Buck The Trend
  
Whenever you refuse to jump on the bandwagon to follow the latest fad, you are bucking the trend.
This happens in the securities markets, when most stocks in a particular industry or in the entire market are tanking...while one or more other stocks are going gangbusters.
Perhaps a company found a cure for cancer. Or invented a new kind of smart phone that everyone just has to have. Or created the latest and greatest fidget spinner.