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Efficient Frontier



Stephen L. Thomas
By Stephen L. Thomas | March 28, 2024 | In

The efficient frontier, a concept rooted in modern portfolio theory, states that portfolios effectively balance risk and return. Created by Nobel Laureate Harry Markowitz in 1952, the efficient frontier is a graphical representation that can be useful to investors who want to build an asset portfolio that gives them the greatest possible returns while aligning with their risk tolerance. An efficient frontier may also be defined as a portfolio that gives the minimum risk for a given expected return. Before adopting this financial framework, investors should keep in mind that there is still risk involved.

Understanding Efficient Frontier

Each investor has a different appetite for risk, which means each person’s goals and portfolio will differ. The goal for an efficient frontier is for the potential returns to justify the risks each individual client is willing to take. In an ideal scenario, an investor would take the level of risk they are comfortable with and reap the highest possible returns.

If a particular level of risk is established and the anticipated returns are not met, it is considered an inefficient portfolio. Likewise, if the risk needed to achieve an expected level of return is too high, it is also considered an inefficient portfolio.

How is an efficient frontier created? The first step is to create a graph that corresponds with their portfolio. Expected returns are plotted on the y-axis, while the measure of risk, also known as the standard deviation of return, is plotted on the x-axis.

Investors can then plot their portfolio on the graph with their expected returns and risk (or standard deviation) and compare it to the efficient frontier curve. Portfolios that end up on the right side of the graph are riskier, while ones towards the bottom yield lower returns. If an investor isn’t satisfied with where their portfolio lands on the graph, they can adjust their investments by reallocating until they’re closer to their goal. Keep in mind that returns hinge on the mix of investments or level of diversification in a portfolio.

It is important to note that the efficient frontier will vary for clients. This is because each individual investor has his or her own goals, as well as tolerance for risk.

Benefits of Efficient Frontier

The main benefit of the efficient frontier is that it helps investors understand the risks and returns of their portfolio. Additionally, they are able to measure their portfolio against other portfolios that are considered efficient. During the process, investors should get a better understanding of how they might potentially shift their investing strategies to yield better returns, as well as the level of risk each strategy may entail. They can also gauge whether their portfolio is performing optimally.

Risks of Efficient Frontier

One of the limitations of the efficient frontier is that the calculations are based on historical data. That can be problematic because it assumes future returns will mirror past returns. Additionally, the model assumes asset returns will result in a normal distribution. However, asset returns can be anywhere from three standard deviations away from the mean.