June 2001, Mutual Funds Magazine - Learn Your Risk

"Anyone who's been in the market lately knows something about risk. But for a scientific take on how risk can impact your portfolio, do some experiments at PortfolioScience.com. The site calculates the historical volatility of a stock or fund (or portfolio), comparing it to that of the S&P500 and other indexes. We plugged in a tech-heavy (but fairly diversified) portfolio and learned that it stood to lose 6.7% on a bad day, making it twice as risky as the S&P."