The Globe and Mail reports in its Tuesday edition that the S&P 500 and Nasdaq rose on Monday, driven by artificial intelligence-related deals despite unclear U.S. economic data. A Reuters dispatch to The Globe reports that tech firms boosted the Nasdaq, while healthcare companies UnitedHealth Group and Merck, down 2.3 per cent and 4.1 per cent, kept the Dow in the negative. The S&P/TSX Composite Index also gained slightly. Notably, Amazon announced a $38-billion (U.S.) deal with OpenAI, enhancing its AI workloads on Amazon Web Services, which led to a 4-per-cent rise in its stock. Nvidia climbed 2.2 per cent after President Donald Trump said advanced microchips would be allocated to U.S. companies only, amid ongoing trade negotiations between the U.S. and China. Amid the ongoing government shutdown, economic data are limited. The Institute for Supply Management and S&P Global released purchasing managers' indexes indicating U.S. factories are struggling with uncertainty from Mr. Trump's tariff policies, with the Supreme Court scheduled to hear arguments on this issue soon. Following last week's anticipated interest rate cut, the Fed's next decision is uncertain due to the lack of economic indicators.