, ROA increased sharply, reaching a peak of 32.05% in June 2022, before slightly decreasing to 30.74% in September 2022. This suggests significant improvement in asset profitability during the latest periods.
Overall Trends and Insights
The financial data indicates a clear cyclical pattern with a phase of strong profit margins and asset returns up to early 2019, followed by a downturn throughout 2020. The subsequent recovery beginning in 2021 is marked by substantial improvements in profitability, efficiency, and asset returns. The simultaneous increase in net profit margin, asset turnover, and ROA from 2021 onward reflects a period of enhanced operational performance and effective asset management. Despite minor declines towards the latest periods, profitability and efficiency ratios remain well above earlier years, suggesting sustained financial strength.

Four-Component Disaggregation of ROA

Steel Dynamics Inc., decomposition of ROA (quarterly data)

Microsoft Excel
ROA = Tax Burden × Interest Burden × EBIT Margin × Asset Turnover
Sep 30, 2022 30.74% = 0.76 × 0.99 × 25.21% × 1.62
Jun 30, 2022 32.05% = 0.77 × 0.99 × 26.19% × 1.62
Mar 31, 2022 29.77% = 0.77 × 0.99 × 25.10% × 1.57
Dec 31, 2021 25.65% = 0.77 × 0.99 × 23.00% × 1.47
Sep 30, 2021 20.04% = 0.77 × 0.98 × 19.42% × 1.36
Jun 30, 2021 13.29% = 0.78 × 0.96 × 14.62% × 1.21
Mar 31, 2021 7.84% = 0.79 × 0.92 × 10.25% × 1.04
Dec 31, 2020 5.94% = 0.80 × 0.88 × 8.13% × 1.04
Sep 30, 2020 5.62% = 0.78 × 0.85 × 7.79% × 1.09
Jun 30, 2020 6.32% = 0.77 × 0.85 × 8.50% × 1.13
Mar 31, 2020 7.84% = 0.77 × 0.87 × 9.50% × 1.23
Dec 31, 2019 8.11% = 0.77 × 0.87 × 9.51% × 1.26
Sep 30, 2019 10.32% = 0.77 × 0.89 × 10.79% × 1.39
Jun 30, 2019 13.58% = 0.78 × 0.92 × 12.78% × 1.49
Mar 31, 2019 15.72% = 0.78 × 0.93 × 14.26% × 1.53
Dec 31, 2018 16.34% = 0.78 × 0.93 × 14.79% × 1.53
Sep 30, 2018 16.58% = 0.90 × 0.92 × 13.96% × 1.44
Jun 30, 2018 13.96% = 0.89 × 0.90 × 12.44% × 1.40
Mar 31, 2018 12.04% = 0.90 × 0.88 × 10.91% × 1.40
Dec 31, 2017 11.85% = 0.86 × 0.88 × 11.29% × 1.39
Sep 30, 2017 = × × ×
Jun 30, 2017 = × × ×
Mar 31, 2017 = × × ×

Based on: 10-Q (reporting date: 2022-09-30), 10-Q (reporting date: 2022-06-30), 10-Q (reporting date: 2022-03-31), 10-K (reporting date: 2021-12-31), 10-Q (reporting date: 2021-09-30), 10-Q (reporting date: 2021-06-30), 10-Q (reporting date: 2021-03-31), 10-K (reporting date: 2020-12-31), 10-Q (reporting date: 2020-09-30), 10-Q (reporting date: 2020-06-30), 10-Q (reporting date: 2020-03-31), 10-K (reporting date: 2019-12-31), 10-Q (reporting date: 2019-09-30), 10-Q (reporting date: 2019-06-30), 10-Q (reporting date: 2019-03-31), 10-K (reporting date: 2018-12-31), 10-Q (reporting date: 2018-09-30), 10-Q (reporting date: 2018-06-30), 10-Q (reporting date: 2018-03-31), 10-K (reporting date: 2017-12-31), 10-Q (reporting date: 2017-09-30), 10-Q (reporting date: 2017-06-30), 10-Q (reporting date: 2017-03-31).


