For example, someone in their 30s saving for retirement has a long time horizon and may have a higher risk tolerance.
Your asset allocation can shift over time. For example, someone in their 30s saving for retirement has a long time horizon and may have a higher risk tolerance. As a result their portfolio may contain mostly stocks. As that person grows older and nears retirement, their portfolio may shift to contain more bonds and cash, which are typically less risky and less likely to lose value in the short-term.