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24-Jan-2020

ISM® Makes Annual Adjustments to Seasonal Factors for Manufacturing PMI®, Non-Manufacturing NMI® and Diffusion Indexes

TEMPE, Ariz., Jan. 24, 2020 /PRNewswire/ -- Based on input from an independent expert, Institute for Supply Management® (ISM®) recently announced the completion of its annual adjustments to the seasonal factors used in the monthly ISM® Manufacturing Report On Business® and the monthly ISM® Non-Manufacturing Report On Business®. Purchasing managers and economists who track these indexes will note that changes are effective with the January 2020 ISM® Manufacturing Report On Business®, which is scheduled to be released on February 3, 2020, and the January 2020 ISM® Non-Manufacturing Report On Business®, which will be released on February 5, 2020.

Seasonal adjustment factors are used to allow for the effects of repetitive intra-year variations resulting primarily from normal differences in weather conditions, various institutional arrangements, and differences attributable to non-movable holidays. It is standard practice to project the seasonal adjustment factors used to calculate the indexes one year ahead (2020).

As in previous years, the X-13-ARIMA program was used to develop the revisions to the Manufacturing and Non-Manufacturing indexes for January 2012 through December 2019, as well as the 2020 projected seasonal factors. The 2020 seasonal factors will be recomputed when the actual data are known in early 2021. Projected seasonal factors for 2020 are shown below.

See: ismrob.org

2020 Seasonal Adjustment Factors for ISM® Manufacturing Indexes



New Orders

Production

Employment

Inventories

JAN 20

0.999

0.980

0.960

0.999

FEB 20

1.072

1.058

0.987

1.037

MAR 20

1.082

1.013

0.996

1.024

APR 20

1.071

1.062

1.022

1.012

MAY 20

1.074

1.041

1.037

0.992

JUN 20

1.005

1.014

1.046

0.989

JUL 20

0.994

0.992

1.022

1.001

AUG 20

0.938

0.988

1.007

1.034

SEP 20

0.967

0.980

0.985

1.013

OCT 20

0.955

0.998

0.990

0.987

NOV 20

0.937

0.982

0.991

0.963

DEC 20

0.925

0.920

0.957

0.947

To compute the PMI®:

1)  Calculate the unadjusted diffusion index for New Orders, Production, Employment and Inventories. For Supplier Deliveries, which are not adjusted, it will be percent higher or slower plus one half of the percent same or unchanged.

2)  Divide each unadjusted diffusion index by its seasonal factor.

3)  Add all five index numbers together and divide by five.

To compute other indexes, follow steps #1 and #2 above for each indicator.

2020 Seasonal Adjustment Factors for ISM® Non-Manufacturing Indexes



Business Activity

New Orders

Employment

Prices

JAN 20

0.924

0.921

0.971

0.998

FEB 20

1.079

1.042

0.969

1.011

MAR 20

0.997

1.006

1.001

1.040

APR 20

1.095

1.079

0.988

1.043

MAY 20

1.053

1.020

1.035

1.046

JUN 20

0.996

1.041

1.056

1.009

JUL 20

0.956

0.952

1.035

1.007

AUG 20

0.975

1.000

0.967

0.979

SEP 20

1.022

1.019

0.987

1.000

OCT 20

1.015

0.971

1.012

0.976

NOV 20

0.967

1.001

0.985

0.955

DEC 20

0.953

0.946

0.996

0.937

To compute the NMI®:

1)  Calculate the unadjusted diffusion index for Business Activity, New Orders and Employment (percent higher or up plus one half of the percent same or unchanged). For Supplier Deliveries, it will be percent slower plus one half of the percent same or unchanged.

2)  Divide each unadjusted diffusion index by its seasonal factor.

3)  Add all four index numbers together and divide by four.

To compute other indexes, follow steps #1 and #2 above for each indicator.

The revised breakeven points for the overall economy will be released by February 3, 2020.

About ISM® Report On Business®
The ISM® Report On Business® is considered by many economists to be the most reliable near-term economic barometer available. It is reviewed regularly by top government agencies and economic and business leaders for its timely, accurate information. The Manufacturing and Non-Manufacturing ISM® Report On Business® is published monthly by Institute for Supply Management®. Each month, both reports are compiled from responses to questions asked of purchasing and supply executives across the country and reflects change, if any, in the current month compared to previous months.

About Institute for Supply Management®
Institute for Supply Management® (ISM®) serves supply management professionals in more than 90 countries. Its 50,000 members around the world manage about $1 trillion in corporate and government supply chain procurement annually. Founded in 1915 as the first supply management institute in the world, ISM® is committed to advancing the practice of supply management to drive value and competitive advantage for its members, contributing to a prosperous and sustainable world. ISM® leads the profession through the ISM® Report On Business®, its highly regarded certification programs and the ISM® Mastery Model™. This report has been issued by the association since 1931, except for a four-year interruption during World War II.

For a historical data subscription, please contact Kristina Cahill: kcahill@instituteforsupplymanagement.org

Contact:

Kristina Cahill


Research Manager


Report On Business® Analyst


Tempe, Arizona


480-455-5910


kcahill@instituteforsupplymanagement.org

 

 

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SOURCE Institute for Supply Management

ISM® Makes Annual Adjustments to Seasonal Factors for Manufacturing PMI®, Non-Manufacturing NMI® and Diffusion Indexes

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Last Updated: 24-Jan-2020