Key Points With so many exchange-traded funds available, investors can easily choose a passive approach. Dollar-cost averaging into positions over time might make sense to gradually build a portfolio. Dedicating a part of the portfolio for picking single stocks is a great way to develop your investing skills. These 10 stocks could mint the next wave of millionaires › The stock market is a wonderful tool to build wealth. Historically, the S&P Index, the popular benchmark, has generated an annualize ...