Organisers said they may hold off on a planned announcement this month to dictate how many domestic spectators can attend the Games in light of the virus situation, after earlier barring overseas fans.
US Treasury yields were lower as investors sought out the safe haven -- yields go in the opposite direction to prices -- providing respite from a recent increase that had led to worries about a hike in interest rates from the record lows that have been a key pillar of support to a year-long equity rally.
The general mood across trading floors is of a blockbuster surge in global growth this year as the rollout of vaccines and easing of lockdowns allow life to return to a semblance of normal.
And Silvia Dall'Angelo at fund manager Federated Hermes added: "Central banks' liquidity will continue to flow abundantly throughout 2021 at least, yet it's unclear whether markets can ever get enough of it."
The move has cost several Wall Street giants huge losses and there had been a fear that investors would have to sell other assets to close out positions to protect themselves from suffering steeper losses.