Worldwide two-year government bond yields by country 2020-2023
Negative yields assume that investors lack confidence in economic growth, meaning many investments (such as stocks) may lose value. Therefore, it is preferable to take a small loss on government debt that carries almost no risk to the investor, than risk a larger loss on other investments. As both the yen and euro are considered very safe assets, Japanese, German and French bonds were already being held by many investors prior to the pandemic as a hedge against economic downturn. Therefore, with the announcement of fiscal responses to the pandemic by many governments around March 2020, the value of these assets rose as confidence increased (slightly) that the worst case may be avoided. At the same time, yields on bonds with a higher return fell, as investors sought out investments with a higher return that were still considered safe.