5 things to know before the stock market opens Monday

Happy Monday. With the Winter Olympics officially wrapped up, many athletes are leaving Italy with more than just a medal.

Stock futures are lower this morning following a winning week for all three major indexes.

Here are five key things investors need to know to start the trading day:

The Supreme Court on Friday struck down many of President Donald Trump’s tariffs, ruling in a 6-3 vote that the law underpinning these duties “does not authorize the President to impose tariffs.” Hours later, Trump responded by announcing a new 10% global levy, which on Saturday he hiked to 15%.

Here’s the latest:

• The justices’ ruling did not provide a clear answer on whether the U.S. government will have to dole out refunds to importers for the tariffs they’ve already paid. According to one estimate, the U.S. government could owe more than $175 billion in refunds.
• Congressional Democrats and U.S. trading partners cheered the court’s decision, though European leaders later criticized Trump’s move to enact a new 15% global tariff.
• The reversal of Trump’s keystone economic policy also calls into question the many trade deals he’s negotiated with countries around the world. A source told CNBC that India’s negotiators delayed a planned visit to Washington, D.C., for deal talks with the U.S. following the ruling.
• Wall Street expected the court to block Trump’s levies, but stocks still rose on Friday following the decision, helping the major indexes to end the week in the green.
• Stock futures fell this morning, while popular safe-haven play gold jumped to a multi-week high, as investors weigh Trump’s weekend tariff hike.
• Follow live markets updates here.

The National Weather Service this weekend put much of the Northeast under a blizzard warning, as heavy snow continues the fall on the region this morning. Airlines canceled thousands of flights and waved change and cancellation fees for airports across the East Coast.

As CNBC’s Leslie Josephs reports, 15% of scheduled U.S. departures on Monday were canceled, as carriers try to shepherd travelers during the busy winter break period. The blizzard comes a month after January’s Winter Storm Fern created a massive headache for airlines and travelers.

The Transportation Security Administration also said yesterday that PreCheck airport security lanes were operating as expected. The Department of Homeland Security had said hours earlier that PreCheck was paused due to the partial government shutdown.

Trump over the weekend called on Netflix to fire board member Susan Rice, writing in a social media post that the streaming giant should fire Rice “IMMEDIATELY, or pay the consequences.”

Rice, who was former President Joe Biden’s domestic policy chief, said last week that Democrats would hold organizations who “bent the knee” to Trump accountable if the party takes back power in the midterm elections.

Trump’s call for Rice’s removal comes as the Department of Justice reviews Netflix’s proposed acquisition of fellow media company Warner Bros. Discovery. Trump told NBC News earlier this month that the DOJ was handling the deal and that he would not be involved in the review process.

OpenAI is now telling investors that it expects roughly $600 billion in total compute spend by 2030. That’s a significant decrease from the $1.4 trillion figure the AI startup previously touted for infrastructure commitments.

As CNBC’s Kate Rooney and Ashley Capoot report, the move comes amid concerns over whether OpenAI can generate enough revenue to justify investments at that scale. The company is now expecting more than $280 billion in revenue for 2030, sources told CNBC. For comparison, OpenAI raked in slightly over $13 billion last year.

Hasbro and Mattel have fought to lead the toy industry for decades. But as the industry exits a period marked by sales declines, it’s Hasbro that appears to be winning Wall Street’s favor.

Hasbro has seen a boost from its Wizards of the Coast unit, which houses Dungeons & Dragons, Magic: The Gathering and its digital and video game roster. The company saw overall revenue growth of 14% in the 2025 fiscal year, with 45% revenue growth in the Wizards unit. In the same period, Mattel’s net sales slid 1%.

Meanwhile, Mattel’s American Girl brand is celebrating its 40th anniversary. But sales are well off their peak seen around a decade ago, as the toymaker struggles to keep its dolls relevant in the digital era.