PMI in gold trading
A PMI, or Purchasing Managers' Index, is a monthly business survey where 50 separates growth from contraction; US ISM surprises can move gold via yields.
Also called Purchasing Managers' Index, ISM manufacturing, ISM services, Flash PMI
A PMI (Purchasing Managers’ Index) is a survey-based indicator of business conditions. Purchasing managers report whether orders, output, employment, prices and deliveries are rising or falling. A reading above 50 means expansion, below 50 contraction. In the US, the ISM manufacturing and services PMIs (10:00 a.m. New York time, early in the month) and the flash S&P Global PMIs are the main releases.
How it applies to gold trading
PMIs are early signals of growth and inflation. A weak ISM reading, especially in new orders and employment, raises rate-cut expectations and can support gold. The prices-paid component is an inflation clue: a jump can lift yields and pressure gold even if overall activity is soft.
The ISM services index has become more important because services drive most US activity and inflation. Surprises against consensus, not the level itself, move the market.
Worked example
Example (hypothetical numbers): consensus for ISM manufacturing is 49.5 and the release is 47.2, with prices paid down. Yields fall and gold rises from 4,008 to 4,021 within 15 minutes. A month later the headline beats at 51.0 but prices paid jumps 6 points; gold falls $9.
A common mistake
Treating 50 as a trading signal. What matters is the change against expectations and the details in the sub-indices.
See also: GDP, Data surprise, Economic calendar, Stagflation.
Frequently asked questions
What does a PMI below 50 mean?
That more businesses report deteriorating conditions than improving ones, indicating contraction in that sector.
Does the ISM PMI move gold?
It can, especially when it surprises consensus or when the prices-paid component changes sharply, through its effect on yields and rate expectations.
What is the difference between the ISM and flash PMIs?
Both survey purchasing managers. Flash PMIs come out earlier in the month as a preliminary estimate; ISM indices are released early the following month and have a longer history in the US.