Global GDP forecast 0.9% for 2026 — down 0.5pp. First post-Hormuz forecast from a multilateral institution. Hormuz Day 86. Transit down 97%. The assumption behind most internal forecasts was written before either was true.
On 14 April the IMF published its World Economic Outlook — the first post-Hormuz global growth forecast from a multilateral institution. Global GDP revised to 2.8%. Euro area revised to 0.8%. Advanced economies to 1.4%. Hormuz Day 86. Transit down 97%.
The publication date is not the preparation window. The six weeks before it were. Most Q3 and Q4 forecasts locked during those six weeks were ratified against the January number the IMF has now officially retired.
A 0.5pp global GDP cut is a rounding variance on its own. It has happened 11 times since 2000 and 9 of them were absorbed without margin guidance changes. This is not one of those nine.
What is different is the arrival sequence. In 14 trading days: the IMF print (14 April), the ECB decision (17 April), Brent reprice against the Dallas Fed 2Q-closure scenario of $132. Three revisions to three inputs, all downside, all landing before Q2 earnings prep. There is no planning quarter with three independent revisions of this direction that industrial forecasts have cleanly absorbed. 2008 Q4 is the closest analog and the working assumption it broke was benign.
The leading indicator already moved. European industrial capital goods order intake softened 1.8pp in March — ahead of the IMF print, consistent with a 2–3 quarter lead on GDP actuals. The order book is the signal; the WEO is the acknowledgement. The Q3 forecast is being validated against an intake series that has already begun the compression the IMF has now made official.
The diagnostic reads your Q3/Q4 assumptions against the IMF baseline and the ECB decision. Twelve minutes.
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