5 things to know before the stock market opens Friday

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

Stock futures trading was halted this morning after a data center “cooling issue” took down several Chicago Mercantile Exchange services. Individual stocks were still trading before the bell, while the CME said futures indexes and options trading would open fully at 8:30 a.m. Follow live markets updates here.

The stock market has rebounded during the holiday-shortened trading week. But the three major indexes are still on pace to end November’s trading month — which ends with today’s closing bell — in the red. The Dow and S&P 500 are poised to snap six-month winning streaks, while the Nasdaq Composite is on track to see its first negative month in eight.

Today’s trading session ends early at 1 p.m. ET.

Black Friday was once considered the biggest in-person shopping day of the year, drawing huge crowds to stores in search of bargains. But while millions are still expected to partake in the occasion, it’s not what it used to be.

Here’s what to know:

In the past six years, online sales have outpaced brick-and-mortar spending on Black Friday. Data shows in-person foot traffic has been mostly flat over the last few years, as well.No matter where they make their purchases, shoppers are also skeptical that they’re getting the best deals.As CNBC’s Gabrielle Fonrouge reports, the shift has meant a change in strategy for many of the retail industry’s biggest names. Some have started offering their holiday sales earlier in the season, while others are spacing out their promotions.Deloitte reported that the average consumer will shell out $622 between Nov. 27 and Dec. 1, a decrease of 4% from last year. Even as the day of deals loses its allure, AT&T found that Gen Z participates the most, while their older counterparts do their shopping closer to Christmas.

Alphabet has been a notable exception to the recent tech downturn. Shares of the Google parent have surged more than 13% this month as Wall Street sees the company as an AI leader.

Alphabet began the month by announcing its latest tensor processing units, or TPUs, called Ironwood. Last week, the company launched its latest AI model, Gemini 3, which caught positive attention from Silicon Valley heavyweights.

Shares of the stock are now up close to 70% this year, making it the best-performer within megacap tech. But experts told CNBC’s Jennifer Elias that Alphabet’s lead in the competitive AI market is marginal and could be hard to hold onto.

The Alphabet-Nvidia AI race isn’t the only tech rivalry that has heated up in recent days.

Alibaba‘s AI-powered smart glasses went on sale yesterday. With its new wearable tech offering, the Chinese tech company is going up against major players — namely Meta, which unveiled its smart glasses with Ray Ban in September.

Meanwhile, Counterpoint Research found Apple is poised to ship more smartphones than Samsung this year for the first time in 14 years. Apple is also poised to boast a larger market share, driven by strong iPhone 17 sales.

American shoppers are increasingly looking to South Korea for their cosmetics. NielsenIQ found U.S. sales of so-called “K-beauty” products are slated to surge more than 37% this year to above $2 billion.

Retailers ranging from beauty product hubs Ulta and Sephora to big-box chains Walmart and Costco are jumping on the trend. On top of that, Olive Young — aka the “Sephora of Seoul” — is opening its first U.S. store in Los Angeles next year.

Here are some stories worth circling back to over the weekend:

— CNBC’s Chloe Taylor, Gabrielle Fonrouge, Laya Neelakandan, Jessica Dickler, Sarah Min, Sean Conlon, Jennifer Elias, Arjun Kharpal and Luke Fountain contributed to this report. Josephine Rozzelle edited this edition.