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Before buying an individual U.S. stock, examine the company’s filings, business, results, risks, valuation assumptions, and the position’s fit in your portfolio. The latest Form 10-K, Form 10-Q, and any later Form 8-Ks are useful primary sources. This checklist can help you make a more informed decision; it cannot predict whether a stock will rise or guarantee an investment outcome.
1. Find the company’s latest SEC filings
Search the SEC’s free EDGAR database by company name or ticker. For a U.S. public company, start with its newest Form 10-K and Form 10-Q, then check for Form 8-Ks filed after them. Confirm each filing’s date and reporting period: a later quarter or event filing may update information in the annual report.
- Form 10-K: The annual filing, including audited financial statements and discussion of the company, its results, and material risks.
- Form 10-Q: A quarterly filing with unaudited financial statements and updates to results, risks, and management’s discussion.
- Form 8-K: A filing for specified material developments between periodic reports.
The 10-K is not the same as an annual report to shareholders, which may be less detailed. For required annual disclosures and audited statements, use the 10-K as your starting point. The SEC’s guide to reading a 10-K explains its main sections.
2. Understand what the company does
Begin with the 10-K’s Business section. In your own words, write down what the company sells, who pays for it, and the markets or operations it describes. Then check whether the financial statements and management’s discussion support that description. A clear business summary is a useful baseline for judging later claims about growth, competition, or risk.
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3. Read results across comparable periods
Read the financial statements and Management’s Discussion and Analysis (MD&A) in the 10-K, then compare the latest 10-Q with the same quarter a year earlier and with the company’s full-year pattern. Keep annual and quarterly periods distinct: annual figures are audited, while quarterly figures in a 10-Q are unaudited.
- Track revenue, costs, and profit or loss over time.
- Review assets, liabilities, and cash flows alongside reported earnings.
- Ask whether the changes fit management’s explanation of what drove the results.
MD&A is management’s interpretation, not independent confirmation. Compare its account with the statements, notes, and subsequent filings. The SEC’s 10-K/10-Q bulletin, dated January 25, 2021, notes that the SEC “does not vouch for the accuracy of a 10-K or 10-Q.”
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4. Identify and test the risks
Read the 10-K’s Risk Factors section and look for changes in the latest 10-Q. Companies generally list risks in order of importance, but that is the company’s disclosure—not a complete, independent ranking of what could harm the business or investment. Also review legal proceedings and relevant material-event filings.
For each material risk, record what could happen and what evidence might indicate it is becoming more serious. Classify risks as company-specific, industry-related, geographic, or broader economic. Consider the SEC’s investor questions: “What are the specific risks associated with this investment?” and “What is the maximum I could lose?” Interest rates, recession, competition, and market movements can also affect an investment. A checklist cannot enumerate every possible loss.
5. Evaluate management and compare competitors
Use the company’s proxy statement to review matters put to shareholders, governance information, and executive compensation disclosures. For operating performance and competitive claims, compare the company with relevant competitors over equivalent periods and using measures that make sense for the industry.
Ask: “Is the company making money? How are they doing compared to their competitors?” Treat the answer as evidence about the business, not a prediction of future performance. A peer comparison is most useful when the companies’ business models, reporting periods, and measures are genuinely comparable.
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6. Build a reasoned view of valuation
Valuation is an estimate of what price may be reasonable given a company’s financial results, risks, and expectations. The SEC materials cited here explain how to examine those inputs but do not prescribe a valuation formula, preferred multiple, or universal threshold. A low ratio alone does not prove a stock is cheap, and a high one does not prove it is overvalued.
Write down the assumptions behind your view of the price—for example, what you expect about the company’s results and risks—and what new information would change your mind. Compare those assumptions with the company’s filings. If you use a valuation measure, understand what it measures and how differences in industry, accounting, or growth expectations affect comparisons; no single measure settles the question.
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7. Consider liquidity and portfolio fit
Liquidity is the practical question of how easily you could sell an investment when needed. The SEC recommends asking, “How liquid is this investment?” Answering for a specific stock requires current trading information; the filing checklist alone cannot establish its present liquidity.
Company research also cannot determine whether a single-stock position suits your finances. Consider your timeframe, risk tolerance, and how much of your portfolio the position would represent. The SEC explains that diversification across assets can reduce overall portfolio risk and warns that investing heavily in one individual stock can be risky. A strong company can still create concentration risk if it dominates your holdings.
8. Use the checklist to reach a decision
- Find the newest 10-K and 10-Q, plus any later 8-Ks, and note their filing dates and covered periods.
- Summarize the business, customers, products or services, and markets from the Business section.
- Compare financial results across equivalent periods; check management’s explanations against the statements and later filings.
- List material risks, check for updates, and identify evidence that could make each risk more serious.
- Review proxy disclosures and compare the company with relevant competitors on comparable measures.
- Write down valuation assumptions and what would change your view; do not treat a ratio as an automatic buy or sell signal.
- Assess liquidity using current information and consider the position’s effect on your portfolio concentration.
SEC filings make company information publicly accessible, but the SEC does not certify that a stock is a good investment or guarantee the accuracy of filings. The SEC’s Researching Investments guidance describes research as part of due diligence—not a guarantee of a favorable result. These U.S. forms and instructions are for U.S. public-company filings; foreign issuers may use different forms. Private or lightly reporting companies may provide less public information, which can make informed decisions harder, but limited information alone does not establish that a company is fraudulent.
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