Why Mineral Resources, Polynovo, Regal Partners, and Santos shares are falling today

In afternoon trade, the S&P/ASX 200 Index (ASX: XJO) is out of form and dropping into the red. At the time of writing, the benchmark index is down 2% to 7,353.5 points.

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