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

RB portfolio overlap matters because owning multiple funds with the same underlying stocks reduces true diversification. With 1863 holdings, RB may share significant positions with broad-market funds.

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