On January 14th, the SEC granted immediate effectiveness to the Chicago Board Options Exchange's proposal to designate the time period from 8:30 a.m. CT until 3:00 p.m. CT as "CBSX Regular Trading Hours" for stock, IPR and IPS transactions, and to make certain corresponding changes. CBSX also proposes to designate the time periods from 8:00 a.m. CT until 8:30 a.m. CT and 3:00 p.m. CT until 3:30 p.m. CT as "CBSX Extended Trading Hours," and to make certain corresponding changes. The change would be effective as of February 1, 2010. Comments should be submitted on or before February 11, 2010. SEC Release No. 34-61349.