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Fundamental analysis and financial reports
How to read a 10-K and an earnings report, the three financial statements, the key ratios and how to value a business.
Reading financial reports
- What is fundamental analysis? A beginner’s guide with Apple How fundamental analysis works: the business, the statements, the ratios and the valuation, worked through Apple’s fiscal 2025 10-K with real numbers.
- SEC filings explained: 10-K, 10-Q, 8-K, proxy, 13F and more A map of the SEC forms investors meet, the filing deadlines by filer status, and how to search EDGAR and its XBRL data, using Apple’s real filing calendar.
- How to read a 10-K: a guided walkthrough of Apple’s annual report Read a 10-K item by item using Apple’s fiscal 2025 report: what each section holds, its page number, what to read first, a checklist and the red flags.
- How to read a 10-Q: quarterly reports, nine-month columns and TTM Read a quarterly 10-Q the right way: unaudited condensed statements, year-to-date columns, the missing fourth quarter and trailing-12-month math, using Apple.
- Form 8-K: what triggers it, the item numbers and how to read one What forces a US company to file a Form 8-K, the item numbers that matter, the four-business-day deadline, furnished vs filed, and Apple’s real 8-Ks from 2025–26.
- Insider trading filings: Forms 3, 4 and 5 and how to read them Who counts as a Section 16 insider, the Form 3, 4 and 5 deadlines, the transaction codes, Rule 10b5-1 plans, and how to tell a real insider buy from routine selling.
- 13F filings: what institutional holdings reports show and miss Who must file Form 13F, the 45-day lag, what is reported and left out, how 13F differs from Schedules 13D and 13G, and the traps in reading fund holdings.
- How to read the Finabase financials tab A walkthrough of a company’s financials tab in Finabase: the annual and quarterly views, the three statement cards, the revenue flow diagram and calendar-quarter labels.
The financial statements
- Income statement: how to read one line by line, with Apple Read an income statement from net sales to diluted EPS, using Apple’s fiscal 2025 numbers: margins at every level, taxes, common-size analysis and three-year trends.
- Balance sheet: assets, liabilities and equity explained with Apple Read a balance sheet line by line with Apple’s September 27, 2025 figures: the accounting equation, current versus non-current items, odd lines and book value.
- Cash flow statement: operating, investing and financing explained Read a cash flow statement with Apple’s fiscal 2025 figures: the indirect method, why net income is not cash, securities churn, buybacks and free cash flow.
- How the three financial statements link, checked on Apple Trace how net income, cash and equity connect across the income statement, balance sheet and cash flow statement, verified on Apple’s fiscal 2025 numbers.
- Revenue recognition: the ASC 606 five steps, with Apple’s numbers How companies decide when a sale counts as revenue under ASC 606, what deferred revenue tells you, gross versus net reporting, and the red flags to check.
- Statement of shareholders’ equity: reading Apple’s equity roll-forward Read Apple’s fiscal 2025 statement of shareholders’ equity line by line: profit, dividends, buybacks, stock pay, AOCI and a negative retained-earnings balance.
- Free cash flow (FCF): definition, formula and Apple example What free cash flow is, how to calculate it, how to read FCF margin and FCF per share, and the stock-compensation debate, with Apple’s fiscal 2025 numbers.
- Working capital and the cash conversion cycle, with Apple’s numbers What working capital is, how DSO, DIO, DPO and the cash conversion cycle work, why Apple’s negative working capital is a strength, and where its changes appear.
- EBITDA: what it means, how to calculate it and its limits How to build EBITDA from net income with Apple’s fiscal 2025 numbers, how it differs from EBIT, cash flow and FCF, adjusted-EBITDA abuses, and the SEC’s non-GAAP rules.
Earnings
- Earnings per share (EPS): basic vs diluted, with Apple’s numbers Calculate basic and diluted EPS from a 10-K, see how weighted shares, stock awards and buybacks move the number, and why quarterly EPS rarely sums to the year.
- GAAP vs non-GAAP earnings: how adjusted numbers are built What US GAAP requires, what SEC Regulation G and Item 10(e) allow in adjusted figures, how to rebuild Apple’s real reconciliation, and the red flags to check.
- How to read an earnings release: a step-by-step guide Read a real earnings release, Apple’s Q4 fiscal 2025: headline numbers, year-over-year math, the statements, the non-GAAP reconciliation and a 10-minute routine.
- Earnings surprises and guidance: beats, misses and price moves How consensus estimates and earnings surprises are calculated, why most companies beat, what guidance is, and why a beat does not explain the next day’s move.
- Earnings calls: how they work and what to listen for How a US earnings call is structured, why Regulation FD makes it public, how to read guidance language, where to find transcripts, and a listening checklist.
- Quality of earnings: accruals, cash conversion and red flags Test whether reported profit is backed by cash: CFO-to-net-income, accrual ratios computed on Apple’s 10-K, one-off items, revenue quality and a red-flag checklist.
Ratios
- Price-to-earnings ratio (P/E): formula, examples and limits Calculate a P/E ratio and earnings yield from real numbers, see why Apple’s trailing P/E jumps on report days, and learn when the ratio misleads.
