Evaluating mutual fund performance is crucial for investors seeking to align their investments with financial goals. Key metrics used for this purpose include Alpha and Beta in mutual funds, which are strategic tools for assessing a fund’s performance and its sensitivity to market changes.
These metrics help investors compare a mutual fund’s performance to the overall equity market over time. In this blog, we will delve deeper into what is alpha and beta in mutual funds and know their importance and calculation technique.
What is Alpha in Mutual Funds
Alpha is a metric used to evaluate an asset manager’s ability to generate returns for a mutual fund beyond what the benchmark index achieves. It serves as a comparative measure to assess whether the fund is outperforming or underperforming the market.
In mutual funds, a zero alpha indicates that the fund’s performance is exactly in line with the benchmark index. If the alpha is positive (greater than zero), it means the fund is outperforming the benchmark, reflecting the manager’s skill in generating excess returns.
Conversely, a negative alpha (less than zero) signifies that the fund is underperforming the benchmark, indicating a deficit in returns compared to the market standard.
What is Beta in Mutual Funds
Beta is a metric used to assess a mutual fund’s volatility relative to the benchmark index. It measures how sensitive a fund is to market fluctuations, indicating its stability during volatile conditions.
In mutual funds, a beta of 1 serves as a baseline, meaning the fund’s fluctuations mirror those of the benchmark index. A beta greater than 1 indicates that the fund is more volatile than the index, meaning it will experience larger price swings—both upward and downward—than the benchmark.
Conversely, a beta less than 1 suggests that the fund is less volatile, experiencing smaller price movements compared to the index, indicating greater stability.
Importance of Alpha and Beta in Mutual Funds
Asset managers typically use the same benchmark index to calculate both alpha and beta ratios. These metrics are crucial for understanding a fund’s past performance across various market conditions, helping predict future sustainability, risk factors, and growth potential.
Alpha and beta provide insights into a fund’s performance and sensitivity to market fluctuations, respectively. By using these ratios together, asset managers can assess a fund’s performance relative to the benchmark index while evaluating the risk taken to achieve that performance.
For example, if a fund returns 12% and its benchmark index returns 10%, the alpha is +2%, indicating outperformance. Conversely, if a fund returns 7% while the benchmark index returns 10%, the alpha is -3%, indicating underperformance.
Investors prefer a balanced ratio of alpha and beta to make a profit with affordable risks. Here is a comparative table that will help to clarify your concept of alpha, and beta ratios and their comparison.
| Conditions (compared to border-line) | Alpha | Beta | Explanation |
| High alpha and low beta | 2% or higher | Less than 1 | This indicates a strong performance with comparatively lower risk than it is in the market. These circumstances are rare to find. |
| High alpha and high beta | 2% or higher | Greater than 1 | This indicates high returns but comes with higher risk due to a more volatile market. This is suitable for aggressive investors with risk tolerance. |
| Low alpha and low beta | -2% or lesser | Less than 1 | This implies underperforming funds with more stability in fluctuations. This scenario is for highly conservative investors. |
| Low alpha and high beta | -2% or lesser | Greater than 1 | These are underperforming funds with high-risk factors due to more volatility. These funds are not apt for investment. |
| Neutral Performance | 0% | 1 | This combination of alpha and beta of mutual funds performs and behaves similarly to the benchmark index. It gives the same performance with similar risk factors. |
How to Calculate Alpha and Beta in Mutual Funds?
The calculator of alpha and beta is a very easy and streamlined process. Here are the formulas to calculate alpha and beta ratios with explanations of their elements.
One can calculate alpha using this formula.
Alpha = (Mutual Fund Returns – Start Price + DPS) / Start Price
Where,
- Mutual Fund Returns are the final value of the investment.
- The start price is the initial investment amount.
- DPS is the distribution per share.
Alternatively, alpha can be calculated using the Capital Asset Pricing Model (CAPM). If a fund’s expected return via CAPM is 10% and it achieves a 12% return, the alpha is 2% (12% – 10%).
Now, one can calculate beta by using this formula
Beta = (Covariance / Variance)
Where,
- Covariance measures the difference in returns between two instruments, such as a mutual fund and its benchmark index.
- Variance indicates how much the fund’s price deviates from its average price over time, reflecting market volatility.
These formulas provide a clear method for evaluating a mutual fund’s performance and risk relative to the market.
Final Thoughts
Alpha and beta in mutual funds are crucial metrics that offer insights into a fund’s quality, profitability, and risk exposure due to market fluctuations. Both aggressive and conservative investors should closely examine these ratios to make informed decisions about their investments.
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