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Philadelphia Precipitation × SPY 20-day SMA
When phl_precip and spy_sma_20 both have unusually large moves in the same direction within 7 days of each other, the market has followed in that same direction 100% of the time over the next 180d in our 2010-2019 records (16 examples), and 100% of the time in held-out 2020+ data (10 examples). Held up both periods.
$p—cross-indicator · out-of-sample
Philadelphia Precipitation × SPY 20-day SMA
When phl_precip and spy_sma_20 both have unusually large moves in the same direction within 7 days of each other, the market has followed in that same direction 100% of the time over the next 180d in our 2010-2019 records (16 examples), and 100% of the time in held-out 2020+ data (10 examples). Held up both periods.
ReadReliable bullish pair
Val. hit rate100%
Held-out n10
standardpoorly.comas of 2026-05-06