Even I have been shocked by SLV's moves lately. I was caught completely unprepared for it which is fine because it makes a signficant part of my portfolio anyway. Its both industrial and precious, but what is peaking my interest now is that SLV might be leading GLD which is bullish for precious metals anyway. In a bull market SLV will eventually take the lead. Is the beginning of it (unlikely in fact), but it is a concept to keep in mind as it works it's way to the upper resistance.