Editing Reaganomics (section)

===Business and market performance===
Nominal after-tax corporate profits grew at a compound annual growth rate of 3.0% during Reagan's eight years, compared to 13.0% during the preceding eight years.<ref>{{cite web|url=https://fred.stlouisfed.org/graph/?g=kag2|title=Corporate Profits After Tax (without IVA and CCAdj)|date=May 30, 2018|access-date=June 13, 2018|archive-date=June 14, 2018|archive-url=https://web.archive.org/web/20180614021357/https://fred.stlouisfed.org/graph/?g=kag2|url-status=live}}</ref> The [[S&P 500 Index]] increased 113.3% during the 2024 trading days under Reagan, compared to 10.4% during the preceding 2024 trading days.<ref>{{cite web|url=https://stooq.com/q/d/?s=%5Espx&c=0&d1=19720120&d2=19890120 |title=^SPX - S&P 500 - U.S. |publisher=Stooq |date= |accessdate=2022-08-19}}</ref> The business sector share of GDP, measured as [[gross private domestic investment]], declined by 0.7 percentage points under Reagan, after increasing 0.7 percentage points during the preceding eight years.<ref>{{cite web|url=https://fred.stlouisfed.org/graph/?g=kbln|title=Shares of gross domestic product: Gross private domestic investment|date=April 27, 2018|access-date=June 16, 2018}}</ref>