RepublicBank Corp. and Interfirst Corp. merged.

Dallas-based RepublicBank and InterFirst Corp. merged into a new entity named First RepublicBank Corp. First RepublicBank, with about $35 billion in assets, will be the 12th-largest bank holding company in the United States and the largest in the Southwest. Begining today, First RepublicBank’s common stock will trade on the New York Stock Exchange under the ticker symbol FRB.