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

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

*

Chipotle falls after tepid sales forecast

*

Uber ( UBER ) declines after guiding Q1 below estimates

*

Futures down: Dow 0.15%, S&P 500 0.32%, Nasdaq 0.63%

(Updates before markets open)

By Shashwat Chauhan and Sukriti Gupta

Feb 5 (Reuters) - Wall Street's main indexes were set

for a lower open on Wednesday, with the tech-heavy Nasdaq on

track to lead losses following disappointing forecasts from

Alphabet and AMD in a busy day for corporate earnings.

Google-parent Alphabet dropped 7.8% in premarket

trading after posting downbeat cloud revenue growth and

earmarking a higher-than-expected $75 billion for its AI

buildout this year, fanning concerns about its hefty investments

into the technology.

"While some investors may have hoped that Silicon Valley

would exercise caution in the wake of China's AI innovations,

the opposite is occurring," Jochen Stanzl, chief market analyst

at CMC Markets, said in a mailed statement.

Advanced Micro Devices ( AMD ) lost 9.7% after CEO Lisa Su

said the company's current-quarter data center sales - a proxy

for its AI revenue - would fall about 7% from the previous

quarter.

"The guidance from many of the big major corporations

has been disappointing and it threatens the expectations of

earnings growth for this year," said Robert Pavlik, senior

portfolio manager at Dakota Wealth Management.

Apple ( AAPL ) shed 2.1% after Bloomberg News reported that

China's antitrust regulator was preparing for a possible

investigation of the iPhone maker.

At 08:32 a.m. ET, Dow E-minis were down 69

points, or 0.15%, S&P 500 E-minis were down 19.5 points,

or 0.32%, and Nasdaq 100 E-minis were down 137 points,

or 0.63%.

Data on Wednesday showed private payrolls rose by 183,000

jobs last month, compared with an estimated 150,000 increase, as

per economists polled by Reuters.

A survey on U.S. services activity for the month is due

shortly after markets open, while the all-important January

nonfarm payrolls report is expected to be released on Friday.

Markets also looked for developments on the tariffs front.

U.S. President Donald Trump said on Tuesday he was in no

hurry to speak to Chinese President Xi Jinping to try to defuse

a new trade war between the countries.

Morgan Stanley joined Barclays and Macquarie in forecasting

a single 25-basis-point interest rate cut by the U.S. Federal

Reserve this year, citing uncertainty from Trump's tariff

policy.

Richmond Fed president Thomas Barkin said the Fed was still

leaning towards more rate cuts this year, but flagged

uncertainty around the impact of new tariffs, immigration,

regulatory and other Trump administration initiatives.

Among top movers, FMC Corp ( FMC ) plunged 25% after the

agrichemicals producer forecast first-quarter revenue below

estimates.

Chipotle Mexican Grill ( CMG ) slid 5.9% as the burrito

maker forecast tepid annual comparable sales growth and said the

company would take a roughly 60-basis-point impact on its raw

material costs this year if Trump's proposed tariffs against

Mexico go into full effect.

U.S.-listed shares of Chinese e-commerce firm PDD Holdings ( PDD )

dropped 3.2% after a report that the U.S. was

considering whether to add PDD's Temu to Homeland Security's

"forced labor" list.

Uber Technologies ( UBER ) dropped 5.5% after the

ride-hailing company forecast current-quarter bookings below

estimates and reported a lower-than-expected quarterly profit.