California Nanotechnologies is trading at $0.28, down 7.57%, amid weaker profitability in its mixed October 27 results. - Revenue rose 23% year over year, but the quarterly net loss was US$359,148, compared with net income a year earlier; gross margin fell to 51% from 62%. - The report cited more than US$2.5 million in Q3 purchase orders and approximately US$1.0 million in cash. - No confirmed October 28 announcement explaining the move or trading-volume data was found.