Data: History of Market (historyofmarket.com), CC BY 4.0. Historical values are the publisher’s weekly terminal consensus series. Daily values separately blend FY1/FY2 consensus earnings using ETF holdings. The upstream terminal vendor is not identified; this is not an official Nasdaq valuation series.

January 2005–July 2006 is missing because the publisher flags inconsistent constituent coverage. The calendar axis stays continuous; no values are filled in. The 2001 spike reflects depressed expected earnings, and the available history starts after the March 2000 market peak.

The daily calculation starts on 5 August 2026. On that date it reads 22.41x versus 22.37x historically, a 0.18% difference. This single overlap does not establish identical methodology. Updates retain the last valid snapshot if the source fails, and the page flags observations over seven days old.