ABU DHABI, Sept 25 (Reuters) - Abu Dhabi sovereign

wealth fund ADQ opened order books for a dual-tranche

benchmark-sized bond on Wednesday with the deal expected to

price the same day, a term sheet for the offering showed.

ADQ, formally known as Abu Dhabi Developmental Holding Co,

set early price guidance for a seven-year tranche at 115 basis

points (bps) over U.S. Treasuries (UST), and at 150 bps over UST

for a 30-year portion, according to the term sheet seen by

Reuters.

Abu Dhabi's smallest, but still sizeable, wealth fund raised

$2.5 billion in its debut bond sale in April, attracting strong

demand from global investors that allowed it to tighten pricing

at launch.

It had $225 billion in assets under management at the end of

June, according to an investor presentation reviewed by Reuters.

Abu Dhabi Commercial Bank (ADCB), BofA Securities, Bank of

China, BNP Paribas, First Abu Dhabi Bank, JPMorgan ( JPM ), Mizuho are

acting as joint global coordinators and joint bookrunners on the

bond sale.

Benchmark-sized is typically understood to mean at least

$500 million.

ADQ is fully owned by the Abu Dhabi government, which holds

more than 90% of the United Arab Emirates' oil reserves, and has

centred its investment focus primarily on domestic and regional

assets so far.

In recent years, Abu Dhabi has accelerated efforts to

diversify its economy away from hydrocarbons, leaning on its

vast wealth and sovereign funds to boost non-oil growth, develop

national champions and attract foreign investment.