US stock futures held steady after Google parent Alphabet reported strong earnings results, and Wall Street saw its third day of gains on renewed hope of trade deals.

The recent optimism on Wall Street dissipated as companies continued to reassess their financial outlooks due to uncertainty over President Donald Trump’s on-again-off-again tariff policies.

U.S. stocks rallied further as better-than-expected profits for U.S. companies piled up, though CEOs say they’re unsure whether it will last because of uncertainty created by President Trump’s trade war.