Revisions: the number that changes after the trade

[Amanhasnoname]

Many economic releases include revisions to previous figures. The market looks at the headline, the revision, and the details all at once, and the net reaction depends on how they combine.

A strong headline with a large downward revision to the prior month can produce a reversal within seconds. A weak headline offset by a big upward revision can do the opposite. The first tick often reflects only one of the components.

For scalpers, that means the early reaction can be misleading. Not knowing the previous figure, and the size of the revision, leaves a gap in the picture.

A calendar that shows the revised prior number alongside the new one helps. Better still is understanding which components the market is watching, such as wages in a jobs report.

Preparing a short note before major releases, with the headline expectation, the prior figure, and the key detail, takes five minutes and improves reaction decisions or the decision to stay out.

How much preparation goes into a major release, and does it change the outcome?