{"_license": "Reuse with attribution is welcome; copying the work is not. Data (/api/**.json): CC BY 4.0. Charts, share images, embeds and quotes: free to reuse when credited \"History of Market (historyofmarket.com)\" with a link. No derivative or look-alike sites, no use of the brand names, no citation without the source. Terms: https://historyofmarket.com/license/", "_attribution": "History of Market (historyofmarket.com)", "_canonical": "https://historyofmarket.com/api/sp500/roe.json", "_terms": "https://historyofmarket.com/license/", "updated": "2026-09-26", "average": 14.0, "series": [{"date": "1960-12-31", "value": 10.2}, {"date": "1961-12-31", "value": 9.8}, {"date": "1962-12-31", "value": 10.5}, {"date": "1963-12-31", "value": 11.0}, {"date": "1964-12-31", "value": 11.8}, {"date": "1965-12-31", "value": 12.5}, {"date": "1966-12-31", "value": 13.0}, {"date": "1967-12-31", "value": 11.9}, {"date": "1968-12-31", "value": 12.1}, {"date": "1969-12-31", "value": 11.5}, {"date": "1970-12-31", "value": 9.8}, {"date": "1971-12-31", "value": 10.5}, {"date": "1972-12-31", "value": 11.8}, {"date": "1973-12-31", "value": 13.5}, {"date": "1974-12-31", "value": 14.0}, {"date": "1975-12-31", "value": 11.6}, {"date": "1976-12-31", "value": 13.2}, {"date": "1977-12-31", "value": 13.5}, {"date": "1978-12-31", "value": 14.3}, {"date": "1979-12-31", "value": 15.8}, {"date": "1980-12-31", "value": 14.0}, {"date": "1981-12-31", "value": 13.5}, {"date": "1982-12-31", "value": 10.7}, {"date": "1983-12-31", "value": 11.5}, {"date": "1984-12-31", "value": 13.0}, {"date": "1985-12-31", "value": 11.5}, {"date": "1986-12-31", "value": 10.2}, {"date": "1987-12-31", "value": 13.0}, {"date": "1988-12-31", "value": 16.2}, {"date": "1989-12-31", "value": 15.0}, {"date": "1990-12-31", "value": 13.0}, {"date": "1991-12-31", "value": 11.1}, {"date": "1992-12-31", "value": 11.5}, {"date": "1993-12-31", "value": 13.2}, {"date": "1994-12-31", "value": 15.5}, {"date": "1995-12-31", "value": 16.0}, {"date": "1996-12-31", "value": 16.5}, {"date": "1997-12-31", "value": 17.0}, {"date": "1998-12-31", "value": 16.0}, {"date": "1999-12-31", "value": 17.5}, {"date": "2000-12-31", "value": 14.8}, {"date": "2001-12-31", "value": 7.2}, {"date": "2002-12-31", "value": 8.1}, {"date": "2003-12-31", "value": 12.3}, {"date": "2004-12-31", "value": 15.4}, {"date": "2005-12-31", "value": 16.8}, {"date": "2006-12-31", "value": 17.6}, {"date": "2007-12-31", "value": 16.5}, {"date": "2008-12-31", "value": 8.0}, {"date": "2009-12-31", "value": 12.1}, {"date": "2010-12-31", "value": 14.8}, {"date": "2011-12-31", "value": 14.5}, {"date": "2012-12-31", "value": 13.9}, {"date": "2013-12-31", "value": 15.2}, {"date": "2014-12-31", "value": 15.0}, {"date": "2015-12-31", "value": 13.8}, {"date": "2016-12-31", "value": 13.7}, {"date": "2017-12-31", "value": 15.6}, {"date": "2018-12-31", "value": 17.6}, {"date": "2019-12-31", "value": 16.2}, {"date": "2020-12-31", "value": 13.5}, {"date": "2021-12-31", "value": 20.5}, {"date": "2022-12-31", "value": 18.0}, {"date": "2023-12-31", "value": 18.8}, {"date": "2024-12-31", "value": 19.2}, {"date": "2025-09-30", "value": 18.7, "kind": "partial"}, {"date": "2026-03-31", "value": 20.8, "kind": "estimate", "basisDate": "2025-09-30"}, {"date": "2026-06-30", "value": 23.3, "kind": "estimate", "basisDate": "2025-09-30"}], "source": {"primary": "Long-run EPS and book-value tables", "fallback": "Committed sp500_roe cache for historical ROE", "used": "Historical ROE is preserved; missing recent points are derived as EPS / book value per share; latest EPS beyond book-value date is marked estimate"}, "note": "S&P 500 ROE. Historical cache is preserved to avoid mixing long-run source definitions; missing recent points are derived as EPS / book value per share."}