Amgen Inc. (NASDAQ:AMGN)

The period under review demonstrates significant fluctuations in the relationship between Return on Assets, Financial Leverage, and Return on Equity. A substantial increase in Financial Leverage initially drove a dramatic rise in Return on Equity, followed by a period of decline, and a subsequent partial recovery.

Return on Assets (ROA)

Return on Assets exhibited an initial increase from 9.63% in 2021 to 10.06% in 2022. However, a marked downward trend followed, with ROA decreasing to 6.91% in 2023 and further to 4.45% in 2024. A recovery is observed in 2025, with ROA rising to 8.51%.

Financial Leverage

Financial Leverage experienced a considerable surge from 9.13 in 2021 to 17.79 in 2022. While remaining elevated, it decreased to 15.59 in 2023 and 15.63 in 2024 before declining more substantially to 10.46 in 2025. This suggests a shift in capital structure management during the period.

Return on Equity (ROE)

Return on Equity mirrored the changes in Financial Leverage, increasing dramatically from 87.96% in 2021 to 178.97% in 2022. A significant decline then occurred, with ROE falling to 107.78% in 2023 and 69.59% in 2024. A partial recovery to 89.06% is noted in 2025, though it remains below the 2021 level. The strong correlation between ROE and Financial Leverage indicates that changes in debt levels were a primary driver of ROE fluctuations.

The initial increase in ROE was largely attributable to the increased use of financial leverage, capitalizing on the existing Return on Assets. However, as ROA declined, the benefits of high leverage diminished, resulting in a substantial decrease in ROE. The 2025 figures suggest a potential stabilization as both ROA and Financial Leverage show signs of adjustment.

The period under review demonstrates significant fluctuations in the components contributing to Return on Equity (ROE). A notable divergence in performance is observed across the five years, with substantial shifts in profitability, efficiency, and financial leverage.

Net Profit Margin

The Net Profit Margin exhibited an initial increase from 24.25% in 2021 to 26.42% in 2022. However, this was followed by a decline to 24.96% in 2023, a sharp decrease to 12.77% in 2024, and a partial recovery to 21.94% in 2025. This volatility suggests potential changes in cost structures, pricing strategies, or product mix impacting profitability.

Asset Turnover

Asset Turnover decreased consistently from 0.40 in 2021 to 0.28 in 2023, indicating a declining ability to generate sales from its asset base. A modest recovery to 0.35 in 2024 was observed, followed by a further increase to 0.39 in 2025. This suggests some improvement in operational efficiency towards the end of the period, but overall remains below the level seen in 2021.

Financial Leverage

Financial Leverage increased substantially from 9.13 in 2021 to 17.79 in 2022, indicating a greater reliance on debt financing. It remained high at 15.59 and 15.63 in 2023 and 2024 respectively, before decreasing significantly to 10.46 in 2025. This suggests a period of increased financial risk followed by a deleveraging strategy.

Return on Equity (ROE)

ROE mirrored the fluctuations in its component ratios. It peaked at 178.97% in 2022, driven by increases in both Net Profit Margin and Financial Leverage. A substantial decline to 69.59% in 2024 was observed, coinciding with the sharp drop in Net Profit Margin. A partial recovery to 89.06% in 2025 occurred, reflecting improvements in both profitability and asset turnover, alongside a decrease in financial leverage. The high ROE in 2022, while positive, should be examined in conjunction with the elevated Financial Leverage to assess sustainability.

The interplay between these ratios indicates that changes in ROE are heavily influenced by shifts in profitability and financial leverage. While asset turnover plays a role, its impact appears less pronounced than the other two components during this period. The significant volatility observed warrants further investigation into the underlying drivers of these changes.

The five-component DuPont analysis reveals significant fluctuations in the drivers of Return on Equity (ROE) over the observed period. While ROE demonstrates considerable volatility, a detailed examination of its components provides insight into these shifts.

