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Note 7 - Net Income (Loss) Per Share Applicable to Common Stockholders
9 Months Ended
Sep. 30, 2019
Income Statement [Abstract]  
Net Income (Loss) Per Share Applicable to Common Stockholders

NOTE 7 — Net Income (Loss) Per Share Applicable to Common Stockholders

 

The following table sets forth the computation of basic and diluted net income (loss) per share:

  

   Three Months Ended
September 30,
  Nine Months Ended
September 30,
   2019  2018  2019  2018
Numerator:            
Net income (loss)  $94,298   $(45,257)  $225,927   $(408,528)
                     
Denominator:                    
Weighted average shares outstanding used in computing net income (loss) per share:                    
Basic   5,999,487    5,883,109    5,979,715    6,166,017 
Effect of dilutive stock options   317,783    —      256,958    —   
                     
Diluted   6,317,270    5,883,109    6,236,673    6,166,017 
                     
Net income (loss) per share applicable to common stockholders:                    
Basic  $0.02   $(0.01)  $0.04   $(0.07)
Diluted  $0.01   $(0.01)  $0.04   $(0.07)

  

In the three and nine months ended September 30, 2019, 2,128,547 and 2,189,372, respectively, stock options were excluded in the calculation of diluted net loss per share because their effect would be anti-dilutive. In the three and nine months ended September 30, 2018, 2,358,059 stock options were excluded in the calculation of diluted net loss per share because their effect would be anti-dilutive.