Dynamic Strategies for Asset Allocation
As risky assets (e.g., stocks) fluctuate in value, the value of a portfolio containing them may change, as may their allocation relative to the safe assets (e.g., bills) within the portfolio. One must decide how to rebalance the portfolio in response to such changes. Dynamic strategies are explicit rules for doing so. Different strategies will produce different risk and return characteristics. Buy-and-hold strategies are "do nothing" strategies. They have a minimum return proportional to the amount allocated to bills and an upside proportional to the amount allocated to stocks.