Tax Burden

The Tax Burden remained relatively stable, fluctuating between 0.86 and 0.89 throughout the period. This indicates a consistent effective tax rate with minimal impact on overall profitability.

Interest Burden

The Interest Burden exhibited a notable decrease from 0.85 in 2021 to 0.73 in 2023, followed by a further substantial decline to 0.59 in 2024. However, it increased to 0.77 in 2025. This suggests improved management of interest-bearing liabilities, contributing positively to profitability in 2023 and 2024, but a potential reversal in 2025.

EBIT Margin

The EBIT Margin experienced a strong upward trend from 32.51% in 2021 to 39.87% in 2023, indicating enhanced operational efficiency and profitability. A significant decrease to 24.24% in 2024 was observed, followed by a recovery to 33.38% in 2025. This volatility suggests sensitivity to external factors or changes in cost structure.

Asset Turnover

Asset Turnover demonstrated a declining trend from 0.40 in 2021 to 0.28 in 2023, indicating decreasing efficiency in utilizing assets to generate revenue. A modest recovery to 0.35 in 2024 and further to 0.39 in 2025 was noted, suggesting some improvement in asset utilization, but remaining below the initial level.

Financial Leverage

Financial Leverage increased substantially from 9.13 in 2021 to 17.79 in 2022, indicating a greater reliance on debt financing. It remained elevated at 15.59 and 15.63 in 2023 and 2024, before decreasing to 10.46 in 2025. This suggests a period of increased financial risk followed by a reduction in leverage.

The substantial increase in ROE from 2021 to 2022 was primarily driven by a significant rise in Financial Leverage, coupled with an improved EBIT Margin. The subsequent decline in ROE in 2023 and 2024 was attributable to a decrease in Asset Turnover and a substantial drop in EBIT Margin, despite a continued high level of Financial Leverage. The partial recovery in ROE in 2025 appears linked to improvements in both EBIT Margin and Asset Turnover, alongside a reduction in Financial Leverage. The interplay between these components highlights the complex dynamics influencing overall profitability and return to shareholders.

The period under review demonstrates fluctuating performance in profitability and efficiency. Return on Assets (ROA) experienced initial growth followed by a significant decline and subsequent partial recovery. This movement is attributable to changes in both Net Profit Margin and Asset Turnover.

Net Profit Margin

The Net Profit Margin exhibited an increasing trend from 2021 to 2022, rising from 24.25% to 26.42%. A slight decrease was observed in 2023, with the margin settling at 24.96%. A substantial decline occurred in 2024, falling to 12.77%, before recovering to 21.94% in 2025. This indicates volatility in the company’s ability to generate profit from each dollar of sales.

Asset Turnover

Asset Turnover decreased from 0.40 in 2021 to 0.38 in 2022, suggesting a slight reduction in the efficiency of asset utilization. A more pronounced decrease was noted in 2023, with the ratio falling to 0.28. A modest improvement occurred in 2024, reaching 0.35, and continued into 2025, increasing to 0.39. This suggests a fluctuating ability to generate sales from its asset base.

Return on Assets (ROA)

ROA mirrored the combined effect of the two components. Initial growth from 9.63% in 2021 to 10.06% in 2022 was driven by increases in both Net Profit Margin and a relatively stable Asset Turnover. The significant drop in ROA to 6.91% in 2023 was primarily due to the decline in Asset Turnover, despite a relatively stable Net Profit Margin. The sharp decrease in ROA to 4.45% in 2024 was a result of both a substantial decline in Net Profit Margin and a moderate decrease in Asset Turnover. The partial recovery to 8.51% in 2025 was supported by improvements in both Net Profit Margin and Asset Turnover, though ROA did not return to its earlier levels.

The interplay between Net Profit Margin and Asset Turnover significantly impacted overall ROA. The substantial decline in ROA in 2024 highlights the sensitivity of overall profitability to simultaneous adverse movements in both margin and turnover efficiency. The recovery in 2025 suggests a positive, but incomplete, correction of these factors.

