Leveraging the availability of three years of pre-IPO data and related vs unrelated-party customer information for Chinese firms, we examine the impact of customer strategic alliances (CSA) on IPO underpricing from 2007 to 2015. Our core findings suggest that IPO firms with CSAs have less IPO underpricing than those without such a relationship. The decrease in underpricing is more salient for IPO firms that have non-related-party customers. Additional analysis suggests that the core findings are primarily driven by firms with good information environment pre-IPO, including high audit quality, high analyst following, and low earnings management. We interpret the results as indicating that a good pre-IPO information environment enhances the credibility of CSA relationships and signals high IPO quality. Furthermore, we document that a CSA relationship has a positive impact on an IPO firm's post-IPO performance, especially when the firm has non-related-party customers. Overall, CSAs reduce IPO underpricing and enhance IPO returns post-IPO.

We examine the relation between voluntary disclosure and the value of analysts' research by studying the change in the informativeness of analysts' research after managers stop providing quarterly guidance to investors. We find that the market reaction to analysts' recommendation revisions increases significantly after guidance stoppage, controlling for confounding factors as well as for firm and time fixed effects. The increase in market reaction is greater for firms with more opaque information environments and for firms that previously provided disaggregated guidance. Further, the effect of guidance stoppage on the informativeness of analysts' research reverses after managers resume guidance. Finally, textual analyses of analysts' reports before and after guidance stoppage reveal that analysts issue longer, more frequent, and more detailed reports that convey more forward‐looking information after stoppages. These findings collectively shed light on the relation between the supply of voluntary disclosure and the value that sell‐side analysts add to price discovery in capital markets.