Amgen Inc. (NASDAQ:AMGN)

The analysis of the two-component DuPont disaggregation reveals a significant structural shift in the drivers of Return on Equity (ROE) over the observed period. The overall trajectory of ROE is characterized by a precipitous decline from extreme peaks in early 2022, followed by a period of volatility and a gradual stabilization toward the end of the series.

Return on Equity (ROE) Trends

ROE exhibited a sharp downward trend, falling from a peak of 624.78% in March 2022 to a trough of 52.83% in June 2024. Following this minimum, a partial recovery occurred, with the ratio fluctuating between 72.82% and 95.59% through March 2026. The magnitude of this decline suggests a fundamental transition in how equity returns are generated.

Return on Assets (ROA) Performance

ROA remained relatively stable between 9.67% and 11.09% throughout 2022, before entering a period of contraction. A significant decline was observed through the first half of 2024, reaching a low of 3.44% in June 2024. From July 2024 onward, a consistent recovery trend is evident, with ROA improving to 8.43% by March 2026, indicating a restoration of asset utilization efficiency and profitability.

Financial Leverage Dynamics

Financial leverage underwent a dramatic reduction, starting at an exceptional high of 64.62 in March 2022 and collapsing to 17.79 by December 2022. This deleveraging process continued more gradually over the subsequent years, reaching a low of 9.37 in September 2025 before stabilizing near 10.07 in March 2026. This represents a substantial decrease in the use of debt to amplify returns.

Interrelationship and Drivers of ROE

The early collapse in ROE was primarily driven by the aggressive reduction in financial leverage, which removed the massive amplification effect present in early 2022. The subsequent trough in ROE during mid-2024 was the result of a simultaneous decline in both asset efficiency (ROA) and leverage. The recovery in ROE observed from late 2024 through 2026 is predominantly attributed to the improvement in ROA, as financial leverage remained relatively low and stable during this recovery phase.

The return on equity (ROE) exhibits a significant downward trajectory from a peak of 624.78% in March 2022, reaching a trough of 52.83% in June 2024 before stabilizing in the 84% to 95% range by March 2026. This overall decline is the result of a combined contraction in financial leverage and a period of margin volatility, partially offset by a gradual improvement in asset efficiency.

Net Profit Margin

Profitability remained robust through 2022 and early 2023, peaking at 31.77% in March 2023. A sharp contraction occurred in 2024, with margins falling to a low of 10.60% in June 2024. A steady recovery trend followed, with margins incrementally climbing back to 21.98% by March 2026, indicating a successful restoration of operational profitability.

Asset Turnover

Asset utilization experienced a decline from 0.41 in mid-2022 to a plateau of 0.28 throughout much of 2023. Starting in March 2024, a consistent upward trend is observed, with the ratio improving to 0.39 by December 2025. This indicates a gradual increase in the efficiency of generating revenue from the asset base.

Financial Leverage

The most dramatic shift occurred in the leverage ratio, which collapsed from 64.62 in March 2022 to 11.83 by September 2023. While some volatility persisted through 2024 and 2025, the ratio ended at 10.07 in March 2026. This substantial deleveraging effort removed the primary driver of the extreme ROE levels seen at the beginning of the period.

The analysis indicates that the initial extreme ROE was heavily dependent on high financial leverage rather than operational efficiency. The subsequent normalization of ROE was driven first by aggressive deleveraging and later by a significant margin compression in 2024. The stabilization of ROE in the final quarters is attributed to the recovery of net profit margins and the steady improvement in asset turnover, suggesting a transition toward a more sustainable and operationally driven return profile.

The analysis of the five-component DuPont decomposition reveals a substantial contraction in Return on Equity (ROE) over the period from March 2022 to March 2026. ROE decreased from a peak of 624.78% to 84.87%, a decline primarily driven by a drastic reduction in financial leverage and significant volatility in operating margins.

Financial Leverage

The most pronounced trend is the precipitous decline in financial leverage, which fell from 64.62 in March 2022 to 10.07 by March 2026. This suggests a strategic shift toward deleveraging or a significant increase in the equity base relative to total assets, which served as the primary catalyst for the reduction in ROE.

Operating Efficiency and EBIT Margin

EBIT margins exhibited significant volatility. After an initial upward trend peaking at 44.53% in June 2023, margins experienced a sharp contraction, reaching a low of 22.81% in June 2024. A subsequent recovery is observed, with margins stabilizing around 33.18% by March 2026. This volatility indicates fluctuating operational profitability during the mid-period of the analysis.

Interest Burden

The interest burden ratio shows a marked decline from 0.84 in early 2022 to a trough of 0.52 in June 2024, before recovering to 0.77 by March 2026. The dip in this ratio reflects a period where interest expenses consumed a larger portion of operating income, coinciding with the lowest point of the EBIT margin.

Asset Turnover

Asset turnover remained relatively low but showed a gradual improvement over time. After dipping to 0.28 during much of 2023, the ratio climbed steadily to peak at 0.39 in December 2025 before settling at 0.38 in March 2026. This indicates a slight increase in the efficiency of asset utilization to generate revenue.

