Stock Analysis on Net

Costco Wholesale Corp. (NASDAQ:COST)

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

Microsoft Excel

Two-Component Disaggregation of ROE

Costco Wholesale Corp., decomposition of ROE (quarterly data)

Microsoft Excel
ROE = ROA × Financial Leverage
Sep 1, 2024 31.19% = 10.55% × 2.96
May 12, 2024 32.95% = 10.56% × 3.12
Feb 18, 2024 32.73% = 10.24% × 3.19
Nov 26, 2023 24.92% = 8.84% × 2.82
Sep 3, 2023 25.11% = 9.12% × 2.75
May 7, 2023 25.46% = 8.99% × 2.83
Feb 12, 2023 26.55% = 9.05% × 2.93
Nov 20, 2022 27.40% = 8.91% × 3.08
Aug 28, 2022 28.31% = 9.11% × 3.11
May 8, 2022 28.28% = 8.84% × 3.20
Feb 13, 2022 28.39% = 8.74% × 3.25
Nov 21, 2021 27.97% = 8.05% × 3.47
Aug 29, 2021 28.51% = 8.45% × 3.37
May 9, 2021 28.67% = 8.25% × 3.47
Feb 14, 2021 27.75% = 7.91% × 3.51
Nov 22, 2020 29.10% = 7.18% × 4.05
Aug 30, 2020 21.89% = 7.20% × 3.04
May 10, 2020 22.08% = 7.17% × 3.08
Feb 16, 2020 22.74% = 7.74% × 2.94
Nov 24, 2019 23.55% = 7.26% × 3.24
Sep 1, 2019 24.00% = 8.06% × 2.98
May 12, 2019 = × 3.02
Feb 17, 2019 = × 3.09
Nov 25, 2018 = × 3.33

Based on: 10-K (reporting date: 2024-09-01), 10-Q (reporting date: 2024-05-12), 10-Q (reporting date: 2024-02-18), 10-Q (reporting date: 2023-11-26), 10-K (reporting date: 2023-09-03), 10-Q (reporting date: 2023-05-07), 10-Q (reporting date: 2023-02-12), 10-Q (reporting date: 2022-11-20), 10-K (reporting date: 2022-08-28), 10-Q (reporting date: 2022-05-08), 10-Q (reporting date: 2022-02-13), 10-Q (reporting date: 2021-11-21), 10-K (reporting date: 2021-08-29), 10-Q (reporting date: 2021-05-09), 10-Q (reporting date: 2021-02-14), 10-Q (reporting date: 2020-11-22), 10-K (reporting date: 2020-08-30), 10-Q (reporting date: 2020-05-10), 10-Q (reporting date: 2020-02-16), 10-Q (reporting date: 2019-11-24), 10-K (reporting date: 2019-09-01), 10-Q (reporting date: 2019-05-12), 10-Q (reporting date: 2019-02-17), 10-Q (reporting date: 2018-11-25).

The primary reason for the decrease in return on equity ratio (ROE) over Q4 2024 is the decrease in financial leverage ratio.


Three-Component Disaggregation of ROE

Costco Wholesale Corp., decomposition of ROE (quarterly data)

