NEW YORK ( TheStreet) -- Innophos Holdings (Nasdaq: IPHS) is trading at unusually high volume Tuesday with 469,211 shares changing hands. It is currently at four times its average daily volume and trading up $2.26 (+5%) at $46.97 as of 3:12 p.m. ET. Innophos has a market cap of $922.1 million and is part of the basic materials sector and chemicals industry. Shares are up 23.9% year to date as of the close of trading on Monday. Innophos Holdings, Inc., together with its subsidiaries, produces and sells specialty phosphates primarily in North America. The company has a P/E ratio of 15.7, equal to the average chemicals industry P/E ratio and below the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Innophos as a buy. The company's strengths can be seen in multiple areas, such as its compelling growth in net income, robust revenue growth, largely solid financial position with reasonable debt levels by most measures, solid stock price performance and attractive valuation levels. We feel these strengths outweigh the fact that the company shows low profit margins. You can view the full Innophos 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.