inversion
One input, two verdicts
The rule
The same input - crude, inflation, a strong rupee - pays one sector and punishes another, so read where in the chain a company sits.
Where it flips
A headline like 'oil is up' feels like one market-wide verdict. Where it misleads: you mark the whole market up or down on a single input. The fix: split companies by whether the input is their revenue or their cost, and expect the sign to flip across the chain.
A macro input is never simply good or bad. Higher crude helps an upstream producer and hurts an airline; a strong rupee helps an importer and hurts an exporter; higher inflation lifts some margins and crushes others. The reader asks where a company sits in the chain - does this input arrive as its revenue, or as its cost?
A worked example
Crude spikes. An upstream oil producer earns more per barrel, while an airline, a paint maker and a tyre firm see their input costs jump. Same barrel of oil, opposite verdicts, decided by where each firm sits in the chain. [illustrative]
How to spot it
- ·one input, opposite effects across two sectors
- ·asking if the input is a firm's revenue or its cost
- ·a strong rupee helping importers, hurting exporters
- ·the same number cheered by one sector, feared by another
The inversion · The same metric meaning opposite things across sectors