Read a company report with context.
These original guides turn filing concepts into repeatable questions, transparent arithmetic, and worked examples. They use official SEC and Investor.gov references and identify what each shortcut leaves out.
New to stock research? Follow the complete research checklist and download a free worksheet. Start with the 10-K route if you are new to filings. Choose a focused guide when a report raises a question about cash, debt, shares, timing, or unusual items.
Choose a guided path
Understand a filing
Learn the filing route, then practice with a published company report.
Start with the 10-K guide →Test earnings quality
Connect revenue and profit to working capital and operating cash flow.
Start with revenue, profit, and cash →Handle unusual items
Separate reported results from clearly labeled analytical adjustments.
Start with gains and losses →Learn with worked examples
- 8 minute guide
How to research a stock using free public filings
A practical stock research checklist: understand the business, compare financials, trace cash, check risks, and record evidence with a free worksheet.
Read the guide → - 7 minute guide
Revenue, profit, and cash are different stories
Understand why a company can report a profit without collecting cash, with a simple worked example.
Read the guide → - 7 minute guide
More shares do not always mean dilution
Compare a proportional stock split with issuing new shares, using ownership percentages rather than share counts alone.
Read the guide → - 8 minute guide
Compare dates before comparing companies
Learn to distinguish quarterly, year-to-date, and annual figures, and understand a trailing-twelve-month example.
Read the guide → - 10 minute guide
How to read a 10-K without reading it in order
A practical route through the annual filing that connects the business, risks, financial statements, notes, and management discussion.
Read the guide → - 9 minute guide
Cash versus earnings: trace the bridge
Learn how working capital, noncash charges, and classification choices can separate net income from operating cash flow.
Read the guide → - 10 minute guide
Debt and liquidity: map the obligations
Read cash, debt maturities, interest, commitments, and available borrowing together instead of relying on one leverage ratio.
Read the guide → - 9 minute guide
One-time gains and losses: adjust with care
Find unusual items, understand where they appear, and avoid turning management’s adjusted metric into an unquestioned answer.
Read the guide →
A five-question research habit
- What period does this cover? Filing dates and financial periods answer different questions.
- What does the measure mean? Revenue, profit, cash, shares, and debt are not interchangeable.
- Is it reported or calculated? Record the formula and compatible source facts for every calculation.
- What explains the change? Read the notes and management discussion, then label management’s explanation separately from filing facts.
- What remains unknown? “Unavailable” is not zero, and a filing cannot prove future performance.
Use primary evidence without losing the boundary
Open the supporting filing and confirm the company, form, reporting dates, units, amendments, and relevant note. Arqaris links to primary records so a reader can inspect the evidence rather than relying on a summary alone.
Worked examples on these pages are hypothetical and clearly labeled. They demonstrate a method; they are not forecasts, recommendations, or substitutes for a complete filing.