9. Earnings Per Share

9 Months Ended

Sep. 30, 2013

9. (LOSS) EARNINGS PER SHARE

Basic (loss) earnings per share is computed by dividing net (loss) income attributable to Bio-Rad by the weighted average number of common shares outstanding for that period. Diluted (loss) earnings per share takes into account the effect of dilutive instruments, such as stock options and restricted stock, and uses the average share price for the period in determining the number of potential common shares that are to be added to the weighted average number of shares outstanding. Potential common shares are excluded from the diluted (loss) earnings per share calculation if the effect of including such securities would be anti-dilutive. For the three months ended September 30, 2013, net loss per basic share was the same as net loss per diluted share because all potentially dilutive shares were anti-dilutive due to the net loss for the period.

The weighted average number of common shares outstanding used to calculate basic and diluted (loss) earnings per share, and the anti-dilutive shares that are excluded from the diluted earnings per share calculation are as follows (in thousands):



	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2013	2012	2013	2012
Basic weighted average shares outstanding	28,603	28,312	28,545	28,255
Effect of potentially dilutive stock options and restricted stock awards	—	333	325	354
Diluted weighted average common shares	28,603	28,645	28,870	28,609
Anti-dilutive shares	416	94	95	106

- Definition

The entire disclosure for earnings per share.

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