Microsoft Excel
ROE = Net Profit Margin × Asset Turnover × Financial Leverage
Sep 1, 2024 31.19% = 2.95% × 3.57 × 2.96
May 12, 2024 32.95% = 2.88% × 3.66 × 3.12
Feb 18, 2024 32.73% = 2.78% × 3.68 × 3.19
Nov 26, 2023 24.92% = 2.70% × 3.27 × 2.82
Sep 3, 2023 25.11% = 2.65% × 3.45 × 2.75
May 7, 2023 25.46% = 2.60% × 3.46 × 2.83
Feb 12, 2023 26.55% = 2.63% × 3.44 × 2.93
Nov 20, 2022 27.40% = 2.59% × 3.43 × 3.08
Aug 28, 2022 28.31% = 2.62% × 3.47 × 3.11
May 8, 2022 28.28% = 2.65% × 3.34 × 3.20
Feb 13, 2022 28.39% = 2.67% × 3.27 × 3.25
Nov 21, 2021 27.97% = 2.59% × 3.10 × 3.47
Aug 29, 2021 28.51% = 2.61% × 3.24 × 3.37
May 9, 2021 28.67% = 2.58% × 3.19 × 3.47
Feb 14, 2021 27.75% = 2.48% × 3.19 × 3.51
Nov 22, 2020 29.10% = 2.55% × 2.81 × 4.05
Aug 30, 2020 21.89% = 2.45% × 2.94 × 3.04
May 10, 2020 22.08% = 2.36% × 3.04 × 3.08
Feb 16, 2020 22.74% = 2.44% × 3.18 × 2.94
Nov 24, 2019 23.55% = 2.47% × 2.94 × 3.24
Sep 1, 2019 24.00% = 2.45% × 3.29 × 2.98
May 12, 2019 = × × 3.02
Feb 17, 2019 = × × 3.09
Nov 25, 2018 = × × 3.33

Based on: 10-K (reporting date: 2024-09-01), 10-Q (reporting date: 2024-05-12), 10-Q (reporting date: 2024-02-18), 10-Q (reporting date: 2023-11-26), 10-K (reporting date: 2023-09-03), 10-Q (reporting date: 2023-05-07), 10-Q (reporting date: 2023-02-12), 10-Q (reporting date: 2022-11-20), 10-K (reporting date: 2022-08-28), 10-Q (reporting date: 2022-05-08), 10-Q (reporting date: 2022-02-13), 10-Q (reporting date: 2021-11-21), 10-K (reporting date: 2021-08-29), 10-Q (reporting date: 2021-05-09), 10-Q (reporting date: 2021-02-14), 10-Q (reporting date: 2020-11-22), 10-K (reporting date: 2020-08-30), 10-Q (reporting date: 2020-05-10), 10-Q (reporting date: 2020-02-16), 10-Q (reporting date: 2019-11-24), 10-K (reporting date: 2019-09-01), 10-Q (reporting date: 2019-05-12), 10-Q (reporting date: 2019-02-17), 10-Q (reporting date: 2018-11-25).

The primary reason for the decrease in return on equity ratio (ROE) over Q4 2024 is the decrease in financial leverage ratio.


Five-Component Disaggregation of ROE

Costco Wholesale Corp., decomposition of ROE (quarterly data)

Microsoft Excel
ROE = Tax Burden × Interest Burden × EBIT Margin × Asset Turnover × Financial Leverage
Sep 1, 2024 31.19% = 0.76 × 0.98 × 3.97% × 3.57 × 2.96
May 12, 2024 32.95% = 0.75 × 0.98 × 3.92% × 3.66 × 3.12
Feb 18, 2024 32.73% = 0.75 × 0.98 × 3.79% × 3.68 × 3.19
Nov 26, 2023 24.92% = 0.74 × 0.98 × 3.73% × 3.27 × 2.82
Sep 3, 2023 25.11% = 0.74 × 0.98 × 3.64% × 3.45 × 2.75
May 7, 2023 25.46% = 0.75 × 0.98 × 3.54% × 3.46 × 2.83
Feb 12, 2023 26.55% = 0.75 × 0.98 × 3.57% × 3.44 × 2.93
Nov 20, 2022 27.40% = 0.75 × 0.98 × 3.54% × 3.43 × 3.08
Aug 28, 2022 28.31% = 0.75 × 0.98 × 3.56% × 3.47 × 3.11
May 8, 2022 28.28% = 0.75 × 0.98 × 3.60% × 3.34 × 3.20
Feb 13, 2022 28.39% = 0.75 × 0.98 × 3.65% × 3.27 × 3.25
Nov 21, 2021 27.97% = 0.75 × 0.98 × 3.54% × 3.10 × 3.47
Aug 29, 2021 28.51% = 0.76 × 0.97 × 3.53% × 3.24 × 3.37
May 9, 2021 28.67% = 0.76 × 0.97 × 3.48% × 3.19 × 3.47
Feb 14, 2021 27.75% = 0.76 × 0.97 × 3.36% × 3.19 × 3.51
Nov 22, 2020 29.10% = 0.76 × 0.97 × 3.44% × 2.81 × 4.05
Aug 30, 2020 21.89% = 0.75 × 0.97 × 3.35% × 2.94 × 3.04
May 10, 2020 22.08% = 0.75 × 0.97 × 3.23% × 3.04 × 3.08
Feb 16, 2020 22.74% = 0.77 × 0.97 × 3.26% × 3.18 × 2.94
Nov 24, 2019 23.55% = 0.77 × 0.97 × 3.30% × 2.94 × 3.24
Sep 1, 2019 24.00% = 0.78 × 0.97 × 3.26% × 3.29 × 2.98
May 12, 2019 = × × × × 3.02
Feb 17, 2019 = × × × × 3.09
Nov 25, 2018 = × × × × 3.33

