Which shares are the biggest winners and losers on the ASX 300 today?

The S&P/ASX 300 Index (ASX: XKO) is again taking investors on a rollercoaster ride, partly erasing Monday’s gains of 1.25%.

At the closing bell, the ASX 300 finished down 0.46% to 7,246.3 points. This means the index has dropped close to 4% over…