In my last column I covered the potential sale of Emerald Expositions and the $2bn price tag that owners Onex had out on the business. At the time I commented that either a sale to another private equity firm or a stock market flotation (IPO) were the most likely outcomes. It seems that, with $323.7m of revenue, $22.2m of net income and $63.6 million of adjusted net income, none of the potential buyers were willing to meet the valuation. So in a change of approach, Emerald filed with t...