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 March 31,
	2019		2018
Net income available to common stockholders	$	95,869	$	86,298
Weighted average shares outstanding—basic	207,809,383		205,714,173
Potentially dilutive common shares:
Unvested incentive units	323,064		302,016
Forward equity offering	221,448		—
Market performance-based awards	172,354		491,287
Weighted average shares outstanding—diluted	208,526,249		206,507,476
Income per share:
Basic	$	0.46	$	0.42
Diluted	$	0.46	$	0.42

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



	Three Months Ended March 31,
	2019	2018
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc.	9,229,911	8,295,287
Potentially dilutive Series C Cumulative Redeemable Perpetual Preferred Stock	1,738,781	1,967,430
Potentially dilutive Series G Cumulative Redeemable Preferred Stock	2,155,992	2,439,505
Potentially dilutive Series H Cumulative Redeemable Preferred Stock	3,159,382	3,574,840
Potentially dilutive Series I Cumulative Redeemable Preferred Stock	2,158,515	2,442,359
Potentially dilutive Series J Cumulative Redeemable Preferred Stock	1,722,138	1,948,598
Potentially dilutive Series K Cumulative Redeemable Preferred Stock	358,008	—
Total	20,522,727	20,668,019