How Stocks Work Full Size Version Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents Events on Wall Street Can successful investors predict changes in the markets? Some can but others miss the market’s signals. Rebalancing Your Portfolio Over time, different investments' performances can shift a portfolio’s intent and risk profile. Rebalancing may be critical. 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.