Exhibit

We are aware that our report dated May 9, 2018 on our review of interim financial information of Arch Capital Group Ltd., which appears in this Quarterly Report on Form 10-Q, is incorporated by reference in the Registration Statement on Form S-3 (Registration No. 333-221344, Registration No. 333-221344-01 and Registration No. 333-221344-02) and in the Registration Statements on Forms S-8 (Registration No. 333-99974, Registration No. 333-86145, Registration No. 333-82772, Registration No. 333-211193, Registration No. 333-72182, Registration No. 333-98971, Registration No. 333-124422, Registration No. 333-142835, Registration No. 333-181308, and Registration No. 333-203993) of Arch Capital Group Ltd.