When the pps traded within the previous day's high (without going higher ) and closed lower that was a technical move that portends a lower pps.
That is a very reliable technical indicator.
These things go up and down, certainly one of the reasons is short interest. I would not worry about day to day moves, however, if you were interested in trading and not investing, selling when that technical event occurred was the way to go.
6 weeks until the next conference with news is long enough for the pps to base, looking for a move up into that conference. Now, there has NEVER been a conference, after which, the pps continued its general upward trend. I wonder if that will happen this time, only time will tell.