The Am Law 100 is reported by staff members at ALM’s publications throughout the United States, including The American Lawyer, The Connecticut Law Tribune, Daily Business Review (Miami), Fulton County Daily Report (Atlanta), The Legal Intelligencer (Philadelphia), The National Law Journal/Legal Times, The New Jersey Law Journal, New York Law Journal, The Recorder (San Francisco), and Texas Lawyer.

Most law firms provide their financials voluntarily for this report. Some choose not to cooperate, so we make estimates based on our reporting. But all data is investigated by our reporters. In the event that an error in reporting a previous year is discovered, we will correct the numbers and base the percentage changes in future years on restated numbers.