- Forward P/E ratio: valuing a stock on expected earnings How forward P/E is built from analyst estimates, NTM versus next-fiscal-year EPS, how far estimates can miss, and what Apple’s 29.3-to-42.0 range teaches.
- PEG ratio: adjusting the P/E for earnings growth Calculate the PEG ratio and its dividend-adjusted PEGY version, see why Apple’s PEG is 1.51 or 3.26 depending on the growth rate, and where the rule of thumb fails.
- Price-to-sales ratio (P/S): formula, examples and how to read it Calculate the price-to-sales ratio two ways, see why it works for unprofitable companies, link it to margins and P/E, and compare Apple with its peers.
- Price-to-book ratio (P/B): book value, buybacks and ROE How to calculate price-to-book, why Apple’s buybacks push it above 50, when tangible book matters, and where P/B works (banks) and fails (asset-light tech).
- Enterprise value (EV): formula, what counts as debt and cash Build enterprise value from market cap, debt and cash on Apple’s fiscal 2025 balance sheet, decide which cash to subtract, and see why EV is the takeover price.
- EV/EBITDA: the capital-structure-neutral valuation multiple Calculate EV/EBITDA and EV/EBIT on Apple’s fiscal 2025 numbers, see why debt doesn’t distort it the way it distorts P/E, and learn where EBITDA misleads.
- EV/Sales ratio: enterprise value to revenue, explained Work out EV/Sales for Apple and its peers, see why it differs from P/S, adjust it for gross margin, and learn when a revenue multiple is the right tool.
- Profit margins: gross, operating and net margin explained How to calculate gross, operating and net margin, read them as a ladder of costs, and spot mix effects and one-time charges, using Apple’s fiscal 2023–2025 results.
- Return on equity (ROE): formula, DuPont analysis and pitfalls How to calculate return on equity on average or ending equity, split it with DuPont analysis, and see why Apple’s 171% ROE says more about buybacks than profit.
- Return on assets (ROA): how to calculate and compare it Calculate return on assets, link it to margin and asset turnover, see why banks and tech firms differ, and compare Apple’s 30.9% ROA with its ROE and ROIC.
- Return on invested capital (ROIC): NOPAT, capital and WACC How to compute ROIC from NOPAT and invested capital, why Apple’s figure ranges from 65% to 281% by definition, and how ROIC versus WACC tests value creation.
- Debt-to-equity ratio: formula, versions and when it misleads How to calculate the debt-to-equity ratio, why versions differ, and why Apple’s 1.34 D/E hides a net cash position, with net debt, debt/EBITDA and its note maturities.
- Current ratio and quick ratio: measuring short-term liquidity How to calculate the current, quick and cash ratios, what each leaves out, and why Apple’s current ratio below 1 is no warning sign while elsewhere it can be.
- Interest coverage ratio: can earnings pay the interest bill? How to calculate interest coverage from EBIT or EBITDA, how lenders use coverage covenants, and Apple’s 29.1× in fiscal 2023, its last disclosed year.
- Free cash flow yield: formula, benchmarks and shareholder yield Compute free cash flow yield and P/FCF on Apple’s fiscal 2025 numbers, compare it with earnings yield and bond yields, and see how buybacks and dividends add up.
- Dividend payout ratio: formula, examples and sustainability Calculate the dividend payout ratio on earnings and on free cash flow, add buybacks for total payout, and judge whether a dividend is sustainable, with Apple’s numbers.
Valuation
- Valuation methods: intrinsic, relative and asset-based compared The main ways analysts value a company — DCF, dividend models, multiples, asset-based and sum-of-the-parts — when each one fits, and how to triangulate them.
- Discounted cash flow (DCF): a step-by-step valuation on Apple Build a DCF from free cash flow to value per share, with Apple’s fiscal 2025 numbers, terminal value, WACC, a sensitivity grid, a reverse DCF and the classic mistakes.
- Comparable company analysis: how to build and read a comps table Pick peers, align fiscal periods with TTM, build a comps table of P/E, EV/EBIT and more, and read it — worked on Apple, Microsoft and Alphabet at March 31, 2026.
- Dividend discount model (DDM): the Gordon growth formula explained Value a stock from its dividends with the Gordon growth model and multi-stage DDM, see why it breaks for low-payout Apple, and where the model fits.
- Economic moats: what protects a company’s profits, and how to test it The five sources of an economic moat, how a moat shows up in margins and returns on capital, what can erode one, and how to test a moat claim using Apple’s 10-K.
- Margin of safety: Benjamin Graham’s rule for valuation errors What a margin of safety is, how to calculate one, why valuations are ranges rather than points, and how DCF sensitivity and position sizing feed into it.
- Capital allocation: how management spends cash, and how to judge it The five uses of corporate cash, a worked look at where Apple’s fiscal 2025 cash went, how to judge buyback execution, and the filings that reveal management quality.
Educational content, not investment advice. Finabase Learn explains how markets and tools work. It does not recommend any security or strategy, and examples are for illustration only. Investing involves risk, including the loss of principal. Rules and figures are for the United States unless stated and can change — check the cited source before you act.