ETF Ownership Crowding
In plain terms
Stocks with disproportionately high ETF ownership experience predictable price dislocations when ETFs rebalance, creating short-term mean-reversion opportunities.
How it works
Stocks with high ETF ownership are more correlated with their ETF basket and more exposed to non-fundamental demand flows. When a stock becomes over-owned by ETFs relative to its size, mean-reversion from ETF rebalancing creates predictable short-term price dislocations.
Live results
0 times picked on its own · 39 times inside a blend (39 beat the stock) · updated 2026-07-06Data dependencies
- Daily prices
Adjusted-close OHLCV for every US-listed ticker; primary price feed.
- ETF holdings
ETF holdings and N-PORT constituent-weight panel.
Expected edge
- Tested over
- 2000-2012 (Ben-David-Franzoni-Moussawi)
ETF-crowded stocks revert ~1-2% over 5-20 days after ETF-driven dislocation events.
Related families
Stocks in sectors with the strongest relative strength versus the S&P 500 tend to outperform those in the weakest sectors over the next 1-3 months.
Whether the market overall is trending up or down conditions how strongly sector leadership translates into individual stock performance.
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