Why Austal, Botanix, DroneShield, and NextDC shares are storming higher today

In afternoon trade, the S&P/ASX 200 Index (ASX: XJO) is on course to record a strong gain. At the time of writing, the benchmark index is up 0.8% to 8,582.3 points.

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

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