William Ackman of Pershing Square Capital Management, the largest shareholder of Ceridian Corp, is gearing up for another corporate battle, according to the Wall Street Journal. Mr Ackman is expected to say he opposes the $5.3bn sale of the US human-resources and transaction-outsourcing company and that he has hired bankers to find a higher bidder for the company, says the Journal.

This follows an agreement two weeks ago by Ceridian to sell itself for $5.3bn, or $36 per share, to a consortium including Thomas H Lee Partners, the US private equity group, and Fidelity National Financial, the insurance company. Read more