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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesPMI and factory-orders data are useful together, but they measure different things. A PMI is a survey-based diffusion index showing whether selected conditions broadly improved or worsened from the prior month. The Census Bureau’s Manufacturers’ Shipments, Inventories, and Orders report (M3) gives dollar-valued estimates of manufacturing orders, shipments, unfilled orders, and inventories. Neither release, by itself, proves that manufacturing or the wider economy is expanding or contracting.
What does a PMI above 50 mean?
Fifty is the diffusion index’s no-change boundary—not 50% growth. In the cited J.P. Morgan Global Manufacturing PMI methodology, the index is calculated as the percentage of respondents reporting an increase plus half the percentage reporting no change. A reading above 50 indicates that increases predominate; below 50 indicates that decreases predominate. The size of the reading is not a percentage change in output, and the index does not tell you the absolute level of production.
PMI respondents report whether conditions such as orders or output rose, fell, or were unchanged compared with the previous month. That makes PMI a measure of reported direction, not a direct count of factory output in units or dollars. S&P Global describes national panels of around 400 companies for its surveys; J.P. Morgan’s global manufacturing methodology describes surveys in more than 40 countries involving around 13,500 companies. Those figures refer to those programs, not to every PMI. See J.P. Morgan Global Manufacturing PMI survey methodology and S&P Global’s PMI overview.
What is the difference between ISM and S&P Global PMI?
Both are survey-based diffusion measures, but they are not identical indexes. The provider, survey construction, and composite formula matter—so name the particular series when comparing readings or following a headline.
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| Series | Composite construction | How to use the distinction |
|---|---|---|
| S&P Global manufacturing PMI | New orders 30%, output 25%, employment 20%, supplier delivery times 15% (inverted), and stocks of purchases 10%, according to S&P Global’s PMI FAQ. | A change in one component can affect the headline according to its weight; supplier delivery times are inverted in the composite. |
| ISM manufacturing PMI | Five equally weighted diffusion indexes. ISM identifies seasonal adjustment for new orders, production, employment, and inventories. | Do not assume the ISM headline uses S&P Global’s weights or formula. |
For the respective methodologies, consult S&P Global’s PMI data FAQ and ISM’s About This Report.
What does the Census factory-orders report measure?
The Census Bureau’s M3 report covers manufacturers’ shipments, new orders net of cancellations, unfilled orders (backlog), and inventories. Inventory measures include materials and supplies, work in process, and finished goods. These are dollar-valued manufacturing statistics, unlike a PMI’s survey diffusion index.
Census describes reported new orders as shipments plus the net change in unfilled orders from the previous month. That relationship helps explain why a rise in orders is not automatically evidence of stronger shipments in the same month: orders can add to the backlog if work has not yet shipped. The M3 About the Surveys documentation explains the report’s scope, while the M3 Unfilled Orders survey describes the relationship among shipments, orders, and backlog.
How should you interpret a jump in factory orders?
Start by identifying which release and series you are looking at, then read the headline alongside related measures. A single monthly increase is a clue to investigate, not a stand-alone verdict about manufacturing.
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- Check the coverage. The advance durable-goods report generally appears about 18 working days after the reference month; the full M3 report, covering durable and nondurable manufacturing, generally appears about 23 working days after it, according to Census. Do not treat the advance durable-goods figure as the complete M3 picture.
- Read the companion measures. Compare orders with shipments, unfilled orders, and inventories. Rising orders alongside rising shipments may tell a different story from rising orders that mainly add to backlog. Inventory changes add context about materials, work in process, and finished goods.
- Compare more than one observation. Look at recent monthly releases and, where appropriate, a multi-month change. S&P Global has used three-month-over-three-month changes in official data for comparisons because they are less volatile than month-on-month changes while remaining more timely than annual changes. This is an analytical approach, not a universal rule for every series.
- Keep the measure in its own units. Do not compare a PMI-point change with a percentage change in dollar-valued factory orders as though they measured the same quantity.
The purpose of M3, as the U.S. Census Bureau explains, is to provide monthly statistical data on current economic conditions and indications of future production commitments in manufacturing. That makes orders and backlog informative, but neither alone establishes what factories ultimately produced or shipped.
How do release timing and reference months affect the comparison?
The releases cover different evidence and arrive on different schedules. ISM says its manufacturing PMI is released on the first business day of the month at 10:00 a.m. Census says the advance durable-goods report generally arrives about 18 working days after the reference month and the full M3 report about 23 working days after it. Because calendars and publication dates can vary, check the live schedules for the specific release rather than assuming a date. ISM’s PMI reports and calendar lists its releases.
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When comparing two headlines, confirm that they refer to the same reference period and understand whether the Census number is the advance durable-goods report or full M3. A PMI available earlier may be useful as a timely survey signal, but it is not a substitute for the later dollar-valued report.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.A practical reading sequence
- Name the release and reference month. State whether the Census figure is the advance durable-goods report or full M3, and identify the PMI provider and series.
- Classify the evidence. Is the headline a survey diffusion index or a dollar-valued Census series? Interpret each on its own terms.
- Look inside the headline. For PMI, check available components such as new orders, output, employment, inventories, and supplier delivery times. For M3, review shipments, backlog, and inventories alongside orders.
- Place the result in context. Compare with recent observations or a suitable multi-month measure, and note any release-specific adjustments or revisions where the documentation supports doing so.
- Draw a bounded conclusion. Describe what this release says about its measure; do not call one observation proof of a broad expansion, contraction, or turning point.
For a comparison focused on official data trends, S&P Global’s PMI and ISM survey comparisons discusses three-month-over-three-month changes as a way to reduce monthly volatility.
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