Editor's Note: TheStreet ratings do not represent the views of TheStreet's staff or its contributors. Ratings are established by computer based on metrics for performance (which includes growth, stock performance, efficiency and valuation) and risk (volatility and solvency). Companies with poor cash flow or high debt levels tend to earn lower ratings in our model. NEW YORK ( TheStreet) -- Sigma-Aldrich Corporation (Nasdaq: SIAL) hit a new 52-week high Tuesday as it is currently trading at $79.36, above its previous 52-week high of $79.32 with 255,500 shares traded as of 3:26 p.m. ET. Average volume has been 669,200 shares over the past 30 days. Sigma-Aldrich has a market cap of $9.49 billion and is part of the basic materials sector and chemicals industry. Shares are up 7.2% year to date as of the close of trading on Monday. Sigma-Aldrich Corporation, a life science and high technology company, develops, manufactures, purchases, and distributes various chemicals, biochemicals, and equipment worldwide. The company has a P/E ratio of 20.7, above the S&P 500 P/E ratio of 17.7.
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