On the eve of International Women’s Day, personal finance journalist Jean Chatzky says she worries about a paradox at the heart of women’s investing habits: Women are better at investing than their male counterparts, but they prefer to stash their money, exposing them to greater financial risk. Chatzky says women tend to be more cautious with money than men, but that caution can backfire. “If that means that we’ve got money in the bank instead of money in the market, we’re not doing ourselves...