TY - JOUR AU - Lowry,Michelle AU - Officer,Micah S. AU - Schwert,G. William TI - The Variability of IPO Initial Returns JF - National Bureau of Economic Research Working Paper Series VL - No. 12295 PY - 2006 Y2 - June 2006 UR - http://www.nber.org/papers/w12295 L1 - http://www.nber.org/papers/w12295.pdf N1 - Author contact info: Michelle Lowry Smeal College of Business Penn State University 312 Business Building University Park, PA 16802 E-Mail: mlowry@psu.edu Micah S. Officer 702F HOH, Marshall School of Business University of Southern California Los Angeles, CA 90089-1427 E-Mail: officer@marshall.usc.edu G. William Schwert William E. Simon Graduate School of Business Admin University of Rochester Rochester, NY 14627 Tel: 585/275-2470 Fax: 585/461-5475 E-Mail: Schwert@schwert.ssb.rochester.edu AB - The monthly volatility of IPO initial returns is substantial, fluctuates dramatically over time, and is considerably larger during "hot" IPO markets. Consistent with IPO theory, the volatility of initial returns is higher among firms whose value is more difficult to estimate, i.e., among firms with higher information asymmetry. Our findings highlight underwriters' difficulty in valuing companies characterized by high uncertainty, and, as a result, raise serious questions about the efficacy of the traditional firm commitment underwritten IPO process. One implication of our results is that alternate mechanisms, such as auctions, may be beneficial, particularly for firms that value price discovery over the auxiliary services provided by underwriters. ER -