497: Periodic update to fund prospectus
497J: Others
First Trust Nasdaq Clean Edge Smart Grid Infrastructure Index Fund | 497K: Others
N-CSRS: Others
497: Periodic update to fund prospectus
497: Periodic update to fund prospectus
First Trust Nasdaq Clean Edge Smart Grid Infrastructure Index Fund | NPORT-P: Others
First Trust Nasdaq Clean Edge Smart Grid Infrastructure Index Fund | 497K: Others
497J: Others
485BPOS: Post-effective amendment
N-CEN: Others
24F-2NT: Others
N-CSR: Others
First Trust Nasdaq Clean Edge Smart Grid Infrastructure Index Fund | NPORT-P: Others
First Trust Nasdaq Clean Edge Smart Grid Infrastructure Index Fund | 497K: Others
497: Periodic update to fund prospectus
First Trust Nasdaq Clean Edge Smart Grid Infrastructure Index Fund | NPORT-P: Others
N-PX: Others
N-CSRS: Others
First Trust Nasdaq Clean Edge Smart Grid Infrastructure Index Fund | NPORT-P: Others