When 3+ institutional stock-pickers each open the same brand-new position within 5 trading days, that's smart money quietly piling in. Cross-family pile-ups rank highest — and the entry order is the part a quarterly 13F can never show you.
Layering = independent funds opening the same new position within days. Higher strength = more funds, more families, more AUM. Not financial advice — a map of where institutional money is quietly clustering.