What is the portfolio turnover ratio?

A mutual fund portfolio changes as its fund manager buys and sells securities. The portfolio turnover ratio measures the extent of this trading activity over a specified period, generally one year.

The ratio can offer useful insight into how frequently the portfolio is being traded and whether this pattern is consistent with the scheme’s investment strategy. It does not, however, measure performance, risk or fund-manager skill on its own.

This article explains the portfolio turnover ratio in a mutual fund, its calculation and how investors can interpret it alongside other scheme information.

What is the portfolio turnover ratio?

The portfolio turnover ratio indicates the extent to which securities in a portfolio were bought and sold during a particular period. It is expressed as a percentage of the scheme’s average net assets.

For example, a ratio of 40% means that the value used to measure the scheme’s eligible trading activity during the period was equivalent to 40% of its average net assets. It does not necessarily mean that exactly 40% of the individual securities were replaced.

A ratio can exceed 100%. This indicates that the value of the securities traded during the period was greater than the portfolio’s average net assets. It does not establish that every holding was replaced or traded only once.

Why does the portfolio turnover ratio matter?

The ratio provides context about how a scheme is being managed. A consistently high ratio may reflect frequent portfolio changes, while a consistently low ratio may indicate a longer holding approach.

Turnover also matters because buying and selling securities involves costs. Brokerage, applicable taxes and other transaction-related expenses can affect the scheme’s NAV and returns. The scale of the effect depends on the type of securities traded, transaction size and prevailing market conditions.

The ratio should be interpreted in relation to the scheme’s mandate. Frequent trading may be consistent with one investment strategy but unusual for another. A single number, viewed without this context, reveals little about whether the trading decisions added value.

What does a high portfolio turnover ratio indicate?

A high portfolio turnover ratio generally indicates that the scheme bought and sold securities frequently relative to its average net assets.

This may arise because:

• The fund manager actively responds to changing valuations or market conditions.
• The scheme follows a strategy that requires regular portfolio rebalancing.
• Substantial investor inflows or redemptions lead to portfolio transactions.
• Changes to an underlying index require a passive scheme to rebalance.
• The manager’s investment view or portfolio positioning changes during the period.

Higher turnover usually involves greater transaction activity and associated costs. It does not, by itself, indicate poor management, excessive risk or superior returns. The relevant question is whether the activity is consistent with the scheme’s stated strategy and whether its outcomes justify the costs and risks over time.

What does a low portfolio turnover ratio indicate?

A low ratio generally means that a smaller proportion of the portfolio was traded during the measurement period. Possible reasons include:

• The fund manager follows a buy-and-hold investment approach.
• Few changes were required because the existing holdings continued to support the scheme’s strategy.
• The underlying index experienced limited constituent changes.
• The investment mandate naturally involves less frequent trading.

Lower turnover usually results in fewer transaction costs than a comparable portfolio with frequent trading. It does not guarantee better returns, lower risk or greater stability. A manager may also retain securities that subsequently underperform, and a low-turnover scheme remains exposed to the risks of its underlying investments.

Active and passive funds

Actively managed schemes give the fund manager discretion to select securities and change portfolio positions within the scheme’s mandate. Their turnover can vary substantially according to the investment style, market conditions and portfolio decisions.

Passive funds seek to replicate or track an underlying index. They often have lower turnover because trading is generally driven by index changes, rebalancing, corporate actions and investor flows. However, passive funds do not have uniformly low turnover. An index that rebalances frequently or follows a more dynamic methodology may lead to greater trading activity.

Turnover should therefore be compared among schemes with similar mandates. Comparing a highly active equity fund directly with a broad-market index fund may reveal differences in strategy, but it does not establish which scheme is more suitable.

How to use the portfolio turnover ratio to evaluate a mutual fund

The ratio can help an investor examine whether a scheme’s trading pattern is consistent with its investment approach. Consider the following factors:

• Scheme category and mandate: Compare the ratio with schemes that follow broadly similar objectives and strategies.
• Trend over time: A sudden increase or decrease may be more informative than one isolated annual figure.
• Investment style: A high-conviction buy-and-hold strategy may naturally have lower turnover than a tactical or actively rebalanced strategy.
• Transaction costs: Frequent trading can create additional costs that affect the scheme’s NAV.
• Portfolio changes: Review whether substantial turnover resulted from investment decisions, index rebalancing or investor flows.
• Performance and risk: Consider whether the scheme has delivered results consistent with its objective and the risks taken.
• Expense ratio: Review this separately because portfolio turnover and the disclosed expense ratio measure different aspects of scheme costs.

