About 15 minutes into trading, the Dow Jones Industrial Average was down 0.2% at 24,148.83.

The broad-based S&P 500 dipped 0.1% to 2,613.68, while the tech-rich Nasdaq Composite Index also slipped 0.1% to 7,030.50.

Morgan Stanley sank 4.7% after reporting fourth-quarter earnings of 80 cents per share, nine cents shy of analyst expectations as it characterized the global environment as “uncertain.”

The Morgan Stanley report capped a series of mixed earnings releases from large banks, with executives generally pleased with US economic conditions on the ground but worried about an ongoing government shutdown and trade wars, among other things.

Trade worries were back in the forefront on Thursday following reports of a US criminal investigation of Chinese technology giant Huawei over allegations of trade secrets theft.

Some market watchers believe a pullback is also inevitable after the market’s nearly unbroken push higher since late December.

Briefing.com analyst Patrick O’Hare said stocks are “overbought on a short-term basis and due for a period of consolidation.”