share price move

BAR and CNJ price drop yesterday was surprising to me given the "Thirsty" activity to come.

Then after close a Guru who we know can influence the market with buy or sell advice comes out with a sell on BAR plus negative comments in general on cobalt stocks.

My question whenever a stock moves either up or down prior to an announcement is why?
In my mind this looks very much like a normal drilling result leak.

Let's face it leaky boats are an unfortuate constant.

I for one have held my cobalt stocks, in fact bought more on the dip.

Just my thoughts, nothing more.
Sally