Onex to Present at UBS Best of Americas Conference

TORONTO, ONTARIO--(Marketwire - Sept. 6, 2011) -

All amounts in U.S. dollars unless otherwise stated.

Onex Corporation (TSX:OCX) announced that Seth Mersky, a Managing Director at Onex, will present at the UBS Best of Americas Conference in London, England at approximately 1:20 p.m. BT on September 8, 2011 (8:20 a.m. ET).

An on-line replay will be available following the conclusion of the live broadcast. A link to the live webcast and replay will be available under the Investor Information section of the Company's website at www.onex.com.

About Onex

Onex is one of North America's oldest and most successful investment firms committed to acquiring and building high-quality businesses in partnership with talented management teams. Onex manages investment platforms focused on private equity, real estate and credit securities. In total, the company manages approximately $14 billion, of which $9 billion is third-party capital. As well, Onex invests its own capital directly and as a substantial limited partner in its Funds.

Onex' businesses have assets of $41 billion, generate annual revenues of $34 billion, and employ approximately 210,000 people worldwide. Onex shares trade on the Toronto Stock Exchange under the stock symbol OCX. For more information on Onex, visit its website at www.onex.com. The Company's security filings can also be accessed at www.sedar.com.