Corporate digest

Alliance Mineral Assets

UOB Kay Hian has become the second Singapore stockbroker to restrict trading in the stock of lithium miner Alliance Mineral Assets after the counter's rapid run-up over the past few weeks. Alliance has doubled in value in March alone, closing at 39.5 Singapore cents on Wednesday. UOB Kay Hian will require cash for purchases above S$50,000 for the stock, market sources said. Lim & Tan Securities imposed buy and sell limits of S$30,000 on March 27 to control exposure to the counter.

EMS Energy