The Daily chart of PANW shows a short term bend in the trend which is common when Giant Buy Side Institutions are in quiet rotation mode to lower inventory, attempting not to disturb price.
Also, Volume Oscillators and Money Flow indicate selling hidden mostly in price that is being carefully controlled.
The stock reports today. This doesn't mean that HFTs have this information nor does it mean that HFTs won't gap it up. It means IF you are holding this stock for a swing trade, risk has increased for a possible run or gap down.