Why BlueBet, Orocobre, Praemium, & Sandfire shares are racing higher

The S&P/ASX 200 Index (ASX: XJO) is on course to record a small gain on Wednesday. In afternoon trade, the benchmark index is up 0.2% to 7,345.9 points.

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