Reuters reports that Germany's benchmark 10-year bond yield edged back towards a recent five-month low, as a sell-off in world stock markets bolstered demand for safe-haven sovereign bonds.

U.S. Treasuries also rallied, pushing their prices up and yields lower, as Asian shares skidded to their lows for this year. Concerns over tightening regulations upended Chinese equities.

In early trade, Germany's Bund yield touched -0.43% , within striking distance of five-month lows hit last week.

It was last down 2 basis points on the day, with 10-year yields in most higher-rated euro zone states down a similar amount .

Yields across the single currency bloc have fallen sharply this month as a resurgent Delta COVID variant fuels uncertainty over the global economic growth outlook and investors bet that both world growth and inflation may have peaked.