Orphan play Ultragenyx jumps in trading debut

Ultragenyx Pharmaceutical Inc. (NASDAQ:RARE) gained $21.25 (101%) to $42.25 in its first day of trading on Friday. On Thursday, the Orphan disease company raised $121 million in an IPO through the sale of 5.8 million shares at $21, which valued Ultragenyx at $610.3 million. With Friday's move, the company is now valued at $1.2 billion. ...