History of Market · The Chronicle of the U.S. Stock Market historyofmarket.com
S&P 500 · § I
S&P 500 · Annual Returns

Ninety-Nine Annual Verdicts

73 positive years, 26 negative, since 1928.

This page is the landing card for the Ninety-Nine Annual Verdicts chart — one panel inside History of Market, a century-scale editorial chronicle of the U.S. stock market. The interactive visualization, the surrounding S&P 500 narrative, and cross-references to related panels all live on the main chronicle page; this card carries the same canonical data and links through to it.

The underlying dataset is published as a machine-readable JSON endpoint, refreshed automatically by a daily scraper pipeline and held under a CC BY 4.0 licence. You are welcome to read it, cite it, embed it, or hand it to an AI agent for analysis — attribution to History of Market is the only ask.

View the interactive chart → Download the raw JSON

GET /api/sp500/century.json  —  canonical dataset endpoint (application/json, CORS-open).