(For a Reuters live blog on U.S., UK and European stock

markets, click/ or type LIVE/ in a news window.)

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Boeing ( BA ) down on warning of bigger-than-expected Q4 loss

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Verizon rises on higher-than-expected Q4 subscriber

additions

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American Express ( AXP ) falls after Q4 results

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S&P January PMI data awaited

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Futures off: Dow 0.23%, S&P 500 0.17%, Nasdaq 0.17%

(Updates before markets open)

By Johann M Cherian and Sukriti Gupta

Jan 24 (Reuters) -

Wall Street's main stock indexes were set to open lower on

Friday, with investors staying cautious ahead of economic data,

while planemaker Boeing ( BA ) dropped after issuing a quarterly profit

warning.

At 8:42 a.m. ET, Dow E-minis were down 105

points, or 0.23%, S&P 500 E-minis were down 10.75

points, or 0.17%, and Nasdaq 100 E-minis were down 37

points, or 0.17%.

In premarket trading, Boeing ( BA ) lost 1.6% after warning

that it expects a fourth-quarter loss of about $4 billion. The

company is expected to report quarterly results on Tuesday.

NextEra Energy dropped 1.6% after reporting a

decline in its fourth-quarter profit, hurt by weakness in its

renewables segment.

Later in the day, markets will assess a preliminary

private survey on manufacturing and services activity for

January and the University of Michigan's final estimate on

consumer sentiment.

Tariffs are high on investors' minds after President Donald

Trump referred to the policies multiple times at separate events

this week but did little to lay out entire details of the

surcharges he plans to impose on trade partners of the United

States.

The president has said tariffs on Mexico, Canada, China and

the European Union could be announced on Feb. 1, but analysts

say major plans could be announced on April 1 - the date by when

federal agencies are expected to complete reviews of a range of

trade issues.

Investors have negatively reacted to reports about potential

tariffs, on worries that they could spark a global trade war,

add to inflation pressures and slow the pace of interest rate

cuts by the Federal Reserve. The central bank is expected to

leave interest rates unchanged next week at its first policy

meeting of the year.

However, Ross Mayfield, investment strategist at Baird, said

"our view has been from the beginning that the concern about

Trump inflation was overstated."

"There could be a slight upward pull on inflation from

certain tariffs and maybe from immigration policies leading to

higher wages, but there's also a downward pull from deregulation

and more pro energy policies."

Investors were also taking a pause after the benchmark S&P

500 closed Thursday's session at a record high for the

second time in over a month after Trump called for taxes, oil

prices and interest rates to be lowered at the World Economic

Forum in Davos, Switzerland.

On a weekly basis, Wall Street's main indexes are set for

their second straight week of advances, with the blue-chip Dow

on track for its biggest weekly jump since October 2022,

aided by Trump's artificial intelligence investment plans, signs

of cooling inflation and robust earnings from big banks in the

previous week.

Among others, Texas Instruments ( TXN ) dropped 4.4% after

forecasting first-quarter profit below analysts' estimates.

American Express ( AXP ) reported a 12% jump in

fourth-quarter profit. Its shares, however, fell 0.6%.

Verizon Communications ( VZ ) was up 0.9% on

higher-than-expected

fourth-quarter subscriber additions.

The following week will see quarterly reports from megacaps

such as Microsoft ( MSFT ), Meta, Apple ( AAPL ) and

Tesla.

U.S.-listed shares of Chinese companies such as JD.Com

rose 3.1%, Xpeng added 2.7% and Alibaba

climbed 1.1% after Trump suggested in an interview that tariffs

against China could be avoided.