In the world of investing, numbers usually tell the story of how a fund has travelled through the markets. Still, not every number reveals the full picture!
This is where the concept of ‘rolling returns’ becomes relevant. Rolling returns in mutual funds are used while studying a fund’s performance over time. Here, instead of focusing on just one time period, it involves considering different time frames to understand how a fund has behaved across changing market phases. This approach helps to build a better view of a fund’s past performance.
To know more about rolling return in mutual funds, its significance, calculation, and real-world examples, keep reading!
What is Rolling Return in Mutual Funds?
A rolling return in mutual funds is a method used to evaluate how a mutual fund has performed across several overlapping time periods rather than between just two fixed dates (opening & closing points). This involves checking annualised returns within a given time period, where the calculation moves forward continuously across the fund’s history. This approach helps investors observe how a fund has performed during different phases of the market.
Why Does Rolling Returns Matter?
Rolling returns eliminate ‘timing bias’, which is starting/ending on a market peak or trough, by measuring the average annualised performance of your investment, providing a realistic picture of consistency and risk.
- Reflects real consistency: The rolling returns reveal if the fund you’re interested in delivers consistent performance over various periods, for example, 1, 3, 5 years, rather than just a high return during one specific period.
- Removes timing bias: The traditional returns, such as a 5-year CAGR, depend on a fixed start and end date, which might be misleading. The rolling returns use every possible data point, reducing the chance of a misleading result.
- Highlights risk & volatility: By analysing the range of returns over many periods, you can assess the likelihood of getting a certain return and understand how volatile a fund has been.
- Improves comparison: This approach provides a more accurate basis to compare multiple mutual funds or investment strategies against each other and against a benchmark over time.
- Guides investment decisions: This helps in selecting consistent, long-term performers and setting a little more realistic expectations for returns based on past performance data.
How to Calculate Rolling Returns?
Steps to calculate rolling returns in mutual funds:
| Step–1 | Define your horizon & frequency | Select the period you want to analyse (2-year, 3-year, or 5-year), and the frequency of the data points (NAV), that is daily, monthly, or yearly. |
| Step–2 | Select starting & ending dates | Select the starting and ending dates of the period you want to analyse. For example, 2018-2021. |
| Step–3 | Calculate initial returns | Calculate the annualised return for the selected period, using the formula: [(Current Value ÷ Previous Value)^(1/Number of years) – 1]. |
| Step–4 | Then we ‘roll’ the period forward | By rolling, we mean moving the start and end date by one interval. For example, 2018-2021 to 2019-2022. |
| Step–5 | Repeat—Analyse | Next, you keep repeating the process until you reach the current date. The resultant datasheet is a series of returns that shows a fund’s performance across different horizons. |
Rolling Returns vs Trailing (Point-to-Point) Returns
While rolling return measures annualised returns across various timelines, trailing or point-to-point returns calculate a fund’s performance for a fixed previous date till present. Let’s understand how the results influence the reflection of a fund’s performance and investment decisions, through the table below:
| Basis | Rolling Returns | Trailing Returns |
| Meaning | These are annualised returns over multiple, overlapping periods. | These are calculated from a fixed past date to the current date. |
| Calculation method | It involves a continuous calculation, which covers different market phases. | It involves a single calculation between two points. |
| Data produced | It is a series of returns over different time periods, which provide a range (average, minimum, or maximum). | It is a single percentage return. |
| Timing bias | It minimises bias of market highs and lows at starting and ending. | It is highly dependent on the selected start and end dates of the investment/fund. |
| Use in fund analysis | It is used by analysts to study long-term consistency of a mutual fund’s performance. | It is used for quick comparisons, such as 1-year, 3-years, or 5-years returns. |
Real-World Example of Rolling Returns
Let’s say we are examining a 3-year rolling return of XYZ Flexi Cap Fund using its NAV.
NAV of the fund:
| Year | NAV (Net Asset Value) (in ₹) |
| 2018 | 10 |
| 2019 | 12 |
| 2020 | 15 |
| 2021 | 18 |
| 2022 | 20 |
| 2023 | 24 |
Now the 3-year Rolling Return in Mutual Funds is calculated for each possible three-year period, and is as such:
| Period | Starting NAV (in ₹) | Ending NAV (in ₹) | 3-year Return Calculation | Return (in %) |
| 2018-2021 | 10 | 18 | (18 ÷ 10)^(1/3) − 1 | 21.64% |
| 2019-2022 | 12 | 20 | (20 ÷ 12)^(1/3) − 1 | 18.56% |
| 2020-2023 | 15 | 24 | (24 ÷ 15)^(1/3) − 1 | 16.96% |
This example shows how a fund delivered returns across different periods rather than depending on just one start and end date. Such analysis helps the investors to understand the stability of a mutual fund’s long-term performance.
