The CBOT is planning to start trading on Sundays.

Chicago Board of Trade directors voted to open trading for certain financial futures and options from 6 p.m. to 9 p.m. on Sundays beginning Sept. 13, to attract more Japanese business. Those hours coincide with the start of the Monday business day in Japan and East Asia and are “the busiest trading periods of the week in that part of the world,” said Chairman Karsten Mahlmann. The board of trade initiated night futures trading in April.