Weather. Moves retailers, utilities, insurers, agriculture, and the seasonal adjustment of the data everyone else trades.
What to watch: NOAA forecasts; heating and cooling degree days. It arrives daily, and the effect typically lasts weeks.
It sits in tier 4 — Stock and sector specific: Moves one company or one group, not the market. Any factor here becomes tier one if it gets large enough — a bank failure and a pandemic both started as somebody's sector news.
Its neighbourhood
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