Top 4 Mid-Cap Stocks In The Medical Laboratories & Research Industry With The Highest Operating Margin (LH, DGX, PPDI, CVD)

Below are the top mid-cap medical laboratories & research stocks on the NYSE and the NASDAQ in terms of operating margin. The trailing-twelve-month operating margin at Laboratory Corp. of America Holdings LH is 20.02%. LH's ROE for the same period is 24.61%. The trailing-twelve-month operating margin at Quest Diagnostics Incorporated DGX is 17.61%. DGX's PEG ratio is 1.12. The trailing-twelve-month operating margin at Pharmaceutical Product Development Inc PPDI is 14.08%. PPDI's PEG ratio is 1.05. The trailing-twelve-month operating margin at Covance Inc CVD is 9.33%. CVD's revenue for the same period is $2.06 billion. Trading Ideas.