Volume clue of future direction

var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));var pageTracker = _gat._getTracker("UA-6162835-1");pageTracker._trackPageview();I follow the Toronto Stock Exchange (TSX) Diversified Metals and Mining Index ($SPTMN) as a proxy for