He is the son of Gina Rinehart and grandson of the late mining magnate Lang Hancock.
[7] In 2010, Hancock and his sister, Bianca Rinehart, and half-sister, Hope Welker, launched action in the Supreme Court of New South Wales against their mother in relation to the operation of a family trust fund established by their late grandfather.
[6] The NSW Supreme Court handed down its decision by appointing Bianca Rinehart as trustee of the Hope Margaret Hancock Trust.
[10] Hancock appeared on the Financial Review Rich List for the first time in 2020 with a net worth assessed at A$2.05 billion.
[11] Hancock appeared on the Forbes list of Australia's 50 richest people for the first time in 2017, with a net worth of US$5.00 billion, held jointly with his sister, Bianca Rinehart, and half-sisters, Ginia Rinehart and Hope Welker.