NEW YORK ( TheStreet) -- Shares of On Assignment (Nasdaq: ASGN) were gapping up Wednesday morning with an open price 26.1% higher than Tuesday's closing price. The stock closed at $13.68 Tuesday and opened today's trading at $17.25. The average volume for On Assignment has been 214,400 shares per day over the past 30 days. On Assignment has a market cap of $441.3 million and is part of the services sector and diversified services industry. Shares are up 27.5% year to date as of the close of trading on Tuesday. On Assignment, Inc., a diversified professional staffing firm, provides flexible and permanent staffing solutions in the United States, Europe, Canada, Australia, New Zealand, and Bermuda. It operates in four segments: Life Sciences, Healthcare, Physician, and IT and Engineering. The company has a P/E ratio of 22.3, below the average diversified services industry P/E ratio of 149.6 and above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates On Assignment as a buy. The company's strengths can be seen in multiple areas, such as its robust revenue growth, solid stock price performance, impressive record of earnings per share growth, attractive valuation levels and good cash flow from operations. We feel these strengths outweigh the fact that the company shows low profit margins. You can view the full On Assignment Ratings Report. Get more investment ideas from our investment research center. Interested in other stocks that are gapping up? Get free SMS text alerts sent to you when the action happens by texting UP to 95370 or select from multiple alert options.