[EquisMetaStock Group] How to check they are currently trading?

["chellester2002" <rego2@xxxxxxxxxxx>]

I have lots of equities in my database that are quite old and are no 
longer trading, or are halted etc.  I don't want to just delete them 
(because I can't be bothered) but they are also still useful for 
backtesting historical data - but I don't want them to come up when I'm 
doing explorations.  Apart from going through and keeping track of 
current traded shares etc and removing them from the explorations 
securities list, what formula can I use to add to the exploration to 
make sure that it was traded at least in the last week - using todays 
date (or the date I have selected for the exploration).

I'm sure it must be relatively easy, but I can't seem to find it in the 
help.

Thanks


------------------------------------

Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/equismetastock/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/equismetastock/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:equismetastock-digest@xxxxxxxxxxxxxxx 
    mailto:equismetastock-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    equismetastock-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/