XHB provides quirky and diffused exposure to homebuilders. It selects US firms by market-cap, then equally weights its components--an approach that results in a portfolio that tilts away from companies that dominate the industry. The fund reaches well beyond industry bounds by our lights: Most holdings land outside the homebuilding category. While XHB doubtlessly provides more diversification, investors looking for hefty stakes in leading names won`t find them here. Index rebalancing occurs quarterly.