Income Per Share

9 Months Ended

Sep. 30, 2013

8. Income per Share

The following is a summary of basic and diluted income per share (in thousands, except share and per share amounts):



	Three Months Ended September 30,		Nine Months Ended September 30,
	2013	2012	2013	2012

Net income available to common stockholders—basic	$ 138,872	$ 45,615	$ 228,606	$ 126,847

Add: Interest and amortization of debt issuance costs on 2029 Debentures	4,050	-	-	-
Net income available to common stockholders—diluted	$ 142,922	$ 45,615	$ 228,606	$ 126,847

Weighted average shares outstanding—basic	128,427,444	122,026,421	127,771,419	112,995,512
Potentially dilutive common shares:
Stock options	58,150	76,774	64,767	74,462
Unvested incentive units	132,195	250,316	119,583	205,247
Effect of dilutive 2029 Debentures	6,683,976	-	-	-
Weighted average shares outstanding—diluted	135,301,765	122,353,511	127,955,769	113,275,221

Income per share:
Basic	$ 1.08	$ 0.37	$ 1.79	$ 1.12
Diluted	$ 1.06	$ 0.37	$ 1.79	$ 1.12

We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive:




	Three Months Ended September 30,		Nine Months Ended September 30,
	2013	2012	2013	2012
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc.	2,549,749	4,345,574	2,515,964	4,346,586
Potentially dilutive 2029 Debentures	-	6,514,812	6,628,489	6,471,282
Potentially dilutive Series C Cumulative Convertible Preferred Stock	-	-	-	1,087,398
Potentially dilutive Series D Cumulative Convertible Preferred Stock	-	4,219,384	629,389	4,309,978
Potentially dilutive Series E Cumulative Redeemable Preferred Stock	5,251,059	4,151,146	4,853,976	4,045,501
Potentially dilutive Series F Cumulative Redeemable Preferred Stock	3,330,210	2,632,647	3,078,381	1,243,998
Potentially dilutive Series G Cumulative Redeemable Preferred Stock	4,153,208	-	2,918,921	-
	15,684,535	21,863,563	20,625,120	21,504,743

The entire disclosure for earnings per share.