Why MyDeal, Senex, Superloop, and Vulcan shares are surging higher

In afternoon trade, the S&P/ASX 200 Index (ASX: XJO) is on course to start the week with a small gain. At the time of writing, the benchmark index is up 0.2% to 7,375.6 points.

Four ASX shares that are climbing more than most today are listed below….