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NEW YORK ( TheStreet) -- Alexion Pharmaceuticals (Nasdaq: ALXN) hit a new 52-week high Monday as it is currently trading at $87.98, above its previous 52-week high of $87.63 with 1.5 million shares traded as of 2:55 p.m. ET. Average volume has been 1.2 million shares over the past 30 days. Alexion has a market cap of $13.68 billion and is part of the health care sector and drugs industry. Shares are up 18.5% year to date as of the close of trading on Friday. Alexion Pharmaceuticals, Inc., a biopharmaceutical company, engages in the discovery, development, and commercialization of biologic therapeutic products in the United States, Europe, Latin America, Japan, and the Asia Pacific. The company has a P/E ratio of 93.3, above the average drugs industry P/E ratio of 92.5 and above the S&P 500 P/E ratio of 17.7.