The S&P/ASX 200 fell 0.3 per cent by 23 points to 7235.8.
The materials sector had gains. Most other sectors were down, led by communication services at 1.4 per cent.
Cement manufacturer Adbri dropped 4.9 per cent following Tuesday’s 7.1 per cent fall.
NextDC led the gainers with an increase of 4 per cent.
Tyro Payments chairman David Thodey has announced his resignation from the board, after three and a half years at the helm.
Thodey resigned from the company to take up new opportunities elsewhere after serving four and a half years on the board. Fiona Pak-Poy has been named as his replacement.
“Tyro is a great company that has a strong future ahead as an innovative Australian fintech and the strong results released yesterday clearly show that Tyro is making great strides to becoming the leading specialist payment and banking solutions provider for Australian businesses,” Thodey said.