Tax Burden

The tax burden remained the most stable component of the analysis, fluctuating narrowly between 0.85 and 0.90. This stability suggests that the company's effective tax rate remained consistent and did not meaningfully contribute to the overall variance in ROE.

In summary, the significant erosion of ROE is not a result of tax or efficiency failures, but is instead predominantly attributed to the aggressive reduction of financial leverage. While operational margins faced a period of instability between 2023 and 2024, they have since shown signs of stabilization, while asset turnover has marginally improved.

The analysis of the Return on Assets (ROA) through its two-component disaggregation reveals a period of significant volatility characterized by a sharp contraction and a subsequent sustained recovery phase between March 2022 and March 2026.

Net Profit Margin

Profitability exhibited a peaking trend in early 2023, reaching a maximum of 31.77% in March. This peak was followed by a substantial contraction, with margins declining sharply to a trough of 10.60% by June 2024. Following this low point, a consistent upward trajectory was observed, with the margin recovering to 21.98% by March 2026, suggesting a restoration of operational efficiency and pricing power.

Asset Turnover

Asset utilization experienced an initial decline from 0.41 in the first half of 2022 to a stagnant period of 0.28 throughout most of 2023. A gradual and steady improvement began in early 2024, as the ratio climbed incrementally from 0.30 to 0.38 by March 2026. This trend indicates a progressive increase in the efficiency with which the asset base is being leveraged to generate revenue.

Return on Assets (ROA)

The overall ROA reflects the compounded effect of both margin and turnover fluctuations. After maintaining a strong position in 2022, peaking at 11.09% in June, the ROA entered a downward trend that culminated in a nadir of 3.44% in June 2024. This decline was the result of a simultaneous drop in both profit margins and asset turnover. The recovery phase from mid-2024 through March 2026 shows a steady climb back to 8.43%, driven by the synchronized improvement of both underlying components.

The Return on Assets (ROA) exhibits a cyclical pattern over the analyzed period, characterized by an initial peak, a significant contraction, and a subsequent recovery. ROA reached its maximum of 11.09% in June 2022 before entering a prolonged decline that bottomed at 3.44% in June 2024. From July 2024 through March 2026, a consistent recovery trend is observed, with ROA returning to 8.43%.

Operating Efficiency (EBIT Margin)

The EBIT Margin was a primary driver of volatility. After peaking at 44.53% in June 2023, the margin experienced a sharp contraction, falling to a low of 22.81% by June 2024. This represents a significant erosion of operating profitability. However, a steady recovery followed, with margins climbing back to 33.18% by March 2026, indicating a restoration of operational efficiency.

Financial Leverage and Interest Burden

The Interest Burden remained stable around 0.84 to 0.86 through 2022 but declined sharply starting in late 2023. A trough was reached in June 2024 at 0.52, suggesting a substantial increase in interest expenses relative to operating income during this window. Similar to the EBIT margin, the interest burden showed a gradual recovery, improving to 0.77 by the end of the period.

Asset Utilization (Asset Turnover)

Asset Turnover remained relatively stagnant at 0.28 throughout 2023. Beginning in March 2024, a consistent upward trend emerged, with the ratio increasing from 0.30 to a peak of 0.39 in December 2025. This suggests an improved ability to generate revenue from the company's asset base over the latter half of the analyzed timeframe.

Tax Efficiency (Tax Burden)

The Tax Burden remained the most stable component of the ROA disaggregation. Values fluctuated within a narrow range between 0.85 and 0.90, indicating that changes in the effective tax rate had a negligible impact on the overall fluctuations in ROA compared to operating and financing factors.

The overall analysis indicates that the decline in ROA during 2024 was the result of a simultaneous compression in both operating margins and interest coverage. The subsequent recovery in ROA was supported by a tripartite improvement: the restoration of EBIT margins, a reduction in the relative burden of interest expenses, and a steady increase in asset turnover.

The net profit margin exhibited significant volatility over the observed period, characterized by an initial phase of expansion, a sharp contraction in early 2024, and a subsequent steady recovery through early 2026.

EBIT Margin

Operating profitability demonstrated a strong upward trend from March 2022, reaching a peak of 44.53% in June 2023. This was followed by a severe decline in the first half of 2024, where the margin fell to a low of 22.81% by June 2024. Following this trough, a consistent recovery pattern emerged, with the margin improving to 33.18% by March 2026.

Interest Burden

The interest burden remained stable between 0.84 and 0.86 until March 2023, after which a downward trend commenced. A significant deterioration occurred between December 2023 and June 2024, with the ratio dropping from 0.73 to 0.52, signaling a substantial increase in the relative impact of interest expenses on earnings. From July 2024 onward, the ratio recovered progressively, returning to 0.77 by March 2026.

Tax Burden

The tax burden remained the most consistent variable throughout the period, fluctuating marginally between a high of 0.90 and a low of 0.85. The absence of a strong directional trend suggests that the company's effective tax rate remained relatively stable and did not significantly contribute to the volatility of the net profit margin.

The collapse of the net profit margin in the first half of 2024, where it reached a low of 10.60%, was driven by a concurrent decline in both operating efficiency and interest coverage. The subsequent recovery of the net profit margin to 21.98% by March 2026 is directly attributable to the synchronized improvement in EBIT margins and the reduction of the interest burden's impact on profitability.