Why Brainchip, Challenger, Clarity, and Gorilla Gold Mines shares are storming higher

The S&P/ASX 200 Index (ASX: XJO) is on course to end the shortened week with a solid gain. In afternoon trade, the benchmark index is up a decent 0.6% to 7,803.1 points.

Four ASX shares that are rising more than most today are listed below. Here’s why they are…