The First Trust Nasdaq Bank ETF is an exchange-traded fund primarily designed to largely track the performance of the Nasdaq US Smart Banks Index. Its main objective is to deliver investment results, encompassing both capital appreciation and income, that generally align with the index's returns, before accounting for the fund's own operational expenses. It accomplishes this by mirroring the underlying securities and their proportional allocations within the Nasdaq US Smart Banks Index, aiming for a performance correlation of at least 95% with that benchmark.