UnitedHealth's numbers for the most recent quarter painted a conflicting picture, with revenues rising on a year-over-year (YOY) basis and surpassing Street estimates, but earnings declining from the previous year and missing the same. Revenues of $111.62 billion denoted an annual growth of 12.9%. Optum, which made up just over 60% of the quarterly revenues of the company, saw its sales rise by 6.8% from the previous year to $67.2 billion.This brings us to the question: Is the UNH stock a suitable investmen ...