SEBI Fund Categorization
The 2017 rulebook that forced every fund into a defined box, so 'large cap' or 'multicap' means the same thing across every AMC.
Why you care
Before 2017, "large cap" meant whatever an AMC wanted it to mean, so two large-cap funds could hold wildly different things. SEBI's categorization forced every fund into a defined box with rules on what it must hold, and allowed each AMC only one scheme per box. "Which fund" became "which box", and the boxes are now comparable.
Run the numbers
The market-cap boxes are fixed by rank: the top 100 companies are large cap, and the next 150 (101–250) are mid cap. Everything from 251 down is small cap (illustrative — per SEBI/AMFI, verify current definitions). A large-cap fund must hold at least 80% in those top-100 names. The label now carries a real, enforced meaning.
Where this goes
The rulebook sorts the whole shelf into three broad boxes you'll actually choose between: equity funds that buy stocks, debt funds that lend, and hybrid funds that blend the two. Everything downstream — risk, return, which yardstick judges it — follows from which box a fund sits in.
Why you care
SEBI fund categorization is the 2017 rulebook that defined a fixed set of scheme categories and forced every mutual fund to declare which one it belongs to. It comes with hard rules on what each category may hold. It's the reason the shelf is legible: a "mid cap fund" from one AMC and a "mid cap fund" from another are now bound by the same definition, so they can actually be compared.
Before this, category names were marketing, not definitions. A fund could call itself "large cap" and quietly hold mid caps to juice returns, and you had no clean way to compare like with like. SEBI fixed three things at once. It defined the boxes (with objective tests, like market-cap rank for equity and duration for debt). It defined market caps by rank rather than by an arbitrary rupee threshold, with AMFI publishing the official list of large/mid/small companies every six months. And it ruled that an AMC may run only one scheme per category, which forced fund houses to merge the dozens of overlapping schemes they'd accumulated. One narrow exception has since opened up. From 2026, an AMC may launch a second scheme in a category once the existing one is more than five years old and larger than ₹50,000 crore. The original then closes to fresh money, so the shelf stays legible. The result is a shelf where the label on the box is enforceable.
Run the numbers
The equity market-cap definitions, fixed by rank of full market capitalisation (illustrative — these are SEBI/AMFI rules; confirm the current text):
| Box | Which companies | A fund in this box must hold |
|---|---|---|
| Large cap | Top 100 by market cap | ≥ 80% in large caps |
| Mid cap | 101st to 250th | ≥ 65% in mid caps |
| Small cap | 251st onward | ≥ 65% in small caps |
So a large-cap fund can't secretly load up on small caps for a return kick; the 80% floor forbids it. Debt funds are boxed by a different test (maturity and credit quality, from overnight funds out to long-duration and gilt funds), and hybrids by their equity-debt split. Layer on the one-scheme-per-category rule and the effect is a finite, comparable menu instead of a thousand near-identical products.
Where this goes
Categorization is the hub of the product shelf, and it sorts everything into three broad boxes an investor chooses between: equity funds, debt funds, and hybrid funds. Picking a fund really is picking a box first, because the box fixes the risk you're taking, the return you can reasonably expect, and the benchmark the fund will be judged against. Get the box right and you've made most of the decision.
What causes what
After this
- SEBI Fund Categorization causesEquity FundsOne of the three broad boxes the shelf is sorted into — funds that invest in stocks.
- SEBI Fund Categorization causesDebt FundsThe second broad box — funds that lend.
- SEBI Fund Categorization causesHybrid FundsThe third broad box — funds that blend equity and debt.