<human>:  What parts of my portfolio should I invest in to maximize returns?
<bot>: The best way to maximize returns when investing in a portfolio is to diversify by allocating different parts in different asset classes such as stocks, bonds, mutual funds, cash, and alternative investments. Consider factors such as return on investment (ROI), risk tolerance, and investment objectives when making decisions about which parts of your portfolio to invest in. Consider investing in an index fund or an asset-allocation strategy that mixes different asset classes to diversify your portfolio and help balance out the potential volatility of any individual investment.