Most explanations start with a metaphor about a basket. That is accurate and almost useless, because it tells you nothing about who is holding the basket, who can take things out of it, or what happens if they go bust.
Here is the version that matters: a mutual fund is a trust that owns securities, and you own a share of the trust. Not of the fund house. That distinction is the entire safety architecture.
Who is actually involved
Four separate parties, deliberately kept separate:
- The sponsor — the company whose name is on the fund (HDFC, SBI, Nippon). It sets up the fund and puts in the initial capital.
- The trustee — a separate legal entity that holds the assets on behalf of investors and is legally answerable to them. Not to the sponsor.
- The AMC (Asset Management Company) — the entity that actually makes the investment decisions, employs the fund managers, and charges the fee. It is appointed by the trustee and it manages the money; it never holds it.
- The custodian and the RTA — the custodian keeps the securities; the registrar and transfer agent (CAMS or KFintech, for almost everything in India) keeps the record of who owns which units.
The reason this is worth knowing: if an AMC failed tomorrow, your money is not on its balance sheet. The scheme’s assets sit with the trustee and custodian. What you are exposed to is the investments falling in value — which is a real risk, and the only one you are supposed to be taking.
Units and NAV
When you invest, you are not buying a fund. You are buying units of a specific scheme at that day’s NAV.
NAV is arithmetic, not a market price. Take everything the scheme owns, subtract what it owes, divide by the number of units outstanding. It is struck once each business day after markets close, and every buyer and seller that day transacts at the same figure.
Two consequences people get wrong constantly:
- A high NAV is not expensive. A fund at ₹850 and one at ₹12 are not cheap and dear versions of anything. The NAV level only reflects how long the scheme has existed and how much it has grown. Your return comes from the change in NAV, and 10% is 10% at either price.
- You do not get today’s price by deciding today. Cut-off times and the date funds actually reach the AMC determine which day’s NAV you receive. For most equity schemes the cut-off is 3 p.m., and the money has to be realised.
What “open-ended” means
Almost everything you will meet is open-ended: the scheme creates new units when someone invests and cancels them when someone redeems. There is no fixed pool of units and no stock exchange involved — you transact with the scheme itself, at NAV.
That is why an open-ended fund cannot trade at a discount to its holdings the way a closed-end vehicle can. It is also why redemptions have a cost the fund bears: a wave of exits forces selling, which is the mechanism behind exit loads and, in extreme cases, behind a scheme being gated entirely.
A new fund offer is simply an open-ended scheme before it opens — sold at a flat ₹10 per unit. That ₹10 is not a discount. It is a scheme with no track record, which is strictly less information than a fund you can actually examine.
Where the fee goes
You never write the AMC a cheque. The fee is deducted from the scheme’s assets daily, before the NAV is published, which is why it is invisible and why it is worth understanding properly — see what a fund really costs and the Direct versus Regular gap.
What this site does with all that
Every figure here is computed from the daily NAV history that AMFI publishes, which is the one dataset every fund house is obliged to report to. Nothing is supplied by an AMC. That is why the numbers can differ slightly from a fund’s own factsheet, and why the methodology page states every formula and window rather than asking you to trust a rating.
Next: what the SEBI categories mean, and why the plan you buy — Direct or Regular — is the single most consequential choice on the form.
Key takeaway
A mutual fund is a trust that owns securities, and you own a share of the trust — which is why the AMC managing your money never holds it. Units and NAV are arithmetic, not a market price. The only risk you are meant to be carrying is the securities falling in value, and the whole fragmented structure exists to make sure that stays true.
More in Module 1 — The absolute basics
Mutual funds vs fixed deposits: which risk are you willing to see?
An FD hides its risk in purchasing power; a fund puts its risk on a screen daily. Where each genuinely wins, and why most households need both.
How do mutual funds actually make money?
The three doors return arrives through — appreciation, income, realised gains — and why all of them land in the NAV, net of costs you never see billed.
Decoding the alphabet soup: AMC, trustee, custodian and registrar
The company whose name is on the fund does not hold your money. Who does, why the structure is fragmented on purpose, and what an AMC failure would actually mean.
What is NAV — and does a low NAV mean a cheap fund?
It is a division, not a price. The arithmetic that settles the ₹12 vs ₹847 question for good, the NFO trap it creates, and which day’s NAV you actually get.
Active vs passive: can a human beat the market?
The accounting identity that starts the argument, what SPIVA India shows about large caps, why persistence is the real problem — and where active still earns its fee.
The magic of compounding: why starting early beats starting big
Most of the wealth arrives in the final stretch, from money contributed decades earlier. The worked example where five times the contribution still finishes behind.
Direct vs Regular plans: how a commission you never see costs you lakhs
The same scheme, the same portfolio, two different NAVs — and a trail commission deducted before the NAV is struck. What the gap compounds to over twenty years.
Can you lose money in mutual funds? Understanding market risk
Yes — but temporary, permanent and self-inflicted losses are three different things, and the largest source of realised loss is behavioural rather than market.
The mandatory checklist: what KYC is and how to complete it online
KYC is centralised, one-time and free — but Validated, Registered and On Hold mean very different things. Check which you are before you plan an investment.