Back 5 years, nothing close until a start on Thurs, then Friday: http://www.nasdaq.com/symbol/prni/historical
Best watch scenario's are usually an extreme 10day alert, which in this case wasn't much, but fact. Then if followed by another... well again check for trading patterns.
Since I started this board I'll put what the heck I wanna... lol
GL finding something http://www.nasdaq.com/symbol/prni/sec-filings
All a very good sign, why? You Know!! LoL
Who knows that could have been my buy on Friday... x10LoL