Using a sample of 4,892 IPOs in the United States from 1990 to 2019, we establish that the level of social capital in the county of the IPO firm’s headquarters is negatively associated with the level of IPO underpricing. The relation holds for a range of robustness tests, including those...

Using a large sample of 13,674 initial public offerings (IPOs) from 37 countries, we find that trading rules on market manipulation reduce IPO underpricing. The effect is weaker for IPOs certified by reputable intermediaries, in countries with greater shareholder rights protection, better...