Market operator ASX has asked the South Australian tuna farmer and research company if it knows of any reason why its shares have moved from 2.8 cents on August 29 to a high of 4.5 cents on Thursday.

Drilling services provider Boart Longyear says it is not aware of any information that could explain yesterday's 75 per cent rise in the price of its shares. The ASX asked the mining services group to ...

Remote control and monitoring systems developer, Intermoco (ASX: INT), was at a loss to explain the sudden market interest in its shares after it received a query from the ASX. INT shares jumped 26% ...