The First Trust Alerian U.S. NextGen Infrastructure ETF (RBLD), previously known as the First Trust Global Engineering and Construction ETF, aims to closely match the overall performance—encompassing both price appreciation and income generation—of the Alerian U.S. NextGen Infrastructure Index. This objective is pursued prior to the deduction of the Fund's own operational fees and expenses. Operating under a passive indexing strategy, the Fund generally commits at least 90% of its total net assets (including any funds borrowed for investment) to common stocks and Real Estate Investment Trusts (REITs) that are components of the underlying Index. Its core purpose is to replicate the Index's returns as accurately as possible, before accounting for its own costs. The Alerian U.S. NextGen Infrastructure Index is owned, created, managed, and financially supported by VettaFi LLC, also referred to as VettaFi or the Index Provider. VettaFi, in its capacity as the Index Provider, holds the authority to amend the Index's methodology at any given time, provided advance written notification is issued.