U uptickk Nov 24, 2010 #1 SPX is switching from Friday AM SET to Friday PM settlement. https://www.cboe.org/publish/RegCir/RG10-112.pdf
SPX is switching from Friday AM SET to Friday PM settlement. https://www.cboe.org/publish/RegCir/RG10-112.pdf
M MTE Nov 24, 2010 #2 These are only to replace the current weekly options not the standard monthly ones.
