Futures rose as much as 0.7% earlier during the debate, well within the range of swings that have prevailed during one of the U.S. stock market’s more volatile stretches. S&P 500 contracts have gained or lost an average of 1% a day since the start of June, data compiled by Bloomberg show.
U.S. equity-index futures erased gains and Asian stocks were mixed as a heated first American presidential debate concluded and traders recalibrated positions on the final day of this quarter. The dollar edged lower.
S&P 500 futures were flat after the end of the debate between President Donald Trump and Democratic hopeful Joe Biden, in which they sparred over topics including health care and the economy.

