Equity mutual funds fell across all four major categories in September 2026, but some lost more than others. Mid-cap funds recorded the biggest average decline at 6.72%, while small-cap funds fell 2.71%, based on category averages for direct plans. The Nifty 50 fell nearly 6%, its largest monthly fall since March.
This article looks at how large-cap, mid-cap, small-cap, and flexi-cap funds performed in the month, and why their numbers were not the same.
How Did Equity Mutual Funds Perform in September 2026?
The table shows category averages for September 2026 (August 31 to September 30), alongside the related market index for the same month. An index is a basket of shares. It is not a mutual fund, so the two columns should be read separately.
| Fund category | Average fund return, September | Related index, September | What it shows |
| Mid-cap | -6.72% | Nifty Midcap 150: -7.1% | Largest average fall among the four categories |
| Large-cap | -5.83% | Nifty 50: nearly -6% | Fell in line with the main index |
| Flexi-cap | -5.23% | Not applicable (invests across company sizes) | Fell less than large-cap and mid-cap |
| Small-cap | -2.71% | Nifty Smallcap 250: -3.1% | Smallest average fall |
Fund figures are category averages for direct plans. Regular plans may show slightly different returns. These are averages, not the return of every scheme or every investor. Individual schemes may perform differently.
The main finding is that every category fell, but not equally. Mid-cap funds lost about two and a half times as much as small-cap funds on average. Both fund categories lost slightly less than their indices.
Why Did Some Equity Mutual Fund Categories Fall More?
A big rally came before the fall: The Nifty Midcap 150 had gained over 21% between April and August and hit a record high on August 26. About 87% of its stocks were lower by September 28 compared with a month earlier. A strong rally before September may have left some mid-cap stocks more vulnerable when market sentiment weakened.
Some experts were worried about prices: Market analysts said the mid-cap and small-cap space may have become overheated. When shares are already expensive, even a small disappointment can lead to a sharper drop.
Oil, bond yields and the West Asia conflict added pressure: US bond yields touched a 19-year high of 5.28%. Brent crude rose from about $90 to nearly $109 a barrel during the month. A fund manager linked the weak month to the lack of de-escalation in West Asia, which pushed oil prices up and raised worries about India’s import bill and inflation.
Large companies faced their own problems: Foreign institutional investors pulled out ₹2.32 trillion between April and September, while domestic institutions bought ₹3.89 trillion. Large caps were dragged down by foreign selling and by trouble in heavyweight banking and IT stocks. An equity head said mid-caps and small-caps had benefited from a lower base and steady domestic demand.
These factors appeared together, so it is not possible to say how much each one contributed to a particular category’s fall.
Why Did Mid-Cap, Small-Cap and Large-Cap Funds Perform Differently?
The categories hold different kinds of companies. Under SEBI rules, large-cap funds mainly own the top 100 companies by market value. Mid-cap funds focus on companies ranked 101 to 250. Small-cap funds mainly own companies ranked 251 and below.
Flexi-cap funds can invest in any mix of the three. On average, flexi-cap funds held about 64% in large caps, 19% in mid caps, and 17% in small caps over the three years to March 2026. This is a historical average, and each fund’s mix can differ.
In September, mid-cap funds averaged -6.72%, large-cap funds -5.83%, flexi-cap funds -5.23%, and small-cap funds -2.71%. This describes September only. It does not show that small-cap funds are less risky, and it does not suggest how they will perform next.
Does One Bad Month Mean Investors Should Worry?
One month shows only a small part of the picture. Quarterly category averages show how different the earlier months were.
| Fund category | April–June 2026 | July–September 2026 |
| Large-cap | +9.99% | -3.97% |
| Flexi-cap | +13.78% | -2.01% |
| Mid-cap | +17.47% | -2.81% |
| Small-cap | +24.08% | +2.29% |
Average returns for each quarter, direct plans.
Looking at these figures, September’s fall followed a strong run in the April to June quarter. For the six months from April to September, index returns tell a similar story. The Nifty 50 gained 1.3%, the Nifty Midcap 150 rose 12.5%, and the Nifty Smallcap 250 rose 24.6%. Those are index returns, not mutual fund returns.
These are past figures and do not predict what comes next. Losses can happen even when someone invests for the long term, and they do not always recover on any set timeline. A fall of 5% or 6% in one month is a reminder that equity funds carry real risk.
What Should Mutual Fund Investors Keep in Mind?
- Check your goal and time horizon before looking at any monthly number.
- Look at which companies and sectors your funds hold.
- Compare performance over suitable periods, such as three or five years, not just one month.
- Avoid switching funds only because another category did better recently.
- Review your spread across large, mid and small companies to see how much risk you carry.
- Check whether your current investments still fit your financial needs.
Key Takeaway
All four equity fund categories fell in September 2026. Mid-cap funds recorded the largest average decline, and small-cap funds the smallest. Different categories can react differently to the same market condition, because they hold different types of companies. One month’s return is not enough to judge whether a fund suits you over the long term.
FAQs
Why did equity mutual funds fall in September 2026?
The broader market fell. The Nifty 50 dropped nearly 6%. Reports pointed to higher oil prices, rising US bond yields, the West Asia conflict, and foreign selling. It is not possible to say how much each factor contributed.
Which equity mutual fund category fell the most?
Among the four main categories, mid-cap funds fell the most, with an average return of -6.72% in September 2026. Large-cap funds averaged -5.83% and flexi-cap funds -5.23%.
Why do mid-cap and small-cap funds perform differently from large-cap funds?
They invest in different companies. Medium and smaller companies can react differently to market conditions than the largest ones. In September, mid-cap funds fell more than large-cap funds on average, and small-cap funds fell less.
Should investors worry when equity mutual funds record negative returns?
Short-term losses are a normal part of equity investing, but they carry real risk. It helps to check whether the fund still matches your goal and time horizon.
Is one month's return enough to judge a mutual fund?
No. One month can be unusual. Longer periods, the fund's holdings, and your own goals give a fuller picture.
ARN Disclosure: Investik Future is an AMFI-registered Mutual Fund Distributor. ARN-341107 — Verify on AMFI ↗. Komal Thakur is the content author and digital marketer; the ARN registration belongs to Investik Future, not to the author personally.
