On March 2nd, the SEC granted immediate effectiveness to the Chicago Board Options Exchange's proposal to amend its rule related to multi-class broad-based index option spreads to include options on index-linked securities (also known as exchange-traded notes) within the definition of an eligible "broad-based index option." Comments should be submitted within 21 days after publication in the Federal Register, which is expected during the week of March 8. SEC Release No. 34-61628.