Investing & Mutual Fund Glossary

Plain-English definitions of the terms used across WealthKit's fund, stock and calculator pages. Each is written to be understood in one read — no jargon explaining jargon.

AUM (Assets Under Management)
The total rupee value of all the money a fund or fund house manages on behalf of investors. A larger AUM means more investor money is riding on the fund's decisions.
AMC (Asset Management Company)
The company that runs a group of mutual fund schemes — for example HDFC Mutual Fund or SBI Mutual Fund. Each AMC publishes a monthly portfolio disclosure for every scheme it manages, as required by SEBI.
Expense Ratio
The annual fee a fund charges, expressed as a percentage of your investment, deducted daily from the NAV. A 1% expense ratio means ₹1,000 a year on a ₹1,00,000 investment. Small differences compound into large amounts over decades.
Flexi Cap Fund
An equity fund that can invest across large-cap, mid-cap and small-cap companies in any proportion, giving the fund manager freedom to move between company sizes as opportunities change.
Large Cap / Mid Cap / Small Cap
SEBI ranks all listed companies by market capitalisation: the top 100 are large caps, the next 150 are mid caps, and the rest are small caps. Fund categories are defined by which of these buckets they must invest in.
Direct vs Regular Plan
Two versions of the same scheme. A Direct plan is bought straight from the AMC with no distributor commission, so its expense ratio is lower and returns are higher. A Regular plan pays a commission to the intermediary who sold it.
Portfolio Overlap
The share of two funds invested in the same stocks, weighted by how much each fund commits. High overlap means owning two funds gives you far less diversification than it appears — you are largely holding one portfolio twice.
Concentration (Top 10)
How much of a fund sits in its ten largest holdings. A fund with 55–60% in its top 10 is concentrated and moves sharply with those few names; a fund at 30–35% is spread wider.
Conviction
Loosely, how large a bet a fund has placed on a stock. A fund holding a stock at a high % to NAV is described as a high-conviction holder, because it has committed more of its assets to that single company.
XIRR
The Extended Internal Rate of Return — the correct way to measure returns when you invest at multiple dates (like a SIP). Unlike a simple average, XIRR accounts for exactly when each rupee went in, giving a true annualised return.
CAGR
Compound Annual Growth Rate — the single annual rate at which one lump-sum investment grew over a period. It works for a one-time investment but is misleading for SIPs, where XIRR is the right measure.
ISIN
A unique 12-character code identifying a specific security. WealthKit matches holdings across different funds by ISIN so the same stock is counted consistently everywhere, even when funds spell its name differently.
Monthly Portfolio Disclosure
The complete list of holdings every Indian mutual fund must publish at the end of each month under SEBI rules. It is the primary source behind every fund and stock page on WealthKit.
SIP (Systematic Investment Plan)
Investing a fixed amount at regular intervals (usually monthly) instead of a single lump sum, which averages your purchase price over time and builds discipline.