Asciano shares rose 4c to $5.08 as speculation of a bidding war for Asciano outweighed the bad news. TPG and the Credit Suisse and GE-backed Global Infrastructure Fund, which launched Mon- day's $4.40-a-share bid, declined to comment on their next move. But the market has all but laughed off the low-ball offer. Citi called it an "April Fool's Day prank".