$1.$ Why is underpricing not a great concern with bond offerings?

Use the following information to answer the following questions:

In September $2018,$ ticketing and events company Eventbrite went public. Assisted by investment banks Goldman Sachs, JP Morgan, and others, Eventbrite sold $10$ million shares at $$23$ each, thereby raising a total of $$230$ million. By the end of the first day of trading, the stock jumped to $$36\mathrm{.}50$ per share, down from a high of $$39\mathrm{.}30.$ Based on the end$-$of$-$day numbers, Eventbrite shares were apparently underpriced by about $$13\mathrm{.}50$ each, meaning that the company missed out on an additional $$135$ million.