SSE Composite Index decreased 1.29% to 2705.16 last trading day. Shenzhen Composite Stock Index decreased 2.08% to 8422.84 last trading day. Growth Enterprise Index decreased 2.75% to 1440.80 last trading day. The turnover of both Shanghai and Shenzhen was 291.11 billion CNY in last trading day, and it slightly increased relative to the previous trading day).
In the view of sectors, 1 of 28 SWS Level-1 sectors increased while 27 sectors dropped. Specifically, Banks(0.57%), Construction Decoration Materials(-0.07%) and Construction Materials(-0.39%) did the best performance while Leisure Services (-3.86%), Pharmaceutical Biology(-3.56%) and Agriculture, Forestry, Animal Husbandry and Fishery(-3.55%) did the worst performance.
As for the option contracts of 50ETF: the total turnover during 2018-08-06 was 1580144 lots (changed 21.14%) and 790146 lots for call, 789998 lots for put, currently the total open interest is 1808218 (changed 4.66%), and 1105131 for call, 703087 for put. The put/call ratio in turnover is 0.9998 and put/call ratio in open interests is 0.6362.

China Securities Journal reported that after the central bank raised the foreign exchange risk reserve ratio, the RMB exchange rate against the USD rebounded sharply. On August 6th, the spot price of onshore RMB against the USD rose more than 600 points in early trading, breaking up 6.80, and the biggest increase in two days was nearly 1000 points. The market people point out that policy regulation helps to narrow the fluctuation of RMB. In the second half of the year, it is a big probability event to move into the "stable lane". However, it should be noted that the exchange rate expectation has not been reversed. The logic of the change of the RMB exchange rate trend has not yet been formed under the background of the economic policy differentiation between China and United States.

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