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Earnings per share
 3 Months Ended
Mar. 31, 2012
Earnings per share

6. Earnings per share

 

Earnings per share (“EPS”) are computed on a basic and diluted basis. Basic EPS is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. The computation of diluted EPS assumes the issuance of common shares for all potential common shares outstanding during the reporting period and, if dilutive, the effect of stock options using the treasury stock method.

 

The following summarizes information related to the computation of basic and diluted EPS for the three months ended March 31, 2012 and 2011.

 

    Three Months Ended March 31,  
    2012     2011  
Net income attributable to Consolidated Water Co. Ltd. common stockholders   $ 2,342,666     $ 1,993,010  
Less: Preferred stock dividends     (1,657 )     (1,379 )
Net income available to common shares in the determination of basic earnings per common share   $ 2,341,009     $ 1,991,631  
                 
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders     14,569,883       14,556,259  
Plus:                
Weighted average number of preferred shares outstanding during the period     22,292       16,617  
Potential dilutive effect of unexercised options     4,305       25,761  
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders     14,596,480       14,598,637