CFA Level I Exam · Industry and Competitive Analysis

External Factors and Sector Cyclicality in Industry Analysis

Updated 7 October 2026 · Fact-checked

External factors are forces outside an industry, such as the economy, technology, demographics, government and society, that shape its growth and profits. Cyclical industries swing strongly with the business cycle. Defensive industries stay steadier. To solve a question, name the external force, then judge how sensitive demand is to income and credit.

Understand External Factors and Sector Cyclicality

An industry does not operate in a vacuum. Forces outside its control change demand, costs and competition. Analysts group these forces into five areas: macroeconomic, technological, demographic, governmental and social. This is a PESTEL-style checklist (political, economic, social, technological, environmental, legal). Use it to make sure you have not missed a driver.

Macroeconomic factors include economic growth, interest rates, inflation and exchange rates. Strong growth lifts demand for most products. High interest rates hurt industries that rely on borrowing, such as housing and autos. A strong home currency can hurt exporters.

Technological change can create new industries, shrink old ones and lower entry barriers. Demographic factors, such as age mix, population growth and income distribution, shift demand. An ageing population helps healthcare. A young population helps education and consumer goods. Governmental factors include regulation, taxes, subsidies, tariffs and trade policy. Social factors cover lifestyles, tastes, attitudes and values, such as demand for sustainable products.

Next is sector cyclicality. Growth industries expand faster than the economy because of structural change, such as new technology. They can still be volatile. Cyclical industries have sales and profits that move strongly with the business cycle. They sell big-ticket or discretionary items, such as cars, luxury goods, construction and airlines. Many also have high fixed costs, so profits swing even more than sales. Defensive industries sell necessities, such as food, utilities and healthcare. Demand is steady in recessions, so profits are more stable.

The key test is income sensitivity and postponability. Can the buyer delay the purchase? Does demand fall sharply when income falls? If yes, the industry is cyclical. If not, it is defensive. Cyclical and defensive are about earnings sensitivity to the cycle. Growth is about long-run expansion. An industry can be a growth industry and also cyclical.

Key formulas to remember

External factor checklist: Macroeconomic + Technological + Demographic + Governmental + Social; Use it to classify any external influence in a question. Environmental and legal issues usually fall under social or governmental.
Cyclical industry test: Demand highly sensitive to income and credit, purchases postponable → cyclical; Typical examples: autos, housing, luxury goods, capital equipment, airlines.
Defensive industry test: Demand for necessities, low sensitivity to income → defensive; Typical examples: food, utilities, healthcare, household staples.
Growth industry test: Expansion driven by structural change, faster than the economy over the long run; Growth is not the same as cyclical or defensive. Check what the question is asking.
Profit sensitivity: Higher fixed costs (operating leverage) → profits swing more than sales; Adds to cyclicality for industries such as airlines and steel.

How to solve External Factors and Sector Cyclicality questions

Use this order for any question on external factors or cyclicality.

1Read the stem and identify the industry and the change described, such as a new law, an interest rate rise or an ageing population.
2Classify the change: macroeconomic, technological, demographic, governmental or social.
3Decide the direction: does it raise or lower demand, costs or competition for this industry?
4Ask whether the product is a necessity or a postponable, big-ticket or discretionary purchase.
5Label the industry cyclical, defensive or growth, using demand sensitivity to income and the business cycle.
6Check for operating leverage or heavy borrowing that would amplify the effect.
7Match your conclusion to the three options and eliminate the two that contradict it.

Quickest way: Necessity or postponable test

When to use it: Use it when a question asks you to label a sector or pick the most cyclical or most defensive example.

Ask: if incomes fall 10%, would people still buy this?
If yes, call it defensive. If they would delay it, call it cyclical.
If the stem stresses long-run structural expansion, think growth.
Pick the option with the biggest ticket size or the most borrowing dependence as the most cyclical.

Common mistakes in External Factors and Sector Cyclicality

Treating growth and cyclical as opposites.
Both words sound like descriptions of speed.
Fix: Growth describes long-run expansion from structural change. Cyclical describes sensitivity to the business cycle. An industry can be both.
Calling an industry defensive because it is large or stable in size.
Students confuse size with demand sensitivity.
Fix: Judge by what happens to demand when income falls, not by how big the industry is.
Assuming defensive industries never fall in a recession.
The word suggests full protection.
Fix: Defensive means less sensitive, not immune. Use relative language.
Misclassifying the external factor, for example putting a tax change under social.
The categories overlap in everyday speech.
Fix: Taxes, regulation, subsidies and tariffs are governmental. Tastes and lifestyles are social. Age and population mix are demographic.
Ignoring operating leverage when judging cyclicality.
Students focus only on sales sensitivity.
Fix: High fixed costs make profits swing more than sales, so add this to the cyclicality judgment.

Worked examples

Example 1

An analyst studies a luxury car maker and a packaged-food producer during an economic downturn. Which statement best describes them? A. Both are defensive. B. The car maker is cyclical and the food producer is defensive. C. The car maker is defensive and the food producer is cyclical.

Show the solution

Luxury cars are expensive and the purchase can be postponed when incomes and credit fall.
Demand for luxury cars is therefore highly sensitive to the business cycle, so it is cyclical.
Packaged food is a necessity, and demand holds up when incomes fall, so it is defensive.
Option A calls both defensive, which is wrong for the car maker. Option C reverses the labels.

Answer: B

Example 2

A government introduces a stricter emissions rule and the population in a country is ageing. Which classification of these two influences is most accurate? A. Governmental and demographic. B. Social and macroeconomic. C. Technological and governmental.

Show the solution

A new emissions rule is a regulation set by government, so it is a governmental factor.
Population ageing is a change in the age structure of the population, so it is a demographic factor.
Option B labels them social and macroeconomic, which does not fit either.
Option C labels the ageing trend as technological or governmental, which does not fit either.

Answer: A

Exam tips

Questions are standalone with three options, so look for the label that matches how demand reacts to income and cut the other two.
Watch for words like necessity, discretionary, big-ticket and postponable. They signal the intended answer.
Do not assume a growth industry is safe in a downturn. Check the stem for the cycle link.
Match each external factor to its group before reading the options. This avoids being pulled toward a plausible-sounding distractor.

Practice questions from Industry and Competitive Analysis

External Factors and Sector Cyclicality: frequently asked questions

What is the difference between cyclical and defensive industries?

Cyclical industries see sales and profits move strongly with the business cycle, usually because their products are discretionary or postponable. Defensive industries sell necessities, so demand and earnings are steadier.

Is a growth industry the same as a cyclical industry?

No. Growth describes long-run expansion driven by structural change. Cyclical describes sensitivity to the economic cycle. An industry can be a growth industry and still be cyclical.

What external factors affect industry growth?

Five groups: macroeconomic, technological, demographic, governmental and social. A PESTEL-style checklist helps you cover them in an answer.

How do technology and regulation affect industry analysis?

Technology can create new industries, disrupt old ones and change entry barriers. Regulation, taxes, subsidies and trade rules can raise or lower costs and demand. Both can change an industry's growth and profit outlook.