Based on: 10-K (reporting date: 2024-09-01), 10-Q (reporting date: 2024-05-12), 10-Q (reporting date: 2024-02-18), 10-Q (reporting date: 2023-11-26), 10-K (reporting date: 2023-09-03), 10-Q (reporting date: 2023-05-07), 10-Q (reporting date: 2023-02-12), 10-Q (reporting date: 2022-11-20), 10-K (reporting date: 2022-08-28), 10-Q (reporting date: 2022-05-08), 10-Q (reporting date: 2022-02-13), 10-Q (reporting date: 2021-11-21), 10-K (reporting date: 2021-08-29), 10-Q (reporting date: 2021-05-09), 10-Q (reporting date: 2021-02-14), 10-Q (reporting date: 2020-11-22), 10-K (reporting date: 2020-08-30), 10-Q (reporting date: 2020-05-10), 10-Q (reporting date: 2020-02-16), 10-Q (reporting date: 2019-11-24), 10-K (reporting date: 2019-09-01), 10-Q (reporting date: 2019-05-12), 10-Q (reporting date: 2019-02-17), 10-Q (reporting date: 2018-11-25).

The primary reason for the decrease in return on equity ratio (ROE) over Q4 2024 is the decrease in financial leverage ratio.


Two-Component Disaggregation of ROA

Costco Wholesale Corp., decomposition of ROA (quarterly data)

Microsoft Excel
ROA = Net Profit Margin × Asset Turnover
Sep 1, 2024 10.55% = 2.95% × 3.57
May 12, 2024 10.56% = 2.88% × 3.66
Feb 18, 2024 10.24% = 2.78% × 3.68
Nov 26, 2023 8.84% = 2.70% × 3.27
Sep 3, 2023 9.12% = 2.65% × 3.45
May 7, 2023 8.99% = 2.60% × 3.46
Feb 12, 2023 9.05% = 2.63% × 3.44
Nov 20, 2022 8.91% = 2.59% × 3.43
Aug 28, 2022 9.11% = 2.62% × 3.47
May 8, 2022 8.84% = 2.65% × 3.34
Feb 13, 2022 8.74% = 2.67% × 3.27
Nov 21, 2021 8.05% = 2.59% × 3.10
Aug 29, 2021 8.45% = 2.61% × 3.24
May 9, 2021 8.25% = 2.58% × 3.19
Feb 14, 2021 7.91% = 2.48% × 3.19
Nov 22, 2020 7.18% = 2.55% × 2.81
Aug 30, 2020 7.20% = 2.45% × 2.94
May 10, 2020 7.17% = 2.36% × 3.04
Feb 16, 2020 7.74% = 2.44% × 3.18
Nov 24, 2019 7.26% = 2.47% × 2.94
Sep 1, 2019 8.06% = 2.45% × 3.29
May 12, 2019 = ×
Feb 17, 2019 = ×
Nov 25, 2018 = ×

