Wallace Publishing recently completed its IPO. The stock was offered at a price of $$15\mathrm{.}00$ per share. On the first day of trading, the stock closed at $$20\mathrm{.}00$ per share. What was the initial return on Wallace? Who benefited from this underpricing? Who lost, and why?

What was the initial return on Wallace?

The initial return was

$\%.($Round to one decimal place.$)$