Kim 7,943 Report post Posted October 25, 2013 Those who have been trading options on major indexes like RUT, SPX or NDX know that those options behave differently from regular options. They usually stop trading on Thursday however the settlement value is not determined until the market opens the following day (Friday). (SPX weekly options are an exception, they stop trading on Friday, so the following article is relevant mostly to RUT and NDX options). But that's not all. Click here to view the article Share this post Link to post Share on other sites