Based on: 10-K (reporting date: 2024-09-01), 10-Q (reporting date: 2024-05-12), 10-Q (reporting date: 2024-02-18), 10-Q (reporting date: 2023-11-26), 10-K (reporting date: 2023-09-03), 10-Q (reporting date: 2023-05-07), 10-Q (reporting date: 2023-02-12), 10-Q (reporting date: 2022-11-20), 10-K (reporting date: 2022-08-28), 10-Q (reporting date: 2022-05-08), 10-Q (reporting date: 2022-02-13), 10-Q (reporting date: 2021-11-21), 10-K (reporting date: 2021-08-29), 10-Q (reporting date: 2021-05-09), 10-Q (reporting date: 2021-02-14), 10-Q (reporting date: 2020-11-22), 10-K (reporting date: 2020-08-30), 10-Q (reporting date: 2020-05-10), 10-Q (reporting date: 2020-02-16), 10-Q (reporting date: 2019-11-24), 10-K (reporting date: 2019-09-01), 10-Q (reporting date: 2019-05-12), 10-Q (reporting date: 2019-02-17), 10-Q (reporting date: 2018-11-25).

The primary reason for the decrease in return on assets ratio (ROA) over Q4 2024 is the decrease in asset turnover ratio.


Four-Component Disaggregation of ROA

Costco Wholesale Corp., decomposition of ROA (quarterly data)

Microsoft Excel
ROA = Tax Burden × Interest Burden × EBIT Margin × Asset Turnover
Sep 1, 2024 10.55% = 0.76 × 0.98 × 3.97% × 3.57
May 12, 2024 10.56% = 0.75 × 0.98 × 3.92% × 3.66
Feb 18, 2024 10.24% = 0.75 × 0.98 × 3.79% × 3.68
Nov 26, 2023 8.84% = 0.74 × 0.98 × 3.73% × 3.27
Sep 3, 2023 9.12% = 0.74 × 0.98 × 3.64% × 3.45
May 7, 2023 8.99% = 0.75 × 0.98 × 3.54% × 3.46
Feb 12, 2023 9.05% = 0.75 × 0.98 × 3.57% × 3.44
Nov 20, 2022 8.91% = 0.75 × 0.98 × 3.54% × 3.43
Aug 28, 2022 9.11% = 0.75 × 0.98 × 3.56% × 3.47
May 8, 2022 8.84% = 0.75 × 0.98 × 3.60% × 3.34
Feb 13, 2022 8.74% = 0.75 × 0.98 × 3.65% × 3.27
Nov 21, 2021 8.05% = 0.75 × 0.98 × 3.54% × 3.10
Aug 29, 2021 8.45% = 0.76 × 0.97 × 3.53% × 3.24
May 9, 2021 8.25% = 0.76 × 0.97 × 3.48% × 3.19
Feb 14, 2021 7.91% = 0.76 × 0.97 × 3.36% × 3.19
Nov 22, 2020 7.18% = 0.76 × 0.97 × 3.44% × 2.81
Aug 30, 2020 7.20% = 0.75 × 0.97 × 3.35% × 2.94
May 10, 2020 7.17% = 0.75 × 0.97 × 3.23% × 3.04
Feb 16, 2020 7.74% = 0.77 × 0.97 × 3.26% × 3.18
Nov 24, 2019 7.26% = 0.77 × 0.97 × 3.30% × 2.94
Sep 1, 2019 8.06% = 0.78 × 0.97 × 3.26% × 3.29
May 12, 2019 = × × ×
Feb 17, 2019 = × × ×
Nov 25, 2018 = × × ×

Based on: 10-K (reporting date: 2024-09-01), 10-Q (reporting date: 2024-05-12), 10-Q (reporting date: 2024-02-18), 10-Q (reporting date: 2023-11-26), 10-K (reporting date: 2023-09-03), 10-Q (reporting date: 2023-05-07), 10-Q (reporting date: 2023-02-12), 10-Q (reporting date: 2022-11-20), 10-K (reporting date: 2022-08-28), 10-Q (reporting date: 2022-05-08), 10-Q (reporting date: 2022-02-13), 10-Q (reporting date: 2021-11-21), 10-K (reporting date: 2021-08-29), 10-Q (reporting date: 2021-05-09), 10-Q (reporting date: 2021-02-14), 10-Q (reporting date: 2020-11-22), 10-K (reporting date: 2020-08-30), 10-Q (reporting date: 2020-05-10), 10-Q (reporting date: 2020-02-16), 10-Q (reporting date: 2019-11-24), 10-K (reporting date: 2019-09-01), 10-Q (reporting date: 2019-05-12), 10-Q (reporting date: 2019-02-17), 10-Q (reporting date: 2018-11-25).

