Why Betr, Centuria Capital, GR Engineering, and Mach7 shares are pushing higher

The S&P/ASX 200 Index (ASX: XJO) is on course to end the week in the red. In afternoon trade, the benchmark index is down 0.3% to 8,500.9 points.

Four ASX shares that are not letting that hold them back are listed below. Here’s why they are rising:

Betr…