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S&P 500 Performance On September 17th's

|Includes: SPDR S&P 500 Trust ETF (SPY)

September 17th's historically do not offer positive performance. Starting all the way back in 1996 it's been virtually straight down. Contrarians?

To add a bit of additional context - Monday's in September are the worst performing day of the week on a Friday Close to Monday Close basis.