HIYY overlap analysis compares holdings with other ETFs to identify shared positions. Overlapping holdings can lead to unintended concentration risk in a portfolio.

HIYY portfolio overlap matters because owning multiple funds with the same underlying stocks reduces true diversification. With 14 holdings, HIYY may share significant positions with broad-market funds.

HIYY overlap tool lets you enter any other ETF ticker and see the exact overlap percentage and shared holdings. HIYY tax-loss harvesting finds highly correlated but non-identical funds.