FirstService, one of the largest property managers in the world, has bought commercial real estate consultancy Colliers International.
Colliers said that FirstService's bid meant that, given the level of debt within the company, there was minimal value, if any, to be attributed to its shares.
"The transaction completed yesterday will realise no value for the ordinary shares of the company," it said.
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Colliers said that the deal meant full continuation of the group's business for its clients and staff.
It shares have now been suspended from trading.
