NEW YORK ( TheStreet) -- 51job (Nasdaq: JOBS) is trading at unusually high volume Friday with 550,466 shares changing hands. It is currently at four times its average daily volume and trading up $7.98 (+14.1%) at $64.53 as of 2:06 p.m. ET. Fifty-onejob has a market cap of $1.6 billion and is part of the services sector and diversified services industry. Shares are up 14.8% year to date as of the close of trading on Thursday. Fifty-onejob, Inc. provides integrated human resource services to employers and job seekers primarily in the Peoplea s Republic of China. The company has a P/E ratio of 44.4, above the average diversified services industry P/E ratio of 44.3 and above the S&P 500 P/E ratio of 16.9. TheStreet Ratings rates 51job as a buy. The company's strengths can be seen in multiple areas, such as its largely solid financial position with reasonable debt levels by most measures, robust revenue growth, impressive record of earnings per share growth, compelling growth in net income and notable return on equity. We feel these strengths outweigh the fact that the company is trading at a premium valuation based on our review of its current price compared to such things as earnings and book value. You can view the full 51job Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center. Interested in other stocks that are rising on unusually high volume? Get free SMS text alerts sent to you when the action happens by texting HVUP to 95370 or select from multiple alert options.