Proto Labs (NYSE:PRLB) soars to $26.73 on its first day of trading, up 67.1% from an IPO price...

Proto Labs (NYSE:PRLB) soars to $26.73 on its first day of trading, up 67.1% from an IPO price of $16. The company, a maker of custom prototyping parts for manufacturers, sold 4.3M shares in its offering. According to its S-1, Proto Labs posted revenue of $98.9M (+52% Y/Y) in 2011, and net income of $18M. (previously)