TOKYO, Jan. 7 -- Now they are, now they aren't.

In the haven of regulatory stability that is the Trump administration's waning days, the New York Stock Exchange is now again delisting three major Chinese telecom companies.

Trading in China Mobile, China Telecom and China Unicom Hong Kong will now halt on Monday, January 11, at 4 a.m., New York time.

The NYSE said it had received "new specific guidance" on Tuesday from the Office of Foreign Assets Control of Steven Mnuchin's Treasury Department.

Initially, on December 31, the bourse said it would delist the three stocks between January 7 and January 11, finding the businesses "are no longer suitable for listing."

But on January 4 it changed tack and said the stocks would continue to b...