When money rotates into a sector, industry or style ETF, does buying it beat SPY...
https://coil.trade/learn/research/does-buying-a-sector-etf-that-money-is-rotating-into-beat-the-market/fullOverview
When money rotates into a sector, industry or style ETF, does buying it beat SPY over the next 20 sessions? Two rules: every Friday buy the top 3 of 33 sector and industry ETFs by their 10-session change against SPY; or buy the receiving ETF of a pair when its ratio turns up from the bottom 20% of its own history. Pre-registered Backtrader backtest, 10 years of daily bars, sector, industry and style ETFs and SPY (2016 to 2026-10-28) — verdict: INCONCLUSIVE.