What are shares, exactly?

Financial columnist and author Mary Holm answers two listeners' questions about shares and warns listeners about the dangers of insider tradingFinancial columnist and author Mary Holm answers two listeners' questions about shares. The first is a long and thoughtful query about why a company should care when one person buys its shares from another person. The second is about how you should go about picking which shares to invest in.Mary also warns listeners about the dangers of insider trading, as shown in a recent court case.Go to this episode on rnz.co.nz for more details