AUM in Mutual Fund

5paisa Research Team

Last Updated: 06 Jun, 2025 03:56 PM IST

What is AUM in Mutual Fund?

Unlock the Power of Mutual Funds!

+91
By proceeding, you agree to all T&C*
hero_form

Content

Introduction

When analysing mutual funds, investors often come across the term Assets Under Management (AUM). It’s a key metric that indicates the total market value of the assets a fund manages on behalf of its investors. While not a standalone measure of a fund’s performance, AUM plays a crucial role in understanding its scale, investor trust, and operational efficiency.

Full Form in Mutual Funds

The AUM full form in mutual funds is Assets Under Management. It represents the total value of assets that a mutual fund company manages on behalf of its investors at any given time. Understanding the AUM full form helps investors grasp the scale and popularity of a fund. When evaluating different schemes, knowing the AUM full form and its significance can assist in making better investment decisions.
 

What is AUM in a Mutual Fund?

Assets Under Management (AUM) refers to the total market value of all the investments that a mutual fund scheme manages at a given point in time. This includes the money pooled in by all its investors. For example, if an investor puts ₹1,00,000 into a mutual funds, this amount is added to the fund’s AUM.

Once the funds are collected, the fund manager allocates them across various securities like equities, bonds, or money market instruments, based on the scheme’s investment objective. The overall AUM changes regularly due to market fluctuations, fresh inflows from new or existing investors, and redemptions (withdrawals). AUM can offer insights into the size and maturity of a mutual fund. However, a higher AUM doesn't always mean better performance. 
 

Importance of AUM in Mutual Funds

Assets Under Management (AUM) is a critical indicator in mutual fund analysis as it reflects the total market value of the assets that a fund manages on behalf of its investors. A higher AUM often indicates investor confidence, signaling that the fund is well-established and trusted.

Key Importance of AUM:

  • Liquidity and Stability: Funds with larger AUM tend to have better liquidity, allowing fund managers to easily manage redemptions without affecting the fund’s performance.
  • Operational Efficiency: Larger AUM provides economies of scale, reducing the expense ratio, which benefits investors by enhancing net returns.
  • Performance Insight: A high AUM can indicate the fund’s success, but it’s important to balance this with performance. Sometimes, an excessively large AUM may lead to challenges in managing the fund effectively, especially in niche categories like small-cap funds.
  • Fund Consistency: A steadily growing AUM reflects consistent performance and investor trust over time, making it an important factor in evaluating a fund’s reliability.

In summary, while AUM is crucial in assessing mutual funds, it should be considered alongside other factors like expense ratio, past performance, and fund objectives to make informed investment decisions.
 

Significance of AUM in different funds

Equity Funds

The amount of assets under management is less essential than the consistency of returns and the degree to which the fund house complies with the investment aim. The success of an equity fund is determined not by its size or level of popularity, but rather by the asset manager's capacity to continuously generate good returns.

Debt Funds

If you are interested in investing in debt funds, AUM is an essential factor to take into consideration. In a debt fund that has more cash available, the expenses of the fixed fund can be distributed across a greater number of investors. As a consequence of this, the expenditure ratio that applies to each individual can be lowered, which ultimately results in higher fund returns.

AUM Investment Strategy

While AUM is often viewed as a performance indicator, it can also influence investment strategy. Fund managers tailor their portfolio decisions based on the size of the AUM. For instance:

Large AUM funds have more flexibility to diversify across sectors, geographies, or asset classes. This can help reduce risk and enhance returns through economies of scale.

Small AUM funds, on the other hand, may focus on niche opportunities or specific sectors, allowing for more agility but with limited diversification.

Investors can use AUM as a strategic filter depending on their goals. For conservative investors, funds with a high AUM may offer stability and lower volatility. For aggressive investors, funds with a smaller AUM but strong performance may provide high-growth potential, albeit with increased risk.

It’s also important to match AUM size with the fund category. For example, in small-cap funds, a modest AUM is often preferable as large inflows may impact the fund manager’s ability to stay agile in illiquid markets.
 

Significance of AUM in Large, Medium and Small-cap Funds

Large-Cap Funds

A comparatively significant number of large-cap funds are available to investors. Even while large-cap funds only cover 100 companies, the 100 businesses that they do cover have a significant amount of liquidity. As a direct consequence of this, a large-cap fund might manage a significant AUM.

Mid-Cap Funds

When compared to that of large-cap funds, the AUM capacity of mid-cap funds is significantly lower. Midcap companies often fall in the range of 101 to 250 in terms of their market capitalization.

Small-Cap Funds

Small-cap funds have a tendency to restrict cash inflows beyond a given point in time. When the market is volatile, the fund may have a difficult time trading its shares if it becomes a significant stakeholder in a company. Because of this, small-cap funds favour investing through SIPs rather than making one large investment at a time.
 

What kind of an effect does AUM have on the fees that mutual funds charge?

