TheStreet.com Ratings: Top 10 Mid-Cap Stocks

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.

This list, updated daily, is based on data from the close of the previous trading session. Today, we look at mid-cap stocks. These are stocks of companies that have market capitalizations of between $500 million and $10 billion that rank near the top of all stocks rated by our proprietary quantitative model, which looks at more than 60 factors.

In addition, the stocks must be followed by at least one financial analyst who posts estimates on the Institutional Brokers' Estimate System. The stocks are ordered by their potential to appreciate.

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Today begins with real estate and money management service company Jones Lang LaSalle(JLL Quote), which has had a buy rating since March 2005. The company shows impressive strengths, including a noteworthy return on equity (a sign of internal strength), impressive net operating cash flow and a pattern of EPS growth reflected in the impressive appreciation of its share price.

With positive investment measures across the board, the company's low profit margins are not a major concern.

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Oil and gas transportation company Plains All American Pipeline(PAA Quote) has had a buy rating since March 2005. The company shows impressive strengths, including positive stock price appreciation and a largely solid financial position with reasonable debt levels by most measures.

These strengths outweigh the company's subpar net income growth.

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