Luis...agree it was a crazy settlement...its been a long time since it was that far out of whack. When I was trading SPX I got burned a number of times with this type of bogus SET number, I truely believe something is fishy about the whole SET business. That is why I switched to futures options...although they have their own crazyness at least settlement is much more transparent. When you trade the SPX you absolutely, without fail must close/roll out on Thurs by EOD. sorry for the loss hope it wasn't too bad.
Its the same number for the futures SET and SOQ are the same.