TY - JOUR AU - Carlson,Mark AU - Mitchener,Kris James TI - Branch Banking, Bank Competition, and Financial Stability JF - National Bureau of Economic Research Working Paper Series VL - No. 11291 PY - 2005 Y2 - May 2005 UR - http://www.nber.org/papers/w11291 L1 - http://www.nber.org/papers/w11291.pdf N1 - Author contact info: Mark Carlson Federal Reserve Board 20th and Constitution Ave., NW Washington, DC 20551 E-Mail: mark.a.carlson@frb.gov Kris James Mitchener Department of Economics Leavey School of Business Santa Clara University Santa Clara, CA 95053 Tel: 408/554-4340 Fax: 408/554-2331 E-Mail: kmitchener@scu.edu AB - It is often argued that branching stabilizes banking systems by facilitating diversification of bank portfolios; however, previous empirical research on the Great Depression offers mixed support for this view. Analyses using state-level data find that states allowing branch banking had lower failure rates, while those examining individual banks find that branch banks were more likely to fail. We argue that an alternative hypothesis can reconcile these seemingly disparate findings. Using data on national banks from the 1920s and 1930s, we show that branch banking increases competition and forces weak banks to exit the banking system. This consolidation strengthens the system as a whole without necessarily strengthening the branch banks themselves. Our empirical results suggest that the effects that branching had on competition were quantitatively more important than geographical diversification for bank stability in the 1920s and 1930s. ER -