Onex has hired Goldman Sachs, Morgan Stanley and Citigroup to find a buyer for the company, said Reuters, citing two people familiar with the matter.
The firm acquired The Warranty Group in 2006 in a $710m deal that included $510m of equity.
Last month Onex made an overall two-times cash multiple by selling its remaining 60 per cent stake in steel mill services business TMS International for $410m.
Earlier in 2013 it was reported that Onex was looking to raise $4.5bn for its next private equity fund.
The firm tapped investors for $4.7bn for its Onex Partners III vehicle in 2009, and was said to plan to stick to that fund’s strategy of large-cap North American investments.
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