The sale, which is still subject to certain financing conditions, is expected to close by the end of the first quarter.
Onex made a C$318m preferred equity investment in RSI in October 2008.
On completing the deal Onex will have received proceeds of around C$471m, which equals a 1.5 times cash multiple and 11 per cent rate of return.
Onex’ portion of the proceeds would then be around C$186m, it said.
Anthony Munk, managing director of Onex, said, “We’re pleased to have invested alongside RSI’s founder and management team and we wish them continued success.”
Onex, based in Toronto, has $14bn of assets under management, while its businesses have assets of C$43bn, generating annual revenues of C$37bn.
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