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Module 5 · Lesson 2/6

Understanding Economic Data

GDP, inflation, the jobs report, PMIs and sentiment surveys – which economic data move markets, how to read them and why the forecast matters more than the number.

4 min read Intermediate 11 exercises

Key takeaways

  • Gross domestic product measures total economic output. Two consecutive quarters of shrinking GDP are often called a technical recession.
  • Inflation and jobs data matter most to markets, because they shape central bank decisions.
  • Purchasing managers' indices and surveys are leading indicators. A PMI above 50 signals expansion.
  • Markets react to the gap between the actual figure and the consensus forecast.
  • The stock market looks ahead – prices often turn before the economic data do.

Every working day, somewhere in the world, new economic data are released: jobless claims, inflation, surveys of purchasing managers, retail sales. Some barely move markets, others send prices jumping within seconds. This lesson shows which data really matter and how to read them.

The business cycle

Economies don’t grow in a straight line, but in waves. Periods of strong growth alternate with downturns:

The business cycle trend growth Expansion Peak Slowdown Recession / trough Recovery
A stylised business cycle. In reality, phases vary in length and can never be predicted precisely. Since World War II, a full US cycle has typically lasted several years.

A common rule of thumb defines a recession as two consecutive quarters of falling GDP. In the US, a committee of the National Bureau of Economic Research (NBER) officially dates recessions using a broader look at output, jobs and income – usually months after the fact.

The key data

Output

Gross domestic product (GDP) measures the value of all goods and services produced in a country. It’s published quarterly; US figures are annualised (the quarterly change scaled to a yearly rate), European figures are not. GDP is the most comprehensive measure, but also a late one: it describes what has already happened.

Inflation

Consumer prices (inflation) have been the most watched data since 2021, because they drive interest rate policy. Key releases:

  • the headline rate,
  • the core rate excluding volatile food and energy prices, showing the underlying trend,
  • in the US the CPI in mid-month and the Fed’s preferred PCE price index at month-end.

Jobs

The US employment report (nonfarm payrolls) usually comes out on the first Friday of each month and is one of the most important dates on the market calendar. It shows how many jobs were added outside agriculture, plus the unemployment rate and wage growth. A strong labour market supports spending but can also fuel inflation via rising wages. Weekly initial jobless claims give a more timely signal.

Leading indicators

Because GDP and jobs data lag, investors watch leading indicators that tend to turn earlier:

Indicator What it measures How to read it
ISM / PMI Survey of purchasing managers on orders, output, hiring above 50 = expansion, below 50 = contraction
Consumer sentiment University of Michigan, Conference Board surveys hints at future spending
Durable goods orders New orders for long-lasting goods future production
Housing starts and permits New home construction very rate-sensitive, early mover
Yield curve Gap between long and short-term rates inversion as a recession warning

Expectations beat the number

As with company earnings, markets don’t react to the number itself, but to the difference from expectations. Before each release, news agencies survey economists for a consensus forecast. If the figure matches consensus, not much happens. A big surprise moves markets.

The market is ahead of the economy

Stock prices reflect expected future profits. That’s why markets often turn before the data do. In March 2009, one of the longest bull markets in history began while unemployment and bankruptcies were still rising. In March 2020, stocks bottomed before the worst pandemic data had even been released.

The economic calendar

Key releases are scheduled well in advance. An economic calendar lists them with time, prior value and consensus. The biggest market movers:

  • US jobs report (usually the first Friday of the month),
  • US CPI (mid-month),
  • Fed and ECB rate decisions (eight times a year each),
  • ISM and PMI surveys (start of the month, flash PMIs mid-month),
  • GDP estimates (quarterly).

Summary

Economic data show where an economy stands in its cycle. GDP and jobs describe the situation, inflation data shape monetary policy, and leading indicators like PMIs hint at the direction. Markets react to surprises versus consensus and anticipate the economy. Once you understand that, you’ll stop being surprised when good news sends prices lower.

Time to practise

11 short exercises on this lesson – mistakes come back at the end. Then the lesson is complete and joins your review queue.

Test your knowledge

0/3

01The manufacturing PMI rises from 47 to 49. What does that mean?

Below 50 means contraction, above 50 expansion. From 47 to 49 means fewer firms report declines – conditions are improving, but not yet growing.

02The US jobs report shows far more new jobs than expected. Why might stocks still fall?

Strong data can raise fears of persistent inflation and higher-for-longer rates. Then what matters to stocks isn’t the strong economy but the rate outlook.

03Why does the stock market often rise while the economy is still in recession?

Prices reflect expectations. In March 2009 and March 2020, markets turned while economic data were still dreadful.

Terms from this lesson

RecessionGDPInflationPMIYield curve