Karel Vortex also starts with the difference between PC and SV. This difference is multiplied by the buy (sell) factor. Excuse me if I'm wrong but nowhere in your post or the origonal post is the <b>b/s factor</b> explained. Jibes AIM Re Bal at: <A HREF="http://jibes0.tripod.com/trendseeker.html" target="_new">http://jibes0.tripod.com/trendseeker.html</A>