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The following companies, considered value stocks, have annual revenue of more than $500 million, less-than-average valuations, debt that is under 49% of total capital and receive "buy" ratings from TheStreet.com Ratings' proprietary quantitative model, which considers more than 60 factors. They are ordered by their potential to appreciate.

New Jersey Resources ( NJR) provides retail and wholesale energy services to customers in New Jersey and other states from the Gulf Coast to New England and Canada.

The numbers: Fiscal second-quarter revenue declined 20% to $938 million as net income and earnings per share surged 183% to $36 million and 83 cents, respectively. The debt-to-equity ratio remained low at 0.6, but a quick ratio of 0.4 indicates a weak cash position. Margins improved significantly during the quarter, with operating margin climbing to 6.2% and net margin jumping to 3.8%.

The stock: New Jersey Resources has fallen 7% in 2009, in line with the Dow Jones Industrial Average. The stock trades at a price-to-earnings ratio of 13 and offers an attractive 3.4% dividend yield.

UGI Corp. ( UGI) engages in the distribution and marketing of energy products and services in the U.S. and internationally. The company also operates a heating, ventilation, air conditioning and refrigeration business serving customers in the Mid-Atlantic region.

The numbers: Fiscal second-quarter revenue dropped 9.5% to $2.1 billion as net income increased 25% to $158 million and earnings per share improved 24% to $1.45, continuing a trend of positive growth for eight consecutive quarters. A quick ratio of 0.9 indicates a less-than-ideal liquidity position and a debt-to-equity ratio of 1.5 reflects sizable leverage. Operating margin improved to 17% and net margin jumped to 7.4%.

The stock: UGI has climbed 3% in 2009, outperforming the Dow and the S&P 500. Still, the stock trades at a price-to-earnings ratio under 10, indicating a significant discount to the market, and offers a 3.2% dividend yield.

Diamond Foods ( DMND) processes and markets culinary, snack, in-shell and ingredient nuts that are sold through two main product lines: Diamond of California and Emerald Nuts.

The numbers: Fiscal third-quarter revenue ascended 11% to $111 million as net income increased 144% to $2.7 million and earnings per share improved 128% to 16 cents, establishing an eight-quarter growth streak. Operating margin increased to 5.5% and net margin improved to 2.4%. Just $1.5 million of cash and a quick ratio of 0.3 suggest weak liquidity. But a debt-to-equity ratio of 0.7 indicates conservative leverage.

The stock: Diamond has climbed 26% in 2009, outperforming all major U.S. indexes. The stock trades at a price-to-earnings ratio around 19 and pays a low dividend yield of 0.7%.

Enterprise Products Partners ( EPD) is a midstream energy company that provides services to producers and consumers of natural gas, NGLs, crude oil and petrochemicals in the U.S., Canada and the Gulf of Mexico.

The numbers: First-quarter revenue fell 40% to $3.4 billion as net income weakened 13% to $225 million and earnings per share fell 20% to 41 cents. A quick ratio of 0.6 and a debt-to-equity ratio of 1.5 indicate a less-than-ideal financial position. However, margins improved significantly, with operating margin climbing to 11% and net margin jumping to 6.6%.

The stock: Enterprise Products has climbed 24% in 2009, outperforming all major U.S. indexes. Yet, at its current price, the stock still offers a cash distribution yield of 8.3%. Cash distributions are taxed differently than dividends.

Village Super Market ( VLGEA) operates a chain of ShopRite supermarkets in the U.S.

The numbers: Fiscal third-quarter revenue increased 7% to $293 million as net income increased 25% to $6.3 million and earnings per share climbed 24% to 47 cents. Same-store sales, a gauge of year-over-year improvement, jumped more than 7%. The company has a modest $36 million debt-load and over $47 million of cash, which works out to a quick ratio of 0.8 and a debt-to-equity ratio of 0.2.

The stock: Village Super Market has climbed 1% in 2009 and is up 11% from its March low. The stock trades at a price-to-earnings ratio of 17 and offers a 3% dividend yield.

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A rating can be viewed for any stock through our screener stock rating screener. Each rating is derived from a variety of fundamental and pricing figures and represents our opinion of risk-adjusted performance relative to a 5,000+ stock coverage universe. However, the rating does not incorporate all factors that can alter a stock's performance, such as corporate or industry events, technology innovations and shifts in competitive dynamics.