时期买入价卖出价收盘价Oct-16$56.65$56.95$56.80Nov-16$56.25$56.50$56.38Q416$56.00$56.20$56.10Q117$52.75$53.00$52.88Q217$49.75$50.00$49.88Q317$47.50$47.75$47.63Cal17$48.88$49.19$49.04Cal18$43.00$43.50$43.25