Take context from the input text and decide on the accurate relationship between 'IRESS' and 'Australian Securities Exchange' from the options provided.
Options: distribution format, platform, stock exchange, industry

BBY had about 1 per cent share of trading across the Australian Securities Exchange and Chi-X prior to being placed in voluntary administration, and accounted for 7 per cent of the local ETO market, according to IRESS data.
stock exchange