PIROA and BSR, ABU

I cannot understand why one stock jumps and another wallows (BSR). A stockbroker made a strong case for PIR and away it went. But BSR has been producing decent drilling results. Yet, it continues to tumble.

I won't be buying any PIROA as it has bolted. But why BSR and ABU continues to tumble? That I cannot comprehend. At least with ABU, I am onto profit. So this evening, I will put a buy on BSR at 3.8c.