Net Income per Share

6 Months Ended

Jun. 30, 2011

Net Income per Share [Abstract]

Net Income per Share

5. Net Income per Share

     The following table sets forth the computation of basic and diluted income per share for the three and six months ended June 30 (in thousands, except per share amounts):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2011		2010		2011		2010
Numerator:
Net income attributable to Vicor Corporation	$	3,066	$	4,747	$	7,084	$	6,699
Denominator:
Denominator for basic income per share-weighted		41,798		41,686		41,785		41,676
average shares (1)
Effect of dilutive securities:
Employee stock options (2)		89		66		88		50
Denominator for diluted income per share — adjusted weighted-average shares and assumed conversions		41,887		41,752		41,873		41,726
Basic income per share	$	0.07	$	0.11	$	0.17	$	0.16
Diluted income per share	$	0.07	$	0.11	$	0.17	$	0.16

(1)

Denominator represents weighted average number of Common Shares and Class B Common Shares outstanding.

(2)

Options to purchase 231,687 and 368,452 shares of Common Stock for the three months ended June 30, 2011 and 2010, respectively, and options to purchase 235,439 and 512,859 shares of Common Stock for the six months ended June 30, 2011 and 2010, respectively, were not included in the computation of diluted income per share because the options’ exercise prices were greater than the average market price of the Common Stock and, therefore, the effect would be antidilutive. During the third quarter of 2010, the Company granted 1,243,750 stock options that will vest upon certain performance conditions (See Note 4). The Company did not meet the performance conditions as of June 30, 2011, and therefore, the options were excluded from the calculation of diluted income per share.