You make a good point as does DFL in his comment that this is not a traders rally.
BDL has more rebound potential than some of its competitors because it was just about at crisis point before the market started to warm. (Ausdrill and Swick are, for example, also on upward trends... but their price to "anticipated" earnings ratios are more towards industry averages)
There appears to have been a large institutional seller coupled with one or two institutional (or otherwise large) buyers and this triggered the rally.
It's not surprising that volume is ebbing off a bit as I type . At some point the key buyers and sellers will be happy with their respective positions for the time being. But who knows (except them)?
I am holding to my previous SP valuation of 20c + because the market for BDL services is returning to normal.
