what's going on.1,190,000 oxxcb traded., page-4

Tied up with Chi-X trading platform which commenced November last year. Previously, when all transactions were conducted on the ASX, there was transparency for all participants as to the Bid/Ask price. Now, with multiple trading platforms, the ASX has set up a new NBBO (National Best Bid & Offer) platform called ASX-PureMatch and when bid/offers are submitted to either the ASX or Chi-X exchange, they go into the PureMatch trading system and are executed as if they were all part of one, big trading system.

From a reporting code point of view, however, if one side of the trade is on the traditional ASX system and the other side is on Chi-X, it is reported as NXXT.

Thats why the prices were also different than comsec might have shown for the day