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S&P 500 index

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The gist

S&P 500 fell 0.4% Tuesday as oil prices climbed. September historically is the index's worst month.

Background

The S&P 500 is a benchmark index tracking about 500 of the largest US companies. Recently, it has been affected by rising oil prices and concerns about inflation, leading to a slip on Tuesday. Additionally, market technicians are cautious because September has historically been the worst month for the index.

How it unfolded

  1. Aug 27, 2026Nasdaq and S&P 500 lifted by Nvidia's forecast, with S&P 500 E-minis up 0.42%.
  2. Aug 28, 2026Equal-weight S&P 500 funds are up 15.95% year-to-date, outperforming cap-weighted funds.
  3. Aug 31, 2026Technicians cautious ahead of September, historically the worst month for S&P 500.
  4. Sep 1, 2026S&P 500 fell 0.4% as oil prices climbed and bond sell-off stoked inflation worries.

Who’s saying what

Analysts
Some Wall Street strategists have raised year-end targets for the S&P 500 due to strong earnings.
Technicians
Market technicians are cautious because September is historically the worst month for the index.

Sources

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