U.S. President Donald Trump said on Wednesday he would be willing to extend a July 8 deadline for completing trade talks with countries before higher U.S. tariffs take effect, but did not believe that would be necessary.

US stocks closed higher as investors wait for news from another day of China-US trade talks in London. Key inflation data are also ahead.

Canadian Prime Minister Mark Carney said he hopes to secure a commercial and security agreement soon with US President Donald Trump, though he tamped down expectations that a deal will be ready in time for the Group of Seven summit in a few days.

• Semtech has a price-to-sales (P/S) ratio of 3.4 against a figure of 3.0 for the S&P 500 • Additionally, the company's price-to-free cash flow (P/FCF) ratio is 52.6 compared to 20.5 for the S&P 500

The broad index is now less than 2% below its all-time high.

High-level trade talks between the U.S. and China wrapped up in London late Tuesday. But the negotiations are far from over.Representatives agreed to keep talking along the lines of the agreement reached in Geneva last month to temporarily lower tariffs.

The treasury secretary's remarks indicate that the Trump administration might be more inclined to shift the self-imposed deadline as it gets closer.

Here are all the tariffs, counter-tariffs, dealmaking, and deal-breaking between the world’s two biggest economies.