The cost that each mutual fund company charges for its services is commonly referred to as the expense ratio. The management fees, as well as the operational costs, are included in the expense ratio. These are dependent on the total amount of the fund. AUM is a crucial component that plays a role in the overall computation of the management fees that are associated with a mutual fund. Because the expense ratio or the fees of a mutual fund are computed as a percentage of AUM, a mutual fund with a larger AUM will have higher costs, whereas a mutual fund with a smaller AUM will have lower fees.

The Securities and Exchange Board of India has established a maximum allowable expense ratio for mutual funds, and it is based on the amount of assets under management (AUM). 

How is AUM in Mutual Fund calculated?

The total value of an asset under management (AUM) in a mutual fund is a measurement of the size of a financial institution as well as a significant performance indicator of success. This is due to the fact that a greater AUM often translates into larger revenue in the form of management fees. Because of this, financial institutions evaluate business trends by looking at the value of their AUM and comparing it to that of their competitors as well as to their own past performance.

Fund providers use a number of methodologies to arrive at their estimates of the value of the assets under management. When a fund consistently achieves high levels of profitability, the value of its total holdings will gradually rise. A bigger amount of assets under management (AUM) might be the consequence of successful efforts attracting additional investors and assets.

Calculating assets under management can seem a little bit different depending on whether you ask an institution or an investor. In their computations, some banks may incorporate mutual funds in addition to deposits and cash on hand. Other institutions simply take into account the funds that are subject to discretionary management and that the institution has the ability to utilize to trade on the clients' behalf.

AUM and Market movements

Alterations in the market have a substantial impact on the assets that are under control. When the fund has positive earnings, its total assets will increase, but when it has negative earnings, those assets will decrease. The current state of the market has an effect on the total value of assets that are managed by mutual funds. The returns will be higher while the market is rising, but they will be lower when the market is falling.

When the market is falling, it will incur losses. The value of an asset increases and falls in tandem with the ups and downs of the market. The change in the value of the asset is recast as the change in the amount of the asset that is managed by the management companies. This is also what sets the charge for investing in a mutual fund. In most cases, reduced costs correspond to lower values.

For example, 20 investors have contributed a total amount of INR 50,000 to a mutual fund scheme. The return on investment for participating in the mutual fund program is 12%. In this scenario, the asset that is being managed for the mutual fund program will be INR 56,000.
On the other hand, suppose the rate of return earned by the mutual fund plan is 1%. The amount of INR 50,500 would be used as the AUM for the mutual fund plan.

AUM and Expense Ratio

Assets Under Management (AUM) and Expense Ratio are closely related in mutual funds. AUM represents the total value of assets a fund manages. As AUM grows, the fund benefits from economies of scale, often leading to a lower expense ratio. The expense ratio is the annual fee charged to manage the fund, expressed as a percentage of AUM. A lower expense ratio is favorable, as it directly impacts investors' net returns. 

However, while larger AUM can lead to reduced costs, excessively large AUM can sometimes hinder fund performance, especially in small-cap or niche funds where managing large amounts becomes challenging.

Conclusion

Assets Under Management (AUM) is more than just a number; it’s a reflection of investor confidence, fund scale, and management strategy. While AUM helps establish a fund's financial footprint, it should not be the sole factor in your investment decision.

Instead, investors should view AUM alongside expense ratio, historical performance, fund category, and alignment with their own financial goals. Understanding how AUM works, its significance in different fund types, and how it affects fees and strategy can empower you to make smarter, well-informed investment choices.
 

Disclaimer: Investment in securities market are subject to market risks, read all the related documents carefully before investing. For detailed disclaimer please Click here.

Frequently Asked Questions

Not necessarily. A higher AUM indicates that a fund has attracted more investor capital, which often reflects popularity and trust. However, it does not directly correlate with better performance.

Yes, AUM is dynamic and can change frequently based on two key factors: market movements and investor activity. When the value of the fund's underlying assets rises or more investors contribute money, AUM increases. Conversely, redemptions or a market downturn can reduce the AUM.

Yes, AUM is an important factor to consider, but it should not be the only one. A healthy AUM can indicate fund stability and efficient cost distribution, but it should be evaluated alongside the fund’s historical performance, expense ratio, investment objective, and the category it belongs to.

Not necessarily. A higher AUM indicates that a fund has attracted more investor capital, which often reflects popularity and trust. However, it does not directly correlate with better performance.

Yes, AUM is dynamic and can change frequently based on two key factors: market movements and investor activity. When the value of the fund's underlying assets rises or more investors contribute money, AUM increases. Conversely, redemptions or a market downturn can reduce the AUM.

Yes, AUM is an important factor to consider, but it should not be the only one. A healthy AUM can indicate fund stability and efficient cost distribution, but it should be evaluated alongside the fund’s historical performance, expense ratio, investment objective, and the category it belongs to.
 

Open Free Demat Account

Be a part of 5paisa community - The first listed discount broker of India.

+91

By proceeding, you agree to all T&C*

footer_form