His research focuses on financial intermediaries and their roles in the capital market. His work has been published in the Journal of Financial Economics, Review of Accounting Studies, Auditing: A Journal of Practice & Theory, Journal of Business Finance and Accounting and Accounting Horizons. One of his articles was featured in the Harvard Law School Forum on Corporate Governance and Financial Regulation and in Dow Jones Financial News. Professor Xie has been invited to serve as reviewer for Contemporary Accounting Research, Journal of Accounting and Public Policy, Journal of Accounting, Auditing and Finance, and Europe Accounting Review. He also has been invited to present and discuss papers at national conferences.