We propose and validate a new measure of earnings quality based on a hidden Markov model. This measure, termed earnings fidelity, captures how faithful earnings signals are in revealing the true economic state of the firm. We estimate the measure using a Markov chain Monte Carlo procedure in a...

SEC-mandated, machine-readable structured filings, or “as-filed data,” are an alternative source to Compustat for companies’ accounting data. Discrepancies between as-filed and Compustat data, potentially a result of Compustat’s standardizations, affect inferences about the existence and...