Both countries promised to say more on Monday about what talks over the weekend achieved. Until then, investors and businesses are guessing.

The U.S. and China ended high-stakes trade talks on a positive note on Sunday, with U.S. officials touting a "deal" to reduce the U.S. trade deficit, while Chinese officials said the sides had reached "important consensus" and agreed to launch another new economic dialogue forum.

Top US officials involved in high-level trade negotiations with China emerged from two days of talks touting “substantial progress” and appearing to confirm that a deal between the two countries had been reached,