Definition

Auditor's report

The independent auditor's signed opinion inside the annual report: whether the statements fairly present the company's position under GAAP. Since 2019 it also names critical audit matters — the judgments the auditor found hardest — which is the closest a filing comes to a map of where the numbers bend.

Formula

Unqualified opinion = statements fairly presented + (for larger filers) effective internal controls

Drivers — what actually moves it

Opinion type: unqualified is the norm; anything else — qualified, adverse, going-concern language — is a five-alarm read.
Critical audit matters: the auditor's own list of the accounts requiring the most judgment — revenue recognition and valuation allowances recur.
Internal controls: an ICFR opinion accompanies most 10-Ks; a material weakness is disclosed there before problems surface in figures.

Where it comes from

Not a filing concept — the auditor's own signed report, printed with the statements it opines on. 10-K Item 8, immediately before the financial statements: the opinion, its basis, and the critical audit matters.

Sector caveats — where this breaks

An unqualified opinion is assurance about presentation, not a judgment that the business is good — it clears the numbers, not the strategy.

Drill it in a live lesson Form 10-K

Educational use only — not investment advice. Figures come from public SEC filings; Echelon teaches you to analyze data, it never recommends buying or selling any security.