OMX Nordic Exchange in Stockholm will implement a change of expiry day for OMXS30 contracts. Currently the expiry day is the fourth (4th) Friday in the expiry month, after the change the expiry day will be the third (3rd) Friday in the expiry month. During the transition period from fourth Friday expiry to third Friday expiry there will be no changes to outstanding series. The first third Friday expiry will be series expiring in May 2008 and the first listed series with third Friday expiry will be series expiring in July 2008, because they have a maturity of twelve months, which are listed as of Monday July 23, 2007.
The reason behind the change of expiry day is because OMX Nordic Exchange in Stockholm finds that a great majority of the market participants are for such a change. Below is a schedule of coming expiry months showing which expiry months that will have fourth Friday expiry and which will have third Friday expiry. Time of expiry and method of calculating expiration settlement fix will take place according to today’s standards.
