S&P 500 Movers: MU, IPGP
September 21, 2018 at 10:49 AM EDT
In early trading on Friday, shares of IPG Photonics Corp (IPGP) topped the list of the day's best performing components of the S&P 500 index, trading up 3.7%. Year to date, IPG Photonics Corp has lost about 21.3% of its value.