Is AI-era skepticism unusual? Valuation vs two investor surveys, 1996-2026

source: Yale ICF / Shiller US Valuation Confidence Index (monthly survey; 6-month average; lower = more think the market is overvalued); Shiller CAPE (shillerdata.com ie_data, to Oct 2026); AAII Sentiment Survey (weekly, to Oct 15 2026) • transform: Shaded: Sep 1999-Aug 2000, Oct 2006-Oct 2007, Sep 2025-now. Yale data to Aug 2026. • drawn 2026-10-21 02:57 UTC