Each weekday, TheStreet.com Ratings compiles a list of the top 10 stocks in five categories -- fast-growth, all-around value, large-cap, mid-cap and small-cap -- and publishes these lists in the Ratings section of our Web site. The top 10 rankings are based on our ratings, which assess risk-adjusted returns as well as other criteria specific to the type of stock. We update the lists at the end of the business day on the basis of information available at the close of the previous trading session. Today we'll look at fast-growth stocks. These are stocks that rate in the top 10% of TheStreet.com Ratings' coverage universe, and are projected to increase revenue and profit at least 12% in the coming year. In addition, the stocks must be followed by at least one financial analyst who posts earnings estimates on IBES. Atlantic Tele-Network ( ATNI), which provides wireless and wireline telecommunications services in the Caribbean and North America, has been rated a buy since December 2004. TheStreet.com Ratings' positive outlook on the stock is primarily influenced by the company's acquisition-led growth strategy and its focus on under-served markets. Atlantic Tele-Network's financial performance in the third quarter of its fiscal year 2006 was also encouraging. The principal risks to our rating include termination of Atlantic Tele-Networks' exclusive right to provide wireline local and long-distance telephone services in Guyana, any decline in volume of international long-distance calls, any adverse regularity developments and increasing competition. Precision Castparts Corp. ( PCP) manufactures metal components and products for aerospace and industrial gas turbine applications. It has been rated a buy since December 2004. The company is expected to benefit from its recent acquisitions and capacity expansion plans. This, together with higher defense spending worldwide, may allow it to repeat its recent strong financial performance. TheStreet.com Ratings believes increased defense spending, combined with the ongoing rebound in aviation, could increase the demand for Precision's products. However, because the company's top-line growth is dependent on the aerospace industry, any slowdown in the sector could lead to reduced demand for parts, components and supplies. Also, fluctuation in the prices of basic materials and the company's inability to successfully integrate acquisitions are a concern.