The primary reason for the decrease in return on assets ratio (ROA) over Q4 2024 is the decrease in efficiency measured by asset turnover ratio.


Disaggregation of Net Profit Margin

Costco Wholesale Corp., decomposition of net profit margin ratio (quarterly data)

Microsoft Excel
Net Profit Margin = Tax Burden × Interest Burden × EBIT Margin
Sep 1, 2024 2.95% = 0.76 × 0.98 × 3.97%
May 12, 2024 2.88% = 0.75 × 0.98 × 3.92%
Feb 18, 2024 2.78% = 0.75 × 0.98 × 3.79%
Nov 26, 2023 2.70% = 0.74 × 0.98 × 3.73%
Sep 3, 2023 2.65% = 0.74 × 0.98 × 3.64%
May 7, 2023 2.60% = 0.75 × 0.98 × 3.54%
Feb 12, 2023 2.63% = 0.75 × 0.98 × 3.57%
Nov 20, 2022 2.59% = 0.75 × 0.98 × 3.54%
Aug 28, 2022 2.62% = 0.75 × 0.98 × 3.56%
May 8, 2022 2.65% = 0.75 × 0.98 × 3.60%
Feb 13, 2022 2.67% = 0.75 × 0.98 × 3.65%
Nov 21, 2021 2.59% = 0.75 × 0.98 × 3.54%
Aug 29, 2021 2.61% = 0.76 × 0.97 × 3.53%
May 9, 2021 2.58% = 0.76 × 0.97 × 3.48%
Feb 14, 2021 2.48% = 0.76 × 0.97 × 3.36%
Nov 22, 2020 2.55% = 0.76 × 0.97 × 3.44%
Aug 30, 2020 2.45% = 0.75 × 0.97 × 3.35%
May 10, 2020 2.36% = 0.75 × 0.97 × 3.23%
Feb 16, 2020 2.44% = 0.77 × 0.97 × 3.26%
Nov 24, 2019 2.47% = 0.77 × 0.97 × 3.30%
Sep 1, 2019 2.45% = 0.78 × 0.97 × 3.26%
May 12, 2019 = × ×
Feb 17, 2019 = × ×
Nov 25, 2018 = × ×

Based on: 10-K (reporting date: 2024-09-01), 10-Q (reporting date: 2024-05-12), 10-Q (reporting date: 2024-02-18), 10-Q (reporting date: 2023-11-26), 10-K (reporting date: 2023-09-03), 10-Q (reporting date: 2023-05-07), 10-Q (reporting date: 2023-02-12), 10-Q (reporting date: 2022-11-20), 10-K (reporting date: 2022-08-28), 10-Q (reporting date: 2022-05-08), 10-Q (reporting date: 2022-02-13), 10-Q (reporting date: 2021-11-21), 10-K (reporting date: 2021-08-29), 10-Q (reporting date: 2021-05-09), 10-Q (reporting date: 2021-02-14), 10-Q (reporting date: 2020-11-22), 10-K (reporting date: 2020-08-30), 10-Q (reporting date: 2020-05-10), 10-Q (reporting date: 2020-02-16), 10-Q (reporting date: 2019-11-24), 10-K (reporting date: 2019-09-01), 10-Q (reporting date: 2019-05-12), 10-Q (reporting date: 2019-02-17), 10-Q (reporting date: 2018-11-25).

The primary reason for the increase in net profit margin ratio over Q4 2024 is the increase in operating profitability measured by EBIT margin ratio.