 Shares of Support.com Inc. SPRT, -16.45 tumbled 16.5 in afternoon trading Friday, after soaring 34.8 over the past two sessions, after the customer and technical support services company said it shareholder approved the deal to be acquired by bitcoin mining company Greenidge Generation Holdings Inc. The stock has now pulled back 40.0 since it closed at a 17-year high of 36.39 on Aug. 30, after a meme-stock like rally that took the heavily shorted stock up 364 in two weeks. We are grateful for our stockholders overwhelming endorsement of the Support.com merger with Greenidge, said Support.com Chief Executive Lance Rosenzweig. 