09:06 AM EST, 02/23/2026 (MT Newswires) -- US equity futures were down ahead of Monday's opening bell as investors digested a Supreme Court decision on President Donald Trump's tariff program.

Dow Jones Industrial Average futures were 0.4% lower, S&P 500 futures were down 0.3%, and Nasdaq futures were 0.5% lower.

The ruling, issued Friday, found that the Trump administration exceeded certain constitutional limits in parts of its trade and tariff actions.

Oil prices were higher, with front-month global benchmark North Sea Brent crude up 0.4% at $71.55 per barrel and US West Texas Intermediate crude 0.5% higher at $66.79 per barrel.

The January Chicago Fed National Activity Index, released at 8:30 am ET, came in at 0.18, compared with negative 0.21 in the prior month and expectations for negative 0.08, according to estimates compiled by Bloomberg.

The December factory orders bulletin, due at 10 am ET, is expected to show a 0.6% decline following a 2.7% rise in the prior month.

In other world markets, Hong Kong's Hang Seng ended 2.5% higher, while the Japanese and Chinese markets were closed for holiday. The UK's FTSE 100 was up 0.2%, and Germany's DAX index was down 0.5% in Europe's early afternoon session.

In equities, ArcellX ( ACLX ) shares were 78% higher after the company agreed to be acquired by Gilead Sciences ( GILD ) for $7.80 billion. Domino's Pizza (DPZ) stock was up 5% after the company reported higher fiscal Q4 earnings and revenue.

On the losing side, Novo Nordisk ( NVO ) shares were 15% lower after the company said its weight-loss treatment CagriSema failed to achieve the primary endpoint in a late-stage trial.