What are small cap mutual funds?
A mutual fund pools money from many people, and a professional manager invests it under SEBI rules. A small cap mutual fund is an equity fund: equity means the fund buys shares in companies, so your money grows or shrinks along with those companies' share prices.
SEBI, the regulator for mutual funds, says a small cap fund must keep at least 65% of its money in small cap companies. Each fund falls into a category, SEBI's label for what the fund may hold. A company counts as small cap if it sits at rank 251 or below on a list kept by AMFI, the mutual fund industry's own association. AMFI ranks every listed Indian company by market capitalisation, which just means share price multiplied by the number of shares, or in plain words, what the whole company is worth on the stock market.
AMFI publishes this ranking twice a year, every January and July, using each company's average value over the previous six months. Every fund must then rebalance, meaning adjust its holdings to match the new list, within one month.
On the list for the six months to June 2026, the 251st company was Navin Fluorine International, worth an average of ₹33,442 crore. The old idea that a small cap company is worth less than ₹5,000 crore was never SEBI's rule. Go by the rank on AMFI's list, not a rupee number from memory.
SEBI leaves the other 35% to the fund manager's judgement, within limits: larger companies, money-market instruments (very short-term lending), gold or silver, or InvITs (funds that own infrastructure such as roads or power lines).