This study borrows from the measurement of auditor industry expertise, defining auditors with a higher proportion of digital clients as digital expertise auditors. We examine whether auditors who actively engage in digital auditing and gain relevant experience achieve better audit outcomes during the digital transformation. Our findings reveal that digital expertise auditors lead to better audit quality in the digital market domain and their unique skills are recognized and appreciated by capital market investors and analysts (evidenced by lower stock price synchronicity and more accurate analyst forecasts). This evidence provides large-sample archival proof of how auditors can proactively respond to digital transformation and offers practical insights for audit firms developing digital auditing capabilities.