The bigger the potential gain, the greedier we feel, which is why frothy markets are so dangerous. When we see investments delivering unsustainable returns, our capacity for rational judgement quickly ...

Zweig recently suggested that it might be time to consider the merits of small-cap stocks. I added a modest exposure to small-cap stocks to my portfolio a few months ago so I thought it would be ...

WSJ 'Intelligent Investor' Jason Zweig profiles personal finance expert Suze Orman and her business partner in producing a lucrative monthly newsletter. Photo: KAREN BLEIER/AFP/ Getty Images.