Why Can Mutual Fund Returns Fall Despite Strong Inflows?

Equity mutual fund schemes received about ₹38,307 crore in net inflows in September 2026, up 30.6% from August, according to AMFI. If your SIP is showing a loss, this can be confusing. If more money is going into mutual funds, why is your investment not growing?

The short answer is that new money coming into a fund does not raise your returns. Your returns depend on how the shares and other assets the fund holds perform. A fund can keep getting new money even while its NAV falls.

Understanding this helps you read inflow headlines without letting them decide whether to change a fund, raise your SIP or invest more. The September data shows that many people are still investing. It does not tell you how your own fund is doing.

What Do Strong Mutual Fund Inflows Actually Tell You?

Gross inflow is the total money investors put in during a month. Net inflow is that amount minus the money investors withdrew through redemptions. Both numbers show how much people are investing. Neither shows what that money earned.

Here is how September compares with August for open-ended equity schemes in AMFI's report.

Subscriptions rose by only about 1.7%, but redemptions fell by about 17.5%. Around 86% of the rise in net inflow came from fewer withdrawals, not from more buying. So the 30.6% jump does not mean new investment grew by 30.6%.

Two more points are worth keeping in mind. First, these are totals for a whole category, not for your scheme. One fund may attract a lot of money while another sees withdrawals. Second, "equity schemes" here means the open-ended equity category in AMFI's report, such as flexi cap, mid cap and small cap funds. Equity index funds and equity ETFs are reported separately, and they took in about ₹12,600 crore more in September.

Why Does Fresh Money Not Automatically Increase NAV?

NAV, or Net Asset Value, is the value of a fund's assets after liabilities, divided by the number of units. When you invest, the fund gives you units at the day's NAV. New money adds to the fund's assets and also adds to the number of units, so NAV does not change because of the subscription itself.

Here is a simple example. A fund has ₹1 lakh in assets and 1,000 units, so its NAV is ₹100. A new investor puts in ₹10,000 and gets 100 units. The fund now has ₹1.10 lakh and 1,100 units, and NAV is still ₹100.

Now suppose the fund invests all that money and its portfolio then loses 5%. The assets fall to ₹1,04,500. With 1,100 units, the NAV becomes ₹95. The fund is bigger than where it started, but each unit is worth less. This example ignores costs, expenses and redemptions so that the main idea is easy to see.

Over time, heavy buying can affect the prices of the shares a fund buys, especially in smaller companies. That is a market effect. New money does not raise NAV on its own. What matters for you is the value of your units compared with the money you put in.

Where Does Your SIP Money Go After You Invest?

A Systematic Investment Plan (SIP) is simply a way to invest a fixed amount regularly. Once your instalment is invested, it becomes part of the fund's common pool. The fund manager invests that pool according to the scheme's stated strategy, together with money from all other investors.

An equity fund mainly holds shares, a debt fund mainly holds bonds and similar instruments, and a hybrid fund holds a mix. Within equity, a large cap fund, a small cap fund and a sector fund all invest in different kinds of companies. How you pay, by SIP or lumpsum, does not change what the fund owns.

A fund also keeps some cash to meet redemptions and settlements. New money may be used to buy more shares, including new issues like IPOs, or it may sit as cash for a while. The amount invested in shares in a month need not match the amount that came in.

To see what your fund actually holds, read its monthly portfolio disclosure. Look at the top holdings, the sector split and the cash level, and check whether they match the fund's stated strategy. The disclosure does not trace each individual SIP instalment.

Why Can Your Mutual Fund Return Differ From the Market?

Your fund earns returns from the assets it actually holds. Company earnings, the prices the fund paid, interest income for debt holdings and the fund's expenses all play a part. Strong subscriptions cannot make those assets rise.

The Nifty 50 fell about 6% in September 2026. That does not mean every equity fund or SIP fell by the same amount. Funds differ in their holdings, sector weights, company sizes and cash levels, so their results differ too. Markets can fall for many reasons, such as global interest rates, oil prices or lower expectations for company profits. A fund feels these only through the companies it owns.

Compare your fund with the right benchmark for its type, over the same period. A small cap fund should be compared with a small cap index, and a hybrid fund with a benchmark that matches its mix of assets. For an index fund, look at the difference from its total return benchmark, along with its expenses.

Your own SIP return is also different from a fund's published return. XIRR is the yearly return worked out from the actual dates and amounts of your investments. A published fund return usually covers one fixed period. To compare fairly, use the same dates, amounts and period.

Should Strong Inflows Change Your SIP or Fund Choice?

Strong inflows show what other investors are doing. They do not tell you whether a fund suits your goal. Start with your own situation.

If your SIP is new and showing a loss. Check how long you can stay invested and whether the monthly amount is still comfortable. A few weak months can simply reflect the market and do not prove you picked the wrong fund. When the NAV falls, the same SIP amount buys more units. Those extra units help only if the NAV recovers later, and nothing guarantees that. Money you need soon should not depend on an equity recovery. Then compare the fund with its benchmark and category over the same period. If it is lagging, look for the reason, such as heavy exposure to one sector or a different investment style.

If you have been investing for several years. Check how close you are to your goal and how much time is left before you need the money. A portfolio that suits a distant goal may need a change as the expense gets closer. Also check whether your funds hold the same stocks, because more funds do not always mean more diversification. Keep a planned change in your portfolio separate from a reaction to one weak month or to a fund that is attracting a lot of money.

If you want to invest a lumpsum. Begin with the surplus you have after emergency savings and near-term needs. Then ask whether more equity fits your planned mix and whether you can handle further losses. High inflows into a category do not mean its holdings are cheap. You can also compare investing all at once with spreading the amount over several months. Spreading reduces the risk of a single entry date but can lag if markets recover quickly. The lumpsum versus SIP top up comparison explains how to weigh this.

What Should Mutual Fund Investors Track Next?

Track your fund's performance against the right benchmark, any changes in what it holds, and your progress towards your goal. Work out your own return using the actual dates of your investments, and check that your allocation still fits your finances. These tell you far more about your investment than a headline about industry inflows.

September's inflows show that equity funds kept receiving money even after redemptions. Your units still earn their return from the portfolio your scheme holds. Treat inflows as a sign of how many people are investing, and judge your own investment by its returns, its risks and whether it suits your goal.