What Is the Business Cycle? Definition and Example
The business cycle is the economy’s repeating pattern of expansion and contraction. Here are the phases, how long they have lasted, and how stocks and sectors behaved.
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What Is the Economic Cycle? Definition and Example
The four phases of the economic cycle, how each tends to affect stocks and sectors, and how to judge where the economy is without guessing.
Key takeaways
- The economic cycle is the recurring pattern of expansion and contraction in output, jobs and profits, usually split into four phases: early, mid, late and recession.
- Different sectors have tended to lead in different phases: cyclicals early, defensives late and in recessions.
- In the 2007–09 recession, the median large financial stock fell 76% peak to trough vs 42.3% for consumer defensive stocks, in Exent’s data.
- Phases are clear only in hindsight; the official US recession dates are set after the fact.
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What is the economic cycle?
It is the rise and fall of economic activity around its long-term trend. In the US, the NBER’s Business Cycle Dating Committee marks the official peaks and troughs, usually months after they happen. The terms economic cycle and business cycle are used interchangeably.
What are the four phases?
| Phase | What the economy does | What has tended to lead |
|---|---|---|
| Early | Recovery from recession; rates low, credit loosening | Cyclicals, small caps, financials |
| Mid | Steady growth; profits rising | Broad market, technology, industrials |
| Late | Growth slowing; inflation and rates up | Energy, materials, defensives |
| Recession | Output and jobs falling | Consumer staples, utilities, healthcare, high-quality bonds |
Example: sectors in the 2007–09 recession
| Sector | Median peak-to-trough fall |
|---|---|
| Financial services | −76.0% |
| Technology | −66.2% |
| Industrials | −59.8% |
| Utilities | −51.1% |
| Consumer defensive | −42.3% |
Source: Exent’s data on today’s largest US stocks that traded then, as of Sep 30, 2026. Defensive sectors still fell sharply, but much less. See how stocks behave in a recession.
Where are we in the cycle, and why does it matter?
Nobody knows for sure in real time. Investors read a mix of evidence: jobs, earnings, the yield curve, credit conditions and inflation. The point is not to time the market but to know which phase your portfolio is built for. The indicators themselves are covered in recession indicators and growth vs value through the cycle.
Common mistakes
- Rotating sectors on a phase call that later proves wrong.
- Assuming phases have fixed lengths.
- Treating defensive sectors as safe: they still fell over 40% in 2008.
Frequently asked questions
There is no fixed length. In the NBER’s dates, US expansions have varied widely in length, and recessions have usually been much shorter than expansions.
In the US, the NBER’s Business Cycle Dating Committee sets the official dates, usually well after the turning point.
Stocks often fall before or early in a recession because markets look ahead. They have also often bottomed before the recession ended.
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Educational content, not investment advice. Examples are illustrative; past performance does not guarantee future results.