Why does the stock price plunge after an earnings release?

Why? Because stock valuation is based on the present value of future cash flows. If the market expects growth to slow down progressively, the valuation multiple naturally declines. Even if this year’s profits are exceptionally high, a stagnation in next year’s growth could force the P/E ratio to drop from 50x to 20x. This is also why cyclical stocks often trade at their lowest P/E ratios precisely when earnings peak — because the market knows such elevated profits are unsustainable. Reason Three: Hidden Risks in the Financial Report — Outsiders See the Show; Insiders See the Substance Often, financial reports appear dazzling on the surface, but a deeper dive reveals underlying problems. Institutional investors instantly spot these signals, while retail investors focus only on headline numbers. Common 'hidden risks' include: ・Revenue composition issues: Total revenue grows rapidly, but core business growth slows; growth stems mainly from one-off income or non-recurring gains. ・Declining gross margin: Revenue rises but profitability falls — indicating volume is being driven by price cuts, signaling weakening competitiveness. ・Deteriorating cash flow: Profits rise but operating cash flow declines — suggesting low-quality revenue, possibly due to bloated accounts receivable. ・Surging inventory: A sharp inventory increase may signal slowing demand or poor product sell-through. ・Shifting customer concentration: Orders from major customers decline, or reliance on a single customer intensifies. ・Conservative management guidance: Strong results accompanied by cautious — or even downward-revised — guidance for the next quarter is often the most dangerous signal. SanDisk’s earnings report was a classic case: revenue surged 372% on the surface — spectacular — yet management stated, “next quarter’s price increases will be moderate.” Institutions immediately read between the lines: the strongest phase of the pricing cycle had passed. Reason Four: Capital博弈 — Concentrated Profit-Taking at Peak Levels The final reason is purely capital-level game theory. After a stock — or an entire sector — has risen sharply, it accumulates substantial unrealized gains. These gains stand ready to be locked in, and an earnings release serves as the optimal “exit window.” Why? Before the report, investors hold off selling, fearing they’ll miss out on further upside if results beat expectations. Once the report drops, the “shoe drops”: regardless of whether results are good or bad, profit-takers seize the moment to exit — ・If results are good: “The good news is fully priced in — time to sell.” ・If results are bad: “As expected — time to cut losses.” Hence, you’ll observe a curious phenomenon: the stock often holds up before the earnings release, then falls afterward — regardless of performance. The earnings release acts as the “spillway” for concentrated profit-taking. Especially when sector positioning is crowded and shareholding structure fragile, even a minor miss can trigger a stampede — everyone rushes to exit, yet no one gets out cleanly, sending the stock into a steep plunge. Three. For Different Types of Stocks, the Logic Behind “Earnings-Driven Price Drops” Varies “Stock falls despite strong earnings” appears to be a single phenomenon, but the underlying logic differs fundamentally across stock types. Understanding which category your holding belongs to is essential for appropriate response. 1. Strong Cyclical Stocks: Peak Earnings = Peak Stock Price Typical examples: Memory chips, display panels, chemicals, coal, steel, shipping

Financial Indicator Interpretation (Updated)

Indicator Name Calculation Formula Meaning & Interpretation How to Assess / Reference Standards I. Per-Share Metrics Basic Earnings Per Share (EPS) Net profit attributable to parent company ÷ Total shares outstanding The most critical profitability metric — measures how much profit is generated per share Higher is better; YoY growth matters more; e.g., Jiahua: 0.74, Luotuo: 0.71 Diluted EPS EPS assuming full conversion of all convertible bonds/options More conservative than basic EPS — guards against sudden share dilution from new issuances A large gap between diluted and basic EPS indicates significant potential share issuance Book Value Per Share (BVPS) Total equity ÷ Total shares outstanding The book value (“net asset base”) attributable to each share P/B = Share price ÷ BVPS; P/B < 1 means “trading below book value” — share price lower than accounting value Operating Cash Flow Per Share Net operating cash flow ÷ Total shares outstanding Actual cash received per share — harder to manipulate than EPS Compare with EPS; persistently lower operating cash flow per share vs. EPS signals low-quality earnings Retained Earnings Per Share Cumulative retained earnings ÷ Total shares outstanding How much the company has “saved up” for future dividends or reinvestment Higher values imply greater dividend potential; persistently high retained earnings without dividends may indicate lack of attractive investment opportunities Reserve Per Share Capital reserve ÷ Total shares outstanding Primarily formed from share issuance premiums — usable for share bonus issues (capitalization) High reserve per share suggests potential for “high bonus share issuance”; cannot be used for cash dividends II. Profitability Metrics Total Operating Revenue Sum of all operating revenues Measures the company’s “scale” — reflects business size and industry standing Assess growth via YoY/QoQ comparisons; absolute value alone has limited meaning Profit Before Tax Operating profit + Non-operating income/expenses (pre-tax) Earnings before tax, after deducting all costs and expenses Compare with net profit to gauge tax burden impact Net Profit Attributable to Parent Company Net profit belonging to parent company shareholders The most critical profit figure — the source of shareholder returns Compare with non-recurring net profit to assess earnings quality Non-Recurring Net Profit Net profit attributable to parent company − Non-recurring gains/losses Profit excluding one-off items like asset sales, government subsidies, or investment gains More reliable than net profit attributable to parent company; if the latter is high but non-recurring net profit is low, earnings are likely propped up by one-offs — a key red-flag indicator III. Profitability Ratios Return on Average Equity (ROE) Net profit ÷ Average equity (average of beginning & ending equity) Warren Buffett’s favorite metric — measures how much profit $100 of shareholder equity generates >15%: Excellent; 10–15%: Good; 5–10%: Fair; <5%: Poor (red-flag threshold); using average equity yields greater accuracy Diluted ROE Net profit ÷ Ending equity ROE calculated using end-of-period equity — more conservative than average ROE When both figures are similar, either suffices; a large discrepancy suggests significant intra-year equity changes Gross Profit Margin (Revenue − Cost of Goods Sold) ÷ Revenue For every $100 of sales, how much remains after direct production costs — reflects product competitiveness and pricing power Higher is better; e.g., Moutai >90%, steel industry 5–10%; inter-industry comparisons are meaningless — use only within same industry

DuPont Stock Weighs Q2 Earnings Against 48 Percent EPS Growth

Sep 23, 2026

DuPont reported a 48% increase in adjusted EPS to $1.88 for Q2 2026, despite a slight stock dip. The company raised its full-year guidance while Wells Fargo maintained an overweight rating with a $166 price target.

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