This paper analyzes economic characteristics of firms that correct previously reported quarterly earnings. The basic findings are that, relative to their industry, the sample (correcting) firms are smaller, less profitable, have higher debt, are slower growing, and face more serious uncertainties. Their average stock returns between the issuance of erroneous quarterly reports and their correction are negative. Also, correction disclosure frequently precedes SEC or stockholder suits against firm management. Results are consistent with predictions based on the economic interests of management and their auditors.