Planetary boundary layer (PBL) Planetary boundary layer (PBL), also called atmospheric boundary layer, the region of the lower troposphere where Earthâs surface strongly influences temperature, moisture, and wind through the turbulent transfer of air mass.
Portfolio optimization tools are useful to assist planners, advisers, and clients in ways to conceptualize the asset allocation problem. But, they should not be relied upon as the primary tool for structuring an investment portfolio.
Allocation of investments: Also known as asset allocation, this term refers to the types of investments/asset categories you own and the percentage of each you have in your investment portfolio. Diversification: This is a risk management technique that mixes a wide variety of investments to potentially minimize your investment risk.