EchoStar (NASDAQ:ECHO) shares got a boost Tuesday after UBS resumed coverage of the stock with a Buy rating and a $150 price target, sending the stock up 4.2%. The UBS upgrade reflects EchoStar's transformation from wireless operator to investment vehicle, following the company's sale of 75-80% of its spectrum portfolio for roughly $43 billion.EchoStar is set to hold a 2% stake in SpaceX, equal to about 262 million shares, once its pending spectrum transaction closes.