On Assignment Inc. on Monday said that it will transfer listing of its common stock from the Nasdaq Stock Market to the New York Stock Exchange beginning Aug. 31.

The company will retain its current ticker “ASGN.” The Calabasas staffing company originally focused on health care and biotech firms but in recent years expanded into the information technology and engineering industries.

Shares, which closed at $16.59 on Thursday, have gained 51 percent since the beginning of the year