Chapter 3 of 5
What is a mutual fund?
Learn units, NAV, mandates, expense ratios, direct and regular plans, and why a SIP is a payment method rather than a guarantee.
In this chapter
A pool governed by a mandate #
A mutual fund scheme pools money and invests under a stated objective and set of rules. Investors own units whose value reflects the scheme’s assets and liabilities. The net asset value per unit is an accounting measure of that pool, not a share price chosen by demand on a normal fund purchase screen.
The mandate, risk information, portfolio, costs and redemption terms are more meaningful than a fund name. Two schemes from the same fund house can have different objectives and risks. Different structures can also have different trading and redemption mechanics.
A SIP changes the contribution schedule #
A systematic investment plan schedules contributions. It can spread purchase dates and help operational consistency, but it does not protect against a prolonged fall or guarantee a particular return. The same underlying scheme risk remains.
Before comparing performance, match the period, plan, option and treatment of distributions. A lump-sum CAGR and a contribution-weighted return answer different questions. This site teaches the concepts and does not recommend a scheme or accept an application in this learning section.
Decision lab: Past return is only one part of fund research #
A fund’s last-year return can reflect market exposure, concentration, style and costs rather than persistent selection skill. Compare the actual plan and option with an appropriate benchmark over the same horizon. Distributions and cash flows also affect what a simple displayed return represents.
Prepare a comparison with scheme mandate, plan costs, holdings concentration, exit conditions and benchmark fit. Distinguish a published time-weighted fund return from an investor’s money-weighted result. Do not pick the evaluation window after seeing which one flatters the fund.
Hypothetical worked example
Unit arithmetic and a recurring contribution
An illustrative ₹10,000 purchase at NAV ₹20 buys 500 units before any relevant charges. A later NAV ₹18 values those units at ₹9,000. The lower NAV does not mean the investor has escaped a 10% decline.
A second ₹10,000 purchase at ₹18 buys about 555.56 additional units. Total cost is ₹20,000 across about 1,055.56 units, giving an average acquisition NAV near ₹18.95.
At NAV ₹18, the combined value is ₹19,000. Averaging the purchase cost has not eliminated the loss. Future NAV, costs and redemption terms determine subsequent outcomes.
Common mistakes
- Choosing a fund because its NAV looks low.
- Advertising a SIP as a guaranteed return or insurance against losses.
A SIP is best described as what?
Make this chapter useful
Can you defend the reasoning?
Before moving on, answer the self-check in your own words and write why each alternative fails. Use the worked example to test that explanation. Then apply it in the module research task; keep the assumptions and the evidence that could change your answer.
Sources and further reading
Further-reading references from the curriculum source list. Contract sizes, expiry calendars, settlement references, margin parameters and tax treatment can change; verify the current operative documents for the actual product. Worked figures are illustrative, not current quotes.
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General financial education. No securities recommendation, assured outcome or personal advice. Read the risk disclosures.