Bravo19, PTRZ is an empty dirty shell that changed its symbol from ASWD to PTRZ. It is not a subsidiary of Petro America Kansas, did not merge with Petro America Kansas, and is not owned by Petro America Kansas. Documentation: http://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001122771&owner=exclude&count=40 Do not worry, the SEC will explain it all to those who still do not understand. Good luck.