Global markets are witnessing the benefit of these 2 factors. There are very remote chances of interest rates moving up from zero even till 2023 in US market as indicated by Federal Reserve many times in the past. Also, to be borne on mind is the fact that 2nd or 3rd wave of Covid-19 may impact the economy further which means that interest rates may not go up from here. Infact, US Fed wants inflation to increase which will bring back the growth in the economy. So, when investors are aware that interest rates are going to remain low for next 2 or 3 years, US Fed will inform if interest rates are going to increase.
Investors are not extremely cautious about 2nd wave of Corona as they are aware the Vaccine is in the final stage of development and would be available in next 2 or 3 months: Zee Business