TY - JOUR AU - Titman,Sheridan TI - The Modigliani and Miller Theorem and Market Efficiency JF - National Bureau of Economic Research Working Paper Series VL - No. 8641 PY - 2001 Y2 - December 2001 UR - http://www.nber.org/papers/w8641 L1 - http://www.nber.org/papers/w8641.pdf N1 - Author contact info: Sheridan Titman Finance Department McCombs School of Business University of Texas at Austin Austin, TX 78712-1179 Tel: 512/232-2787 Fax: 512/471-5073 E-Mail: titman@mail.utexas.edu AB - Most of the recent literature on risk management and capital structure assumes that markets are perfect, i.e., efficient and complete. This paper presents anecdotal evidence that suggests that different capital markets (e.g., debt, equity and warrants markets) may not be perfectly integrated, and discusses the implications of this lack of integration on financing strategies. I argue that although models that assume perfect markets are sufficient to explain cross-sectional differences in financing and risk management choices within an economy, that issues relating to market conditions may be necessary to explain differences in these choices across countries and across time. ER -