Why Clarity, DroneShield, St Barbara, and Treasury Wine shares are charging higher today

In afternoon trade, the S&P/ASX 200 Index (ASX: XJO) is on course to end the shortened week in the red. At the time of writing, the benchmark index is down 0.6% to 8,744.3 points.

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