时期

买入价

卖出价

收盘价

Nov-16

$63.40

$63.60

$63.50

Dec-16

$62.00

$62.35

$62.18

Q117

$59.50

$59.90

$59.70

Q217

$55.90

$56.20

$56.05

Q317

$52.90

$53.30

$53.10

Q417

$50.50

$51.00

$50.75

Cal17

$54.75

$55.10

$54.93

Cal18

$46.25

$46.75

$46.50