Hi @Freehold, Commsec seems to be connected to Chi-X, hence that...

Hi @Freehold,
Commsec seems to be connected to Chi-X, hence that could be your best bet. I have not personally used them, so cannot comment beyond that.
However, if you use APIs to automate your system, please have a look at Open Markets IRESS which has both Chi-x and API features. Cost is as twice as Commsec, but better integration is achieved via APIs (http or socket) and also facilitate centre-point (through socket API) and automated trades. Not sure if they include Excel plugins, though. If you used to use only Excel plugins, I can tell you APIs are much easier and faster in handling through codes (maybe CC is biased here, as he is more Access focussed). Anyway, that was just CC’s 2c.
Thank you for all your efforts in keeping STTCOMP up and running.
Cheers, CC