2. As of noon trading, Quest Diagnostics ( DGX) is up $0.58 (1.0%) to $57.38 on average volume Thus far, 532,920 shares of Quest Diagnostics exchanged hands as compared to its average daily volume of 1.3 million shares. The stock has ranged in price between $56.72-$57.51 after having opened the day at $57.00 as compared to the previous trading day's close of $56.80. Quest Diagnostics Incorporated provides diagnostic testing information services in the United States and internationally. The company operates in two businesses, Diagnostic Information Services and Diagnostic Solutions. Quest Diagnostics has a market cap of $8.9 billion and is part of the health care sector. The company has a P/E ratio of 14.4, below the S&P 500 P/E ratio of 17.7. Shares are down 2.5% year to date as of the close of trading on Tuesday. Currently there is 1 analyst that rates Quest Diagnostics a buy, 2 analysts rate it a sell, and 14 rate it a hold. TheStreet Ratings rates Quest Diagnostics as a buy. The company's strengths can be seen in multiple areas, such as its notable return on equity, good cash flow from operations, expanding profit margins and largely solid financial position with reasonable debt levels by most measures. We feel these strengths outweigh the fact that the company has had sub par growth in net income. Get the full Quest Diagnostics Ratings Report now. Exclusive Offer: Jim Cramer's 'go-to' small/mid-cap guru Bryan Ashenberg only buys stocks he thinks could return 50-100%. See his top picks for 14-days FREE.