Argentina-based financial services company Grupo Supervielle S.A. (NYSE: SUPV) has reported its second-quarter results, and investors are not happy. As of 10:45 a.m. EDT on Friday, the stock is down by more than 21%.Current-quarter results failed to meet expectations. Earnings of 2.96 pesos per share (about $0.10) were 57% lower than a year ago.