Financial Due Diligence: How to Read the Numbers
Financial due diligence has a reputation for being the domain of accountants, and the deep version is. But the first pass — the one that tells you whether a company is growing, stalling, or quietly falling apart — is something anyone can do with public filings and a bit of skepticism. For U.S. public companies, the numbers are audited and sitting right there in EDGAR.
The trend beats the snapshot
A single year's revenue tells you almost nothing. Pull three to five years and look at the shape: is revenue compounding, flat, or sliding? Are margins expanding or getting squeezed? A company growing revenue while margins collapse is buying growth it can't afford. The 10-K (annual) and 10-Q (quarterly) give you the income statement, balance sheet and cash-flow statement you need to see the trajectory.
Cash is the truth serum
Profit is an opinion; cash is a fact. Net income can be shaped by accounting choices, but the statement of cash flows is harder to dress up. Look at cash from operations — is the business actually generating cash, or is reported profit not converting into money in the bank? A persistent gap between net income and operating cash flow is worth understanding before anything else.
Read the balance sheet for landmines
Assets and equity are the headline, but the interesting parts are the obligations: total debt, when it matures, and how much cash there is to service it. A company with a wall of debt coming due in eighteen months is in a very different position than the revenue line alone suggests. Note the leverage, the maturity schedule, and any off-balance-sheet commitments flagged in the notes.
The words matter as much as the numbers
The Management's Discussion & Analysis and the Risk Factors sections of a 10-K are where management explains — because it's legally required to — what could go wrong and why the numbers moved. Read them. Material weaknesses in internal controls, going-concern language, a change of auditor, or a restatement are all signals that deserve a hard look before you rely on the financials.
Know the limits of the first pass
Public filings are audited and reliable, but they're a rear-view mirror, and they only cover public companies. Private-company financials require the company to hand them over, and then you're trusting unaudited numbers until you verify. Use the public record to form a sharp first view and to know exactly which questions to ask next — and remember that reading filings is not the same as a formal audit, and none of this is investment advice.