The financial data reveals several notable trends across the analyzed quarterly periods.

Tax Burden
The tax burden ratio is available starting from the first quarter of 2018 and remains relatively stable throughout, fluctuating narrowly between 0.76 and 0.9. This consistency suggests a steady effective tax rate over the periods, with a subtle declining tendency from around 0.9 in early 2018 to approximately 0.76 in late 2022.
Interest Burden
The interest burden ratio begins at around 0.88 in early 2018 and exhibits a gradual improvement over time, reaching near 0.99 by the third quarter of 2022. This upward trend indicates a reduction in interest expense relative to earnings before interest and taxes (EBIT), which may reflect lower interest obligations or improved operating earnings coverage.
EBIT Margin
The EBIT margin shows a dynamic and largely positive trajectory. Initially, it hovers around 11%-14% in 2017 and 2018, dips to around 7.79%-9.5% during 2019 and 2020, but then significantly climbs from 8.13% in early 2021 to above 25% in 2022, reaching a peak of about 26.19%. This substantial improvement indicates enhanced operating profitability and greater efficiency in generating earnings from revenue.
Asset Turnover
Asset turnover starts strong around 1.39-1.44 in 2017-2018, indicating efficient asset use to generate sales. However, the ratio declines steadily to near 1.04 in late 2020, implying a reduced efficiency in asset utilization during this period. Following this, there is a recovery trend beginning in early 2021, with the ratio rising to about 1.62 by late 2022, signaling a return to improved asset productivity.
Return on Assets (ROA)
The ROA demonstrates a pattern closely linked to changes in EBIT margin and asset turnover. It peaks at approximately 16.58% at the end of 2017, declines steadily through 2019 and 2020 to around 5.62%, reflecting lowered profitability and asset utilization, and then recovers markedly from 2021 onward. By late 2022, ROA attains levels exceeding 30%, underscoring a strong overall return on investment in assets.

Collectively, these trends suggest that while the company experienced a phase of declining profitability and asset efficiency around 2019 to 2020, a robust recovery followed. This resurgence is highlighted by substantial increases in EBIT margin and ROA, accompanied by improved asset turnover and reduced interest burden. The relatively stable tax burden supports the view that tax considerations remained consistent and did not impede profitability trends. Overall, the data points to effective operational improvements and enhanced financial health in the most recent periods under review.


Disaggregation of Net Profit Margin

Steel Dynamics Inc., decomposition of net profit margin ratio (quarterly data)

Microsoft Excel
Net Profit Margin = Tax Burden × Interest Burden × EBIT Margin
Sep 30, 2022 18.99% = 0.76 × 0.99 × 25.21%
Jun 30, 2022 19.81% = 0.77 × 0.99 × 26.19%
Mar 31, 2022 19.02% = 0.77 × 0.99 × 25.10%
Dec 31, 2021 17.46% = 0.77 × 0.99 × 23.00%
Sep 30, 2021 14.72% = 0.77 × 0.98 × 19.42%
Jun 30, 2021 10.98% = 0.78 × 0.96 × 14.62%
Mar 31, 2021 7.51% = 0.79 × 0.92 × 10.25%
Dec 31, 2020 5.74% = 0.80 × 0.88 × 8.13%
Sep 30, 2020 5.18% = 0.78 × 0.85 × 7.79%
Jun 30, 2020 5.61% = 0.77 × 0.85 × 8.50%
Mar 31, 2020 6.40% = 0.77 × 0.87 × 9.50%
Dec 31, 2019 6.41% = 0.77 × 0.87 × 9.51%
Sep 30, 2019 7.44% = 0.77 × 0.89 × 10.79%
Jun 30, 2019 9.11% = 0.78 × 0.92 × 12.78%
Mar 31, 2019 10.26% = 0.78 × 0.93 × 14.26%
Dec 31, 2018 10.64% = 0.78 × 0.93 × 14.79%
Sep 30, 2018 11.49% = 0.90 × 0.92 × 13.96%
Jun 30, 2018 10.01% = 0.89 × 0.90 × 12.44%
Mar 31, 2018 8.59% = 0.90 × 0.88 × 10.91%
Dec 31, 2017 8.52% = 0.86 × 0.88 × 11.29%
Sep 30, 2017 = × ×
Jun 30, 2017 = × ×
Mar 31, 2017 = × ×

