Auditor changes
Around 16 US public companies change auditors every week. Follow every new auditor engagement and departure.
The Ideagen Audit Analytics auditor change database tracks auditor changes disclosed by SEC registrants since 2000.

Follow all wins and losses in the public company auditor market

Search changes with related accounting isssues, internal controls, limited scope, financial restatements, audit opinions, management representation, illegal acts or SEC investigations

Includes Indicators for board approval and auditor agreement with the registrant’s disclosure of the auditor change

Identify auditor changes due to accounting or managerial issues, and distinguish between resignation versus dismissal

Discover how shifts in the regulatory and market environments impact auditor changes
All SEC registrants must disclose an auditor resignation, declination or dismissal within four days.
Rule: Item 304 of Regulation S-K