The ratio can support an assessment, but it should not be used as a screening rule in isolation. A low-turnover scheme is not automatically preferable, and a high-turnover scheme should not be rejected solely because it trades more frequently.

Does portfolio turnover affect an investor’s taxes?

Transactions made by a fund manager within a mutual fund portfolio do not ordinarily create a direct capital-gains tax liability for the unit holder in India. An investor’s tax liability generally arises from events involving their own units, such as redemption, switch or receipt of taxable distributions, subject to the applicable tax rules.

Portfolio turnover can still affect an investor indirectly. Transaction costs and the outcome of trading decisions are reflected in the scheme’s NAV. This is different from taxing the investor each time the scheme buys or sells an underlying security.

Tax rules can change and may differ according to the type of scheme, holding period and investor circumstances.

The tax information in this article is based on prevailing laws at the time of publishing the article and is subject to change. Please consult a tax professional or refer to the latest regulations for up-to-date information.

How to calculate the portfolio turnover ratio in a mutual fund

The ratio is generally calculated using the lower of the value of securities purchased or sold during the period, divided by the scheme’s average net assets for the same period.

The portfolio turnover ratio calculation can be expressed as:

Portfolio turnover ratio = Lower of purchases or sales during the period / Average net assets during the period x 100

Selecting the lower of purchases or sales helps reduce the influence of transactions arising solely from net subscriptions or redemptions.

Consider a scheme with the following figures for one year:

• Purchases of securities: ₹1,000 crore
• Sales of securities: ₹900 crore
• Average net assets: ₹1,200 crore

Since sales are lower than purchases, ₹900 crore is used in the numerator:

₹900 crore / ₹1,200 crore x 100 = 75%

The scheme’s portfolio turnover ratio for the period would therefore be 75%.

This means that the trading activity counted under the calculation was equivalent to 75% of the scheme’s average net assets. It does not mean that every security was traded or that the scheme earned capital gains on 75% of its portfolio.

Source: AMFI Best Practice Guidelines Circular on portfolio turnover ratio calculation.

The figures shown are for illustrative purpose only.

Where can investors find the portfolio turnover ratio?

Mutual fund factsheets generally disclose the portfolio turnover ratio for applicable equity schemes. Investors can review the latest factsheet on the AMC’s website and compare it with earlier disclosures to understand how turnover has changed.

The factsheet should be read together with the Scheme Information Document, portfolio disclosure, Riskometer, expense ratio and performance information. These documents provide the context needed to interpret the ratio.

Source: AMFI guidance on tracking mutual fund investments through factsheets.

Conclusion

The portfolio turnover ratio shows how extensively a mutual fund portfolio has been traded during a specified period. A high ratio reflects greater trading activity, while a low ratio generally reflects fewer portfolio changes.

Neither result is inherently favourable. The appropriate level of turnover depends on the scheme’s category, mandate, investment style and prevailing conditions. Investors can use the ratio to understand a scheme’s management approach and trading costs, but it should be considered alongside performance, risk, expenses and portfolio quality.

FAQs

What is the portfolio turnover ratio?

The portfolio turnover ratio measures the value of a scheme’s eligible purchases or sales during a period relative to its average net assets. It is usually expressed as a percentage.

Why is the portfolio turnover ratio important for investors?

It provides insight into a scheme’s level of trading activity, investment approach and transaction-cost implications. It can also help investors identify changes in the way a portfolio is being managed.

How can a high portfolio turnover ratio affect mutual fund returns?

Frequent trading can create brokerage, taxes and other transaction-related costs that affect the scheme’s NAV and returns. A high ratio does not establish whether the trading decisions themselves will improve or reduce performance.

What is considered a good portfolio turnover ratio in mutual funds?

There is no universally suitable ratio. An appropriate level depends on the scheme’s category, mandate and investment strategy, so comparisons should generally be made between similar schemes.

Does a low portfolio turnover ratio mean better investment stability?

No. A low ratio indicates less trading activity, not lower volatility or greater stability. Risk continues to depend on the scheme’s underlying securities, asset allocation and investment strategy.

Can a portfolio turnover ratio be more than 100%?

Yes. A ratio above 100% means that the eligible trading activity during the period exceeded the scheme’s average net assets. It does not necessarily mean that every holding was replaced.

How can investors use the portfolio turnover ratio to choose a mutual fund?

Investors can compare the ratio across schemes with similar mandates and examine its trend over time. It should be considered with the scheme’s objective, portfolio, risk, costs and performance rather than used as a standalone selection criterion.