Chapter 4 of 7
Your first market terms
Distinguish market capitalization, enterprise value, volume, liquidity, bid–ask spread and percentage change.
In this chapter
Price and size measure different things #
A ₹20 share is not automatically cheaper than a ₹2,000 share. A company with 1,000 million ₹20 shares has a much larger equity market value than one with one million ₹2,000 shares. Market capitalization is price multiplied by outstanding shares; the denominator cannot be ignored.
Enterprise value is a different analytical measure, commonly combining equity market value with debt and subtracting cash, with adjustments depending on the business and definition. It is not interchangeable with revenue, book value or the money available in the bank.
Activity is not the same as tradability #
Volume counts units traded over a specified period. Liquidity concerns the ability to transact a meaningful quantity without an excessive price impact. High daily volume can coexist with a wide spread at a particular moment. A very small displayed spread can disappear when a large order reaches the book.
Open interest belongs to derivatives and counts outstanding contracts, not the total number of transactions that occurred. A contract can trade many times without a comparable increase in open interest. Do not combine units from shares, contracts and lots in one unexplained statistic.
Return and percentage changes #
A percentage change uses a stated base. Moving from 100 to 110 is a 10% increase, while falling from 110 to 100 is about a 9.09% decrease. Equal rupee changes are not equal percentage changes. A 50% loss requires a 100% gain on the remaining capital merely to recover.
Quoted returns can exclude expenses, distributions and taxes. Compare like periods, currencies and reinvestment assumptions. A number with no definition is not yet useful evidence.
Decision lab: The denominator can change the conclusion #
A price rises from 80 to 100, a 25% gain. A fall from 100 back to 80 is a 20% loss. Both describe the same price interval with different starting denominators. Mixing them can distort risk summaries.
Write three distinct calculations: point change, percentage return and percentage-point change in a yield. Then convert an illustrative lot quotation into rupee exposure; identify the multiplier rather than assuming one quoted point equals one rupee.
Hypothetical worked example
Three calculations from one fictional screen
A business has 5 million shares trading at ₹200. Market capitalization is ₹1,000 million, or ₹100 crore. It is not ₹200 and it is not the company’s cash balance.
If the bid is ₹199.50 and ask ₹200.50, the spread is ₹1, about 0.5% of the ₹200 midpoint. A person repeatedly crossing this spread incurs an economic cost even before brokerage.
If 100 derivative contracts trade while existing holders transfer positions, open interest need not rise by 100. To interpret the change, identify whether the counterparties open or close their positions.
Common mistakes
- Comparing two shares only by rupee price.
- Quoting a percentage return without identifying the base and period.
Market capitalization is calculated using which relationship?
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
- SEBI investor education ↗
- NISM: Research Analyst learning topics (scope reference; independent lessons) ↗
- SEBI Investor: understanding bonds ↗
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.