Fiscal Quarter

First

Second

Third

Fourth

(In millions, except for per share data)

Year Ended December 31, 2020:

Revenue (less agency commissions)

$

534

$

451

$

604

$

792

Operating income

124

65

212

351

Net income (loss) attributable to common stockholders

40

(2

)

109

211

Basic net income (loss) attributable to common stockholders per share

$

0.41

$

(0.02

)

$

1.15

$

2.24

Diluted net income (loss) attributable to common stockholders per share

$

0.40

$

(0.02

)

$

1.14

$

2.22

Year Ended December 31, 2019:

Revenue (less agency commissions)

$

518

$

508

$

517

$

579

Operating income

40

119

139

180

Net (loss) income attributable to common stockholders

(31

)

31

46

81

Basic net (loss) income attributable to common stockholders per share

$

(0.31

)

$

0.31

$

0.46

$

0.82

Diluted net (loss) income attributable to common stockholders per share

$

(0.31

)

$

0.31

$

0.46

$

0.81