According to the ETF Finder at ETF Channel, DGI makes up 2.70% of the SPDR S&P Aerospace & Defense ETF ( XAR ) which is trading up by about 1.2% on the day Friday.DGI operates in the Communications Services sector, among companies like AT&T Inc ( T ) which is off about 0.5% today, and China Mobile Limited ( CHL ) trading higher by about 0.9%. Below is a three month price history chart comparing the stock performance of DGI, versus T and CHL.