We fi nd that IPO underpricing is positively related to post-IPO growth in sales and EBITDA, but is not signifi cantly related to growth in earnings. Our evidence suggests that accrual reversals or earnings management may cause this inconsistency. We interpret the growth rates of sales and EBITDA as measures of fi rm quality, and conclude that our evidence supports the notion that IPO fi rms with greater underpricing are of better quality. Our tests on analysts’ earnings forecast errors show that analysts are less positively biased in their earnings forecasts for IPO fi rms that have greater underpricing. In this paper we examine the relation between initial public offering (IPO) underpricing and postIPO growth rates of accounting performance variables. Previous research on IPOs suggests that IPO underpricing is related to the quality of the IPO fi rms (Allen and Faulhaber, 1989, Welch, 1989, Grinblatt and Hwang, 1989, and Rock, 1986). If we use growth rates of accounting performance variables (such as earnings) as measures of fi rm quality, then this suggestion implies a positive relation between IPO underpricing and growth rates. Our hypothesis is that IPO fi rms with greater underpricing should have higher post-IPO growth rates of accounting performance variables. However, rather than just concentrate on growth in earnings, we also include growth in EBITDA and growth in sales. Relative to earnings, these latter variables are more diffi cult for managers to manipulate. Thus, to reduce the possible contamination of our analysis by earnings management strategies, we consider the growth rates of earnings, EBITDA, and sales, and how they relate to IPO underpricing. Consistent with our hypothesis, we fi nd that underpricing is positively related to growth in sales and EBITDA in the fi ve years following an IPO. These results suggest that the IPOs with greater underpricing have higher quality. We also fi nd that IPO growth rates in earnings are much lower than the growth rates in sales and EBITDA. Further tests show that this inconsistency is likely caused by earnings management at the time of the IPO, which infl ates earnings initially and thus reduces earnings growth rates in subsequent years. This result suggests that earnings growth rates may not be accurate measures of IPO fi rm quality compared to sales and EBITDA growth rates. We fi nd that the fi rms with greater underpricing experience larger decreases in accruals after the fi rst year. This fi nding implies that earnings management may also reduce the correlation between IPO underpricing and earnings growth rates. We examine the accuracy of analysts’ earnings forecasts to determine how analysts react to the relation between IPO growth rates and IPO underpricing. If analysts are misled by earnings We thank Mark Huson, participants at the 2005 Northern Finance Association Conference, and, in particular, Bill Christie (the Editor) and an anonymous referee for helpful comments and suggestions. The authors gratefully acknowledge the contribution of Thompson Financial for providing earnings forecast data, available through I/B/E/S (Institutional Brokers Estimate System).