Soaring one day, plunging the next. Why is the ASX 200 on a rollercoaster?

A look at the recent S&P/ASX 200 Index (ASX: XJO) price charts is enough to give even a seasoned sailor motion sickness.

Indeed, Australia’s benchmark index has been making some historically outsized daily moves these past few days.

Here’s what I mean.

On Friday, the ASX 200 dropped 2.4%…