What does history say about September?
Backtest of 2013–2025:
• September avg: -3.08%
• Median: -3.12%
• Positive Septembers: 5/13
More interesting: when August gained 20%+, September was negative in both cases:
2017: Aug +65.32% → Sep -7.44%
2013: Aug +30.42% → Sep -1.76%
Historical setup: bearish September bias.
Not a prediction—just the data.











