Someone must have dumped a good quantity of PZE shares just after the close in time for the 4th July weekend, enough to justify a 6% drop while PBR remained stable (the two usually track within limits). Either a hedge fund needed to cash in or some other reason perhaps related to the Argentinian patient in general. Despite its low P/E and the fact that dividends were paid in the past PZE clearly is a risky investment with most pointers set to "sell"