The prospects of the latter two companies looked better following the European pharmaceutical's new clinical trial readout.In the pharmaceutical world, it's never good for a company to stumble in a hot therapeutic area, especially if it has some determined rivals competing in the same segment.That was the dynamic behind Wegovy and Ozempic developer Novo Nordisk's (NVO -5.46%) Friday stumble on the stock exchange --following its latest news from the lab -- and the gains enjoyed that day by up-and-coming Viki ...