The Ozempic maker's stock is dropping fast -- here's why.Shares of Novo Nordisk (NVO -21.38%) are plunging on Tuesday, down 21% as of 2:10 p.m. ET. The drop comes as the S&P 500 (^GSPC) and the Nasdaq Composite (^IXIC) both lost 0.3%.The Danish pharmaceutical giant announced it was cutting its full-year guidance ahead of its upcoming earnings on Aug. 6. The news overshadowed the company's appointment of a new CEO.Novo names new CEO and cuts guidanceOn Tuesday, Novo Nordisk named Mike Doustdar as the company ...