TY - JOUR AU - Malmendier,Ulrike AU - Tate,Geoffrey TI - CEO Overconfidence and Corporate Investment JF - National Bureau of Economic Research Working Paper Series VL - No. 10807 PY - 2004 Y2 - October 2004 UR - http://www.nber.org/papers/w10807 L1 - http://www.nber.org/papers/w10807.pdf N1 - Author contact info: Ulrike Malmendier Department of Economics 549 Evans Hall # 3880 University of California, Berkeley Berkeley, CA 94720-3880 Tel: 510-642-5038 E-Mail: ulrike@econ.berkeley.edu Geoffrey Tate Kenan-Flagler Business School University of North Carolina at Chapel Hill CB 3490 McColl Building Chapel Hill, NC 27599-3490 Tel: 919-962-7188 E-Mail: Geoffrey_Tate@kenan-flagler.unc.edu AB - We argue that managerial overconfidence can account for corporate investment distortions. Overconfident managers overestimate the returns to their investment projects and view external funds as unduly costly. Thus, they overinvest when they have abundant internal funds, but curtail investment when they require external financing. We test the overconfidence hypothesis, using panel data on personal portfolio and corporate investment decisions of Forbes 500 CEOs. We classify CEOs as overconfident if they persistently fail to reduce their personal exposure to company-specific risk. We find that investment of overconfident CEOs is significantly more responsive to cash flow, particularly in equity-dependent firms. ER -