服务器经常断，仅供参考，SPDR是在美国每天收盘后更新持仓数据，所以算到北京时间第二天了。
12,1,1286.6
12,2,1293.89
12,3,1293.89
12,4,1298.03
12,5,1298.03
12,6,1298.03
12,7,1298.03
12,8,1298.03
12,9,1297.73
12,10,1295.3
12,11,1293.78
12,12,1289.83
12,13,1289.83
12,14,1289.83
12,15,1289.83
12,16,1286.19
12,18,1298.94
12,19,1298.94
12,20,1298.94
12,21,1298.94
12,22,1298.03
12,23,1298.03
12,24,1288.62
12,25,1284.97
12,27,1284.97
12,28,1284.97
12,29,1284.06
12,31,1280.72