I believe it is currently the $TNX, the 10yr, because the 30-yr is no longer available. <A HREF="http://stockcharts.com/def/servlet/SC.web?c=$TNX,uu[h,a]waclyiay[df][pb50!b200][vc60][iUa12,26,9!Lp14,3,3]&pref=G" target="_blank">http://stockcharts.com/def/servlet/SC.web?c=$TNX,uu[h,a]waclyiay[df][pb50!b200][vc60][iUa12,26,9!Lp1...</A> On this chart you can clearly see the June '03 low that was the low point for mortgage interest rates as well. Newly