With the second-quarter earnings season coming into full swing, investors are eager to find out how their investments performed in the most recent quarter compared with expectations. And given the uncertain of both the domestic and internationally economies, now more than ever, a company's forward-looking sales and revenue guidance will be essential to how investors treat the report.

Here's a rundown of some notable recent earnings reports, including those from Alcoa ( AA), Hot Topic ( HOTT) and Mosaic ( MOS).

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