Business sector
Also written Economic sector
A broad grouping of related industries serving similar economic functions — wider than a single industry but narrower than a whole economic sector such as agriculture or services.
In plain language
A company sits inside three nested groups. The workbook uses all three, not just two.
The smallest group is an industry. It is a set of firms that sell the same kind of product to the same customer need. The auto industry and the insurance industry are examples.
The middle group is a business sector. It bundles several related industries together. Financial Services is one such sector — it spans insurance, banking, credit rating and investment banking.
The widest group is an economic sector. It covers a whole slice of the economy, such as agriculture, manufacturing, public utilities or services. These are the broad segments that add up to a country's national income.
How it works
The workbook's own examples make the nesting explicit: "Industry is a grouping of firms, which offer the same or similar products or service to serve the same customer need (example, Auto industry, Insurance industry, Steel industry, Telecom industry, Entertainment industry). Business Sector is a broad category comprising similar and related industries (example, Financial Services Sector encompassing Insurance, Banking, Credit Rating, Investment Banking; Industrial metals sector comprising Steel, Copper, and Aluminum industries). Economic sector represents the segments of an economy which contribute to the total national income or national product, like agriculture, manufacturing, public utilities, and services."
A worked example
Illustrative. Three companies all sit inside India's "Financial Services" business sector, but in different industries. A private bank reports Rs 40,000 crore of net interest income for the year, the number that mainly drives how it is judged. A life insurer reports Rs 5,000 crore of new business premium, and is judged largely on its claims ratio, not that premium figure. A credit rating agency reports Rs 500 crore of total revenue, driven almost entirely by fee income.
Grouping all three simply as "Financial Services" tells an analyst nothing about which one is actually doing well — a bank's net interest income and a rating agency's fee income are not comparable numbers at all, even though both companies sit in the same business sector.
Why NISM asks about it
Chapter 6.1 (Role of industry analysis) sets out the three-level distinction at the very start of the chapter. Expect a classification or matching question distinguishing industry, business sector and economic sector using the workbook's own examples.
Common exam traps
- "Industry," "business sector" and "economic sector" are used loosely and interchangeably in everyday speech, but the workbook gives them a strict, nested definition — treating them as synonyms costs marks in a classification question.
Check yourself
1.According to the workbook, which of the following is the correct definition of an "industry"?
- a)A segment of the economy that contributes to total national income or national product
- b)A grouping of firms which offer the same or similar products or services to serve the same customer need
- c)A broad category comprising several similar and related industries
- d)Any set of companies listed under the same index
Show the answer
Answer: (b) A grouping of firms which offer the same or similar products or services to serve the same customer need
The workbook defines an industry as a grouping of firms offering the same or similar products or services to serve the same customer need — auto, insurance, steel, telecom, entertainment.
Option A is the definition of an economic sector (agriculture, manufacturing, public utilities, services). Option C is a business sector (financial services covering insurance, banking, credit rating and investment banking). Option D is not a workbook definition at all — index membership is a market convention, not an industry grouping.
The three widen in this order: industry → business sector → economic sector.
2.According to the workbook (source: MSCI, March 2023), the Global Industry Classification Standard (GICS) is structured as:
- a)A three-tier system of sectors, industries and sub-industries — 11, 74 and 163 respectively
- b)A four-tier hierarchy of sectors, industry groups, industries and sub-industries — 11, 25, 74 and 163 respectively
- c)A four-tier hierarchy of economic sectors, business sectors, industries and firms, maintained as India's National Industry Classification
- d)A four-tier hierarchy of sectors, industry groups, industries and sub-industries — 25, 11, 163 and 74 respectively
Show the answer
Answer: (b) A four-tier hierarchy of sectors, industry groups, industries and sub-industries — 11, 25, 74 and 163 respectively
The workbook: "GICS which is widely used in financial sector for global investors... is a four-tiered, hierarchical industry classification system where the four tiers are: Sectors, Industry Groups, Industries and Sub-Industries divided into 11 sectors, 25 industry groups, 74 industries and 163 sub-industries." The figures are sourced to MSCI, March 2023, and illustrated with the Energy sector.
Option A drops the industry groups tier — the count is four tiers, not three. Option D keeps the right tier names but scrambles the counts; the numbers rise as the tiers narrow (11 → 25 → 74 → 163). Option C mixes up three separate ideas: economic sector and business sector are the workbook's definitional terms in section 6.1, and the National Industry Classification (NIC) is India's own system, named separately from GICS and NAICS.
Where this is taught
Free preparation for NISM Series XVRelated terms
- Attractive industryAn industry structure, under Porter's Five Forces, with low competition, high entry barriers and weak buyer or supplier power — letting its companies earn strong, durable margins.
- Business life cycleThe stages an industry passes through from emergence to decline — pioneering, growth, maturity, decline, and rarely reinvention — driven by the secular trends around it.
- Porter's Five ForcesMichael Porter's framework for judging how much profit an industry can sustain, through five competitive pressures: rivalry, new entrants, substitutes, and the bargaining power of suppliers and of buyers.
- ARPUAverage revenue earned per subscriber over a period — the key top-line KPI analysts use to track telecom and other subscription businesses.
- GICSThe Global Industry Classification Standard — a four-tier system widely used by global investors, with 11 sectors, 25 industry groups, 74 industries and 163 sub-industries.