A young investor who isn’t afraid of risks would probably want a portfolio with a lot of stocks because stocks can be a very high risk, volatile choice compared to other investment options. The stock market changes every day, and it can turn out great amounts of money, or have no return on the investment at all, Unlike very safe investments where there are set terms and expectations, and money can be expected to be returned (bonds, annuities, mutual funds, etc.). The stock market is mostly good for short term investments to make a lot of money, but they can be also be long term.