Osaka Securities Exchange Co., Ltd. (OSE) successfully started "Night Session" for Stock Index Futures and Options trading on July 19, 2011 (trading day of July 20, 2011).
The trading volume of the first month of "Night Session" was as follows.
Trading Volume of the First Month of "Night Session" (Preliminary Estimates)
•The average trading volume of the extended trading hours (23:30 to 3:00 on the next day) was 40,095 units.
•Trading volume ratio to Day Session was 35.1 %.
•Trading volume ratio to Day Session was 60.7 % on August 10, 2011 which hit the record high on a daily basis.
Please refer to the following file for the detail.
Derivatives Trading after the Launch of "Night Session"