that your optimal asset allocation is 70% stocks and 30% bonds, you'll need to make sure that no more than 70% of your portfolio is invested in individual stocks. Assuming you do go down the road ...

The optimal strategy is one that you can follow no matter what the market is doing. It should reflect your investing time horizon, the timing of planned withdrawals, the size of those withdrawals ...

"Most of the widely used professionally managed portfolios ... optimal asset allocation in their portfolio to target a desired level of risk and return. For example, while a 60/40 portfolio of ...