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Earnings Per Share
9 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share

Basic net income/(loss) per share is based upon the weighted average number of common shares outstanding during the period. Diluted net income/(loss) per share is based upon the weighted average number of common shares outstanding, including the dilutive effect, if any, of potentially dilutive securities using the treasury stock method.

The Company’s potentially dilutive shares consist of: (i) vested and unvested stock options that are in-the-money, and (ii) unvested RSUs and PSUs.

A reconciliation of the income/(loss) per share data from a basic to a fully diluted basis is detailed below (amounts in thousands, except per share data):
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2019
 
2018
 
2019
 
2018
NET INCOME/(LOSS)
$
47,670

 
$
(70,140
)
 
$
(146,110
)
 
$
(186,871
)
NET INCOME/(LOSS) PER SHARE:
 
 
 
 
 
 
 
Basic
$
0.38

 
$
(0.56
)
 
$
(1.16
)
 
$
(1.49
)
Diluted
$
0.38

 
$
(0.56
)
 
$
(1.16
)
 
$
(1.49
)
SHARES USED IN COMPUTING NET INCOME/(LOSS) PER SHARE:
 

 
 

 
 
 
 
Weighted average basic shares outstanding
126,144

 
125,462

 
125,920

 
125,346

Dilutive securities:
 

 
 

 
 
 
 
Stock option

 

 

 

Unvested RSUs and PSUs
682

 

 

 

Total dilutive securities
682

 

 

 

Weighted average diluted shares outstanding
126,826

 
125,462

 
125,920

 
125,346

 
 
 
 
 
 
 
 
Shares subject to stock options omitted from the calculation of income/(loss) per share as their effect would have been anti-dilutive
5,201

 
3,603

 
4,690

 
3,823

Shares subject to unvested RSUs and PSUs omitted from the calculation of income/(loss) per share as their effect would have been anti-dilutive
1,901

 
1,831

 
2,090

 
761