时期
买入价
卖出价
收盘价
Mar-15
$58.50
$59.00
$58.75
Apr-15
$57.00
$57.50
$57.25
Q215
$56.25
$56.75
$56.50
Q315
$55.00
$55.50
$55.25
Q415
$54.00
$54.50
$54.25
Q116
$53.53
$54.03
$53.78
Cal16
$53.43
$53.93
$53.68
Cal17
$53.83
$54.33
$54.08