Small cap funds show the most impressive long-term return charts in any mutual fund brochure. They also produce the largest gap between what the fund earned and what its investors actually earned — because the journey between those two numbers is where most people get off.
What is a Small Cap Fund?
A small cap fund must invest at least 65% of its assets in small cap companies — those ranked 251st and below by market capitalisation.
Unlike large caps (100 companies) and mid caps (150 companies), the small cap universe is open-ended. Thousands of listed Indian companies fall into it, ranging from established regional businesses to companies with minimal trading volume and thin disclosure.
Why This Category Behaves So Differently
| Factor | Consequence |
|---|---|
| Minimal analyst coverage | Genuine mispricing exists — the strongest argument for active management here |
| Thin trading volumes | Buying or selling meaningful quantities moves the price |
| Single-business concentration | One bad quarter, one lost customer, or one regulatory change can be existential |
| Weaker balance sheets | Less cushion to survive a downturn than a large company has |
| Large growth runway | A company ranked 400th genuinely can become a mid cap |
| Variable governance | Disclosure quality and promoter conduct vary far more than in large caps |
The first and last rows sit in tension. Low coverage creates opportunity for a skilled manager, and also means problems surface later than they would in a heavily scrutinised large cap.
The Drawdown Reality
This is the part worth being blunt about. In severe market corrections, small cap indices in India have fallen substantially more than large caps, and recovered considerably later.
| Phase | Typical small cap behaviour |
|---|---|
| Bull market | Outruns large and mid caps significantly |
| Correction | Falls hardest — often the deepest drawdown of any equity category |
| Bottom | Liquidity dries up; exiting becomes expensive |
| Recovery | Lags — small caps typically recover last |
| Full cycle | Has historically rewarded those who stayed invested throughout |
The published long-term return of a small cap fund assumes you held through every one of those phases. If you invested at a peak, watched a 50% fall, and redeemed near the bottom, your experience bears no resemblance to the fund’s advertised CAGR.
Fund Size Is a Genuine Constraint
Small cap funds face a size ceiling more acutely than any other category. The arithmetic is unforgiving.
A fund managing ₹30,000 crore wanting a 2% position takes ₹600 crore of buying. In a company whose shares trade perhaps ₹15 crore on an average day, accumulating that position takes weeks and pushes the price up throughout. Exiting is worse — selling into a falling market with thin volumes.
The practical results:
- The manager drifts toward the largest, most liquid small caps, or into mid cap territory using the flexible 35%
- Position sizes shrink until individual winners barely register in the portfolio
- Mistakes take weeks rather than days to exit
Several Indian small cap funds have voluntarily restricted lump sum inflows after growing beyond a comfortable size. That is a fund house choosing performance over asset gathering, and it is a signal worth noticing. See What is AUM? for the fuller explanation.
Horizon: Ten Years, Not Five
| Horizon | Suitability |
|---|---|
| Under 5 years | Unsuitable — a single cycle can exceed this period |
| 5–7 years | Risky; you may be exiting during a drawdown |
| 7–10 years | Workable for investors who genuinely tolerate volatility |
| 10+ years | The horizon the category is actually designed for |
A Realistic Allocation
Small caps work best as a limited satellite holding rather than a core position. A structure many investors use:
| Component | Rough share of equity portfolio | Role |
|---|---|---|
| Index or large cap fund | 50–60% | Core stability |
| Flexi cap fund | 20–30% | Managed allocation across sizes |
| Mid cap fund | 10–20% | Growth |
| Small cap fund | 10–15% | High-risk growth satellite |
At a 10% allocation, a 50% small cap drawdown costs 5% of your equity portfolio — uncomfortable but survivable. At a 50% allocation, the same fall costs 25%, which is where people abandon the strategy.
Two Prerequisites
Before allocating to small caps, two things should already be in place.
An emergency fund. Without one, an unexpected expense during a downturn forces redemption at the worst possible price. Small cap drawdowns and job losses tend to arrive in the same economic conditions.
Honest self-assessment. The question is not whether you accept volatility in principle. It is whether you would continue a SIP after watching the value fall by half over eighteen months. Most people believe they would; fewer actually do.
Key Takeaways
- Small cap funds must hold at least 65% in companies ranked 251 and below
- The universe is open-ended — thousands of companies of widely varying quality
- Low analyst coverage creates opportunity and means problems surface later
- Deepest drawdowns and slowest recoveries of any equity category
- Large fund size genuinely constrains the strategy — watch for drift
- Minimum realistic horizon: 10 years
- Best used as a 10–15% satellite, not a core holding
- An emergency fund should be in place first
Frequently Asked Questions (FAQ)
Q: What is a small cap fund in simple terms?
A small cap fund invests mainly in smaller listed companies — those ranked 251st and below by market capitalisation. SEBI requires at least 65% of assets in this segment. These companies have the most room to grow and also the highest risk of failing.
Q: How risky are small cap funds?
They carry the highest risk of any equity mutual fund category. In severe corrections small caps have fallen substantially more than large caps and taken considerably longer to recover. The category’s strong long-term record assumes you held through every one of those falls.
Q: What is the minimum horizon for a small cap fund?
Ten years is realistic. Small cap cycles in India can run for several years in each direction, and a shorter horizon carries real risk that you need the money during a drawdown — converting a temporary fall into a permanent loss.
Q: Why do small cap funds stop accepting lump sum investments?
When a fund’s assets grow beyond what the small cap universe can absorb, the manager cannot build meaningful positions without moving prices. Restricting inflows protects existing investors from strategy drift, and generally indicates the AMC is prioritising performance over growth in assets.
Q: How much of my portfolio should be in small cap funds?
Commonly 10% to 15% of the equity portion, as a satellite alongside a large cap or index core. At that weight a severe small cap fall is uncomfortable but survivable. At much higher allocations, the drawdown tends to be large enough that investors abandon the strategy at the worst moment.
Q: Do small cap funds give the highest returns?
Over long periods the category has delivered the highest returns among equity fund categories, but with the deepest falls along the way. Higher return and higher volatility are the same characteristic viewed from two angles, not separate features.
Q: Is SIP better than lump sum for small cap funds?
Yes, meaningfully so. Small cap volatility means a lump sum invested near a peak can remain underwater for years. A SIP accumulates more units as prices fall, lowering average cost. The difficulty is behavioural — continuing the SIP through a deep fall is when it does its most valuable work.
Related Reading: