Men's Underwear Index
Alan Greenspan's least glamorous — and most reliable — leading indicator.
Greenspan's Tell
Alan Greenspan, as Fed Chairman, kept an eye on men's underwear sales. The logic is straightforward: underwear is invisible, nobody sees it, and replacing it is easy to defer when money is tight. When sales drop, men have already decided they're worried — before that anxiety shows up in any survey.
Behavior Over Self-Report
Consumer sentiment surveys ask people how they feel. Survey respondents tend to anchor to what they're supposed to say. Men buying fewer underwear can't lie. Actual spending decisions are more honest than reported confidence — which is why this series, buried in the BLS Producer Price Index, has predicted softness in consumer spending before the headline data confirmed it.
Nobody Games an Underwear Index
GDPv2 tracks this via BLS series WPU03810761. The reason it works as a leading indicator is exactly because it's boring — no one is watching it, so no one is managing to it. When it turns down, something real is happening.
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