Notice how portfolio managers seem to buy when WMT hits a PSR of 0.50.
Perhaps sellers stop selling too, of course. But look at all the red boxes. Those are PSR of 0.50 and below.
Risk appears to be very minimal to buy in the zone when PSR is less than 0.50.
Tim 11:46AM EST 8/19/2014 74.58 last WMT
PS - If you couple this with the "key hidden levels" lines, this chart really comes alive.