The period under review demonstrates fluctuating performance across key financial metrics. Return on Assets (ROA) experienced initial growth followed by a significant decline and subsequent partial recovery. A four-component DuPont analysis reveals the drivers behind these changes, specifically focusing on the interplay between profitability, efficiency, and financial leverage.

Profitability (EBIT Margin)

The EBIT Margin exhibited an increasing trend from 2021 to 2023, rising from 32.51% to 39.87%. However, a substantial decrease was observed in 2024, falling to 24.24%, before recovering to 33.38% in 2025. This volatility significantly impacts overall ROA, as the EBIT Margin is a primary determinant of profitability.

Efficiency (Asset Turnover)

Asset Turnover consistently declined from 0.40 in 2021 to a low of 0.28 in 2023. A modest recovery occurred in both 2024 and 2025, reaching 0.35 and 0.39 respectively. This suggests a decreasing ability to generate sales from its asset base, contributing to the decline in ROA, particularly in 2023. The recent increases in Asset Turnover partially offset the negative impact of the 2024 EBIT Margin decline.

Tax Burden

The Tax Burden remained relatively stable throughout the period, fluctuating between 0.86 and 0.89. This indicates consistent tax management practices and minimal impact on net income relative to pre-tax income. The stability of this ratio suggests that changes in ROA are primarily driven by factors other than tax rates.

Interest Burden

The Interest Burden demonstrated a decreasing trend from 0.85 in 2021 to 0.59 in 2024, indicating improved financial leverage and reduced interest expense as a percentage of EBIT. However, it increased to 0.77 in 2025. This reduction in interest burden positively influenced ROA, particularly in 2024, but the 2025 increase partially offset this benefit.

The decline in ROA in 2023 and 2024 appears to be primarily driven by the combined effect of decreasing Asset Turnover and, more significantly, the sharp drop in EBIT Margin in 2024. The partial recovery in ROA in 2025 is attributable to improvements in both the EBIT Margin and Asset Turnover, alongside a slight increase in the Interest Burden. The consistent Tax Burden suggests it is not a primary driver of the observed fluctuations.

The period under review demonstrates fluctuating profitability metrics. While the EBIT margin exhibits considerable variation, the net profit margin appears to be significantly influenced by changes in both the tax and interest burdens. A detailed examination of these relationships reveals key insights into the company’s earnings performance.

Net Profit Margin

The net profit margin initially increased from 24.25% in 2021 to 26.42% in 2022, before declining to 24.96% in 2023. A substantial decrease was observed in 2024, falling to 12.77%, followed by a recovery to 21.94% in 2025. This volatility suggests sensitivity to factors impacting earnings after EBIT.

EBIT Margin

The EBIT margin showed an upward trend from 32.51% in 2021 to 39.87% in 2023, indicating improving operational profitability. However, a significant decline occurred in 2024, dropping to 24.24%, before partially recovering to 33.38% in 2025. This suggests that core business performance is subject to fluctuations, but remains relatively strong.

Tax Burden

The tax burden remained relatively stable, fluctuating between 0.86 and 0.89 throughout the period. This consistency indicates that changes in the effective tax rate did not significantly contribute to the observed variations in net profit margin.

Interest Burden

The interest burden decreased from 0.85 in 2021 to 0.73 in 2023, potentially contributing to the increase in net profit margin during those years. A substantial decrease to 0.59 in 2024 coincided with the sharp decline in net profit margin, but then increased to 0.77 in 2025, aligning with the partial recovery in net profit margin. This suggests a strong inverse relationship between the interest burden and net profit margin.

The substantial drop in net profit margin in 2024 appears to be primarily driven by the combination of a decreased EBIT margin and a lower interest burden, indicating that while financing costs were reduced, the decline in core profitability outweighed this benefit. The subsequent recovery in 2025 suggests a partial restoration of operational performance, coupled with a moderate increase in the interest burden.