The fund measures the performance of equity securities issued by companies involved in cybersecurity and technology, which includes hardware, software, products, and services, as identified by RBICS. Revenue is a key factor in determining a companys inclusion in the portfolio, those that derive 50% or more of their revenue from the industry make the cut. Included are customer premises network security equipment producers, enterprise network security software providers, and aerospace and defense IT service providers. XHAK covers both developed and emerging markets and includes all market-caps. The index is reconstituted annually, rebalanced semi-annually, and weighted by market-cap (with individual constituents capped at 4% of the index weight).