Based on: 10-Q (reporting date: 2022-09-30), 10-Q (reporting date: 2022-06-30), 10-Q (reporting date: 2022-03-31), 10-K (reporting date: 2021-12-31), 10-Q (reporting date: 2021-09-30), 10-Q (reporting date: 2021-06-30), 10-Q (reporting date: 2021-03-31), 10-K (reporting date: 2020-12-31), 10-Q (reporting date: 2020-09-30), 10-Q (reporting date: 2020-06-30), 10-Q (reporting date: 2020-03-31), 10-K (reporting date: 2019-12-31), 10-Q (reporting date: 2019-09-30), 10-Q (reporting date: 2019-06-30), 10-Q (reporting date: 2019-03-31), 10-K (reporting date: 2018-12-31), 10-Q (reporting date: 2018-09-30), 10-Q (reporting date: 2018-06-30), 10-Q (reporting date: 2018-03-31), 10-K (reporting date: 2017-12-31), 10-Q (reporting date: 2017-09-30), 10-Q (reporting date: 2017-06-30), 10-Q (reporting date: 2017-03-31).


The analysis of the financial ratios over the examined periods reveals distinct trends in profitability and cost management.

Tax Burden
The tax burden ratio remains relatively stable from the first recorded value in March 2018 through September 2022, fluctuating narrowly around the 0.76 to 0.9 range. Initially, the ratio is about 0.86 to 0.9 until late 2018, reflecting a consistent tax expense relative to pre-tax earnings. From early 2019 onward, the ratio decreases slightly and stabilizes near 0.77, indicating a marginally lower proportion of taxes deducted from earnings during later periods.
Interest Burden
The interest burden shows a gradual improving trend over time. It starts around 0.88 in early 2018 and gradually increases to about 0.99 by the middle of 2022, suggesting a reduction in interest expense relative to earnings before interest and taxes. This steady increase signifies better management or reduction of interest costs, positively impacting profitability.
EBIT Margin
The EBIT margin exhibits a noticeable growth pattern across the periods. Initially around 11.29% in March 2018, it hovers between roughly 10% to 14% until the end of 2019. Early 2020 shows a decline to below 9%, coinciding with the initial phases of the global economic challenges, presumably impacting operating profitability. However, after the mid-2020 low, there is a strong upward trend, peaking above 26% by late 2021, and slightly tapering but maintaining a high level around 25% by late 2022. This indicates a considerable improvement in operating efficiency and earnings generation from core operations in the recent periods.
Net Profit Margin
The net profit margin follows a pattern broadly similar to the EBIT margin but with slightly lower absolute values, as expected. It starts from approximately 8.5% in early 2018, remains steady around 6-10% through 2019, and dips again during early to mid-2020, reaching lows near 5%. Subsequently, it demonstrates robust growth, achieving a peak near 19.8% in late 2021 before a slight decline to approximately 19% towards the third quarter of 2022. This reflects a substantial increase in overall profitability after initial economic disruptions, supported by improved cost control and lower finance charges.

Overall, the data indicates a period of stable but moderate profitability until early 2020, followed by a marked downturn possibly linked to external economic pressures. Recovery is strong and sustained in subsequent periods, characterized by enhanced operating margins, reduced interest expenses relative to earnings, and stable tax burdens, collectively driving improved net profitability.