How does DuPont analysis decompose ROE, and how can the divergence between operating cash flow and net profit be quantitatively analyzed?

Net profit margin = (Operating revenue − Cost of goods sold − Period expenses − Other losses + Other gains) ÷ Operating revenue This allows further analysis of driving factors such as gross margin, sales expense ratio, administrative expense ratio, and financial expense ratio. 1.4 Practical Considerations ・ Horizontal comparison: Compare the target company with industry leaders to identify which factor drives the ROE difference. ・ Vertical comparison: Analyze changes in the company’s own ROE—whether a decline in net profit margin reflects competitiveness issues, or a decline in asset turnover reflects operational inefficiencies. ・ Beware of excessive leverage: An equity multiplier above 4 warrants caution, as such high ROE may stem from risky, highly leveraged financing. II. Quantitative Analysis of Divergence Between Operating Cash Flow and Net Profit Divergence refers to significant discrepancies—either in absolute amount or trend—between operating cash flow (OCF) and net profit (NP). Such discrepancies often serve as an “early warning signal” for earnings quality. 2.1 Core Quantitative Metrics Metric Formula Healthy Standard Divergence Signal Cash Flow Coverage Ratio OCF ÷ NP >1 (or close to 1) <0.7 or persistently declining OCF–NP Difference OCF − NP Positive or modestly negative Persistently large negative values Difference in Growth Rates OCF growth rate − NP growth rate Synchronized OCF growth rate consistently and significantly lower than NP growth rate 2.2 Quantitative Analysis Steps for Divergence Step 1: Calculate annual differences and trends Collect five years of data and compute both the absolute OCF–NP difference and its relative scale (difference ÷ total assets) for each year. Step 2: Identify direction of divergence Scenario Direction of Divergence Possible Causes Profit grows, but OCF declines or turns negative “Paper prosperity” Surge in accounts receivable; inventory buildup; aggressive revenue recognition Profit declines, but OCF increases “Hidden goldmine” Reduction in working capital; asset disposals; receipt of large advance payments Both decline sharply Operational deterioration Shrinking sales; poor collections; inflexible costs Step 3: Decompose adjustments linking OCF and NP The indirect method reconciliation—from net profit to operating cash flow—is key to analyzing divergence. Adjustment items fall into three categories: Operating cash flow = Net profit + Non-cash expenses (depreciation, amortization, impairment provisions) ± Non-operating gains/losses (e.g., gains on asset disposal, investment income—must be excluded) ± Changes in working capital (accounts receivable, inventory, accounts payable, advance receipts, etc.) Quantify contribution of each adjustment item to the OCF–NP difference: Adjustment Item Contribution to OCF–NP Difference Healthy Signal Warning Signal Decrease/increase in accounts receivable Decrease → boosts OCF; increase → reduces OCF Consistent receivables reduction Persistent, sharp increase in receivables Decrease/increase in inventory Same logic as above Normal inventory turnover Severe inventory buildup Increase/decrease in accounts payable Increase → boosts OCF; decrease → reduces OCF Prudent use of supplier credit Excessive delays (risks supply chain stability) Depreciation, amortization, and other non-cash expenses Boosts OCF (but does not affect profitability) Normal No specific risk Step 4: Calculate “OCF Deviation Degree” OCF Deviation Degree = (OCF − NP) ÷ NP × 100%

How can one systematically learn Graham’s investment strategy?

Bargain stock strategy: Select stocks with low P/E and P/B ratios—or stocks whose market capitalization is less than one-third of net current assets. Such stocks typically offer higher margin of safety. Special situations arbitrage: Exploit market anomalies such as corporate mergers, tender offers, etc., for arbitrage opportunities. This strategy demands more specialized market analysis and judgment. Convertible bond investing: Invest in high-quality convertible bonds trading near par value and with low premium—offering low risk and high return potential. Graham’s investment philosophy emphasizes rational investing, value investing, and margin of safety—providing invaluable guidance for ordinary investors. Indeed, here are concrete examples illustrating Graham’s investment strategies: I. Focus on Intrinsic Value and Margin of Safety Graham stresses evaluating a company’s intrinsic value and buying only when the market price falls significantly below it—ensuring both safety and potential for substantial returns. Examples: • Northern Pipe Line Co. Investment Case: In 1926, Graham discovered that Northern Pipe Line held a large portfolio of high-grade railroad bonds whose market value alone exceeded the company’s total market capitalization. Through rigorous analysis, he concluded the stock was deeply undervalued. He began accumulating shares and persistently urged management to distribute the bonds to shareholders to reflect true value. Eventually, Graham gained partial voting control and achieved substantial returns through strategic interventions. • DuPont Stock Investment: In the 1950s, Graham analyzed DuPont’s intrinsic value and found its stock severely undervalued. He purchased large quantities—and the subsequent sharp rise in share price validated his value-investment approach. II. Bargain Stock Strategy Graham’s bargain stock strategy involves selecting stocks with low P/E and P/B ratios—or those whose market capitalization falls below net current assets. Such stocks generally provide a high margin of safety. Example: • Selecting low-P/E stocks: Graham sought stocks whose P/E ratios were below the market average for investment.

DuPont stock trades below fair value as earnings growth story builds

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DuPont shares trade below estimated fair value despite strong projected earnings growth of 44.3% for 2026, supported by its portfolio of engineered materials and specialty products.

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