Why Altium, BlueBet, Healius, & HUB24 shares are tumbling lower

In late trade, the S&P/ASX 200 Index (ASX: XJO) is on course start the week with a gain. At the time of writing, the benchmark index is up 0.3% to 7,512.3 points.

Four ASX shares that have failed to follow the market higher today are listed below. Here’s…