"But it confirmed to BusinessDay that its review of the contentious trading practice was confined to just one area of the rapidly growing market - equities - and did not include the highly lucrative and controversial derivatives and commodities markets"
That's because manipulation is an every day occurence in the SPI. I have written many letters to the ASX pointing out total manipulation in the market using these computer programs but the response I recieve is standard that they see no evidence of market manipulation. You only have to trade the SPI to see it happening DAILY.