The S&P 500 (Index: SPX) rebounded back above its mean trend in August 2026 after briefly breaking below it.
Through the end of trading on Monday, 31 August 2026, the index' value was just slightly below its trailing 20-day moving average. Meanwhile, the moving average itself was about 96 points (or about 1%) above the level the mean trend trajectory the index has established during its current period of relative order, which has largely held in the 32 months since 31 December 2023.
The following chart visualizes the relationship between the value of the S&P 500 and its underlying trailing year dividends per share from 29 December 2023 through 31 August 2026:
Previously on Political Calculations
- How Big is the AI Bubble and Is It Really a Bubble?
- The Definition of a Bubble
- The Ultimate Sell Signal
- What Caused the Dot Com Bubble to Begin and What Caused It to End?
- The Black Monday Stock Market Crash Explained
- Not Necessarily Wrong But Useful
Image Credit: Microsoft Copilot Designer. Prompt: "An editorial cartoon of a Wall Street bull and bear bouncing on a trampoline while looking at a stock chart labeled 'S&P 500'".

