BOSTON ( TheStreet) -- Even in a down market, there are winners: Companies that are growing despite macro-economic turbulence. Here's a look at five stocks that hit 52-week highs yesterday as the S&P 500 Index fell 2%, erasing its gain in 2011. They are fast-growth companies that have little correlation with the economic and political woes weighing on other equities. Below is a look at the stocks' performance, fundamentals and outlook.

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5. Examworks Group ( EXAM) is a specialty company providing independent medical examinations, used by insurance companies and employers to determine the impact and legitimacy of a patient's claims. Examworks is based in Atlanta, but also has offices in New York and 27 other locations in the U.S., Canada and the U.K. The company went public in late October with lead book-runners Goldman Sachs, Barclays and Credit Suisse. Its stock has advanced 45% since the initial sale, outperforming U.S. indices. Its shares have already appreciated 31% during 2011.

Examworks' fourth-quarter revenue more than tripled to $54 million. Its sales exceeded analysts' consensus expectations by 2.3%. The vast majority of the revenue increase resulted from inorganic growth. Examworks has purchased U.K. Independent Medical Service, BME Gateway, Royal Medical Consultants and, most recently, MES Group since it went public. The company swung to an adjusted loss of 3 cents a share and a GAAP loss of 20 cents in the latest quarter, but EBITDA multiplied to $10 million. It expects $350 million to $360 million of sales during fiscal 2011.

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