Why Appen, Cettire, DroneShield, and Imugene shares are racing higher

In afternoon trade, the S&P/ASX 200 Index (ASX: XJO) is on course to start the week with a decline. At the time of writing, the benchmark index is down 0.2% to 8,074.4 points.

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