Use Cases: Why Investors Use Rolling Returns
Here are some situations where the investors might prefer a rolling returns approach for the evaluation of mutual funds.
- Eliminating timing bias: Rolling returns remove the ‘lucky’ start/end date effect, which provides a realistic view of performance, regardless of whether the investment began during a market high or low.
- Assessing performance consistency: Investors might use this method to see if a fund consistently delivers returns, or if the fund’s returns are reliant on short-term market spikes, which indicates how the fund is reliable over time.
- Evaluating risk & volatility: By showing how a fund behaves over multiple market cycles, say bull and bear phases, it offers better insight into downside risk and stability compared to point-to-point returns.
- Better fund comparison: Comparing two funds using rolling returns allows investors to see which fund manager provides more consistent results across different periods. This aids in identifying better-performing, long-term fund managers.
Advantages & Limitations of Rolling Returns
Given the advantages of an unbiased view of investment performance, elimination of timing bias, and managing expectation, rolling returns are data-intensive, backward-looking, and involve complicated calculations. Let’s understand its major advantages and disadvantages from the table below:
| Advantages | Disadvantages |
| Rolling returns shows the consistency of a fund’s returns across multiple time periods. | But, in reality, it is based on historical data, and does not reflect the true nature of the future outcomes. |
| It allows investors to analyse and compare mutual funds, to check which fund has delivered better performance. | However, calculating it manually can be complicated, and it usually requires advanced calculation tools. |
| It offers a long-term performance view of a fund, while removing the effect of market timing. | Still, sudden market movements might impact the future return results. |
| By using rolling returns, you can know whether a fund delivers stable returns, while making it trustable in the long run. | It requires combining market risk, expense ratio and other charges, and portfolio management for better decision making. |
Final Thoughts
For investors who want to analyse and have a better understanding of a mutual fund beyond a single return figure, rolling returns offer a clearer lens. By examining performance across several overlapping periods, they reveal how consistently a fund has delivered results through changing market phases.
While past data can’t promise future outcomes, the pattern of rolling returns often highlights funds that combine resilience, discipline, and consistency in the long run.
FAQs
A rolling return in a mutual fund measures the annualised performance of a scheme across several overlapping time periods rather than one fixed start and end date. This method moves the calculation forward continuously, which allows the investors to observe how consistently a fund has delivered returns across different market conditions.
Let’s say a mutual fund’s NAV rises from ₹10 in 2018 to ₹18 in 2021. The 3-year rolling return is calculated as (18 ÷ 10)^(1/3) − 1. The same method is then repeated for the next periods, such as 2019–2022 and 2020–2023, to produce multiple return figures.
Rolling returns help investors study a fund’s consistency across different time periods. They reduce the influence of favourable or unfavourable start dates, offer a better view of performance, and help in comparing funds more clearly. This approach also allows the investors to understand the stability of returns over long market cycles.
To calculate rolling return, first select the investment horizon, such as three or five years. Then compute the annualised return for that period using NAV values. After that, move the start and end date forward by one interval and repeat the calculation until the latest available data is reached.
Rolling returns rely on historical performance, which cannot guarantee future results. The method also requires large amounts of data, particularly daily or monthly NAV records. For individual investors, manual calculations may appear complex without spreadsheets or analytical tools.
Rolling returns measure performance across many overlapping time periods, while trailing returns calculate the return between one fixed past date and the present. Rolling returns provide a series of results, whereas trailing returns produce only one figure for a selected period.
In mutual funds, rolling returns reveal how consistently a fund has delivered returns across different market phases. By examining several periods rather than one specific timeframe, investors gain a clearer understanding of stability, risk, and the reliability of a fund’s performance.
The rolling period usually depends on the investment horizon being studied. Analysts commonly use three-year or five-year rolling periods for equity mutual funds because these durations capture different market cycles and provide a more meaningful view of long-term performance.
