<human>:  What makes a good investment portfolio?
<bot>: A good investment portfolio is one that is diversified and includes a variety of asset classes and investment types. It should also be tailored to an individual's risk tolerance, time horizon, and financial goals. A portfolio should also be periodically rebalanced to ensure the investments are in alignment with the investor's goals. Lastly, it is important to have a clear understanding of potential costs and taxes associated with investments.