BOSTON ( TheStreet) -- Alcoa ( AA), the largest U.S. producer of aluminum, kicks off the quarterly earnings-reporting season a week from Thursday. Traders in stocks under $5 also have their plates full next week with releases.

Already this week, Zale ( ZLC) reported a smaller-than-expected loss of 89 cents a share in its fiscal fourth quarter, although the stock fell more than 5% after the release. Other stocks trading at less than $5 will likely see similar volatile reactions based on earnings results.

TheStreet narrowed the list of companies investors should be watching to 10, ranked by market value, based on Bloomberg's earnings-release schedule. The list includes stocks currently trading on the New York Stock Exchange, Nasdaq and the or NYSE Amex.

10. IsoRay ( ISR)

Company Profile: IsoRay was founded in 1998 to develop isotopes for use in the medical treatment of malignant diseases. The company provides treatment for all solid tumor applications using Cesium-131.

Earnings Reporting Date: Oct. 7 (unconfirmed)

Share Price: $1.09 (Sept. 27 close)

Total Return 2010: 27%

Analyst Ratings: The two research firms with coverage of IsoRay are split between a "buy" and a "hold" rating. The mean of the two estimates for the fiscal fourth quarter calls for a loss of 4 cents a share on revenue of $1.31 million, according to Thomson Reuters.

Income Statement: In the fiscal third quarter ended March 31, IsoRay posted an operating loss of $1.09 million and revenue of $1.2 million. During the quarter, IsoRay said it focused its resources on improving sales while retaining the necessary administrative infrastructure to increase the level of demand for the company's product.

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