Acromec jumped to 17 cents from 9.5 cents, before reaching a high of 20 cents at 11am.
Singapore Exchange Regulation (SGX RegCo) has issued a query to specialist engineering service provider Acromec, after the counter spiked 73.7% on Aug 11, at around 10.45am on the back on unusually high trading volume.
SGX RegCo issued a statement at 10.44am, asking the company to reveal if it is aware of any information not previously announced that could explain the unusual volume movements in its shares.
