(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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Synopsys ( SNPS ) falls after forecasting FY25 revenue below

estimates

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American Airlines ( AAL ) up after raising Q4 adjusted earnings

forecast

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Indexes: Dow down 0.23%, S&P 500 off 0.03%, Nasdaq up

0.09%

(Updates with mid-session trading)

By Shashwat Chauhan and Purvi Agarwal

Dec 5 (Reuters) - Wall Street's main indexes were mostly

flat on Thursday after recording all-time closing highs in the

previous session, with focus on the monthly employment report

due on Friday as markets mostly brushed off weekly jobless

claims data.

The crucial nonfarm payrolls report, scheduled for

release before markets open, could be key in gauging the Federal

Reserve's interest rate trajectory.

Eric Clark, portfolio manager at the Rational Dynamic

Brands Fund, said the market could get a rate cut in December

but the Fed might be more cautious going forward.

"They have already hinted about being very slow and

methodical about cutting interest rates ... at some point the

market will probably make that realization and put things that

were tied to rate cuts on sale."

U.S. Federal Reserve Chair Jerome Powell appeared to signal

support for a slower pace of interest-rate cuts ahead when he

spoke on Wednesday, while San Francisco Fed President Mary Daly

said there was "no sense of urgency" on reducing borrowing costs

further.

Comments from Richmond Fed President Thomas Barkin are due

later in the day.

On the day, data showed the number of Americans filing new

applications for unemployment benefits increased moderately last

week, suggesting that the labor market continued to cool.

At 11:32 a.m. ET, the Dow Jones Industrial Average

fell 105.25 points, or 0.23%, to 44,908.79, the S&P 500

lost 1.80 points, or 0.03%, to 6,084.84 and the Nasdaq Composite

gained 17.50 points, or 0.09%, to 19,752.62.

Most megacap and growth stocks were mixed. Tesla,

however, outperformed with a 3.5% gain after at least two

brokerages lifted their price target on the electric vehicle

maker's stock.

The S&P 500, the Nasdaq and the Dow

clocked record closing highs on Wednesday, having rallied

greatly this year as investors bought into heavyweight

technology stocks in a bid to cash in on the artificial

intelligence hype.

Another tailwind for stocks recently has been former

U.S. President Donald Trump's win in the Nov. 5 elections.

Analysts expect his policies on tax cuts and looser regulation

could support corporate performance.

Southwest Airlines ( LUV ) gained 3.9% as the carrier raised

its forecast for fourth-quarter revenue per available seat

miles, while American Airlines ( AAL ) added 15% after lifting

its fourth-quarter adjusted earnings forecast.

Synopsys ( SNPS ) fell 10.7% after the chip design software

firm forecast fiscal 2025 revenue below Wall Street

expectations, in part due to a slump in China sales.

Cryptocurrency and blockchain-related stocks lost steam

after surging earlier in the day when bitcoin, the

world's largest cryptocurrency, stormed above the $100,000 mark

for the first time.

MicroStrategy ( MSTR ), the largest corporate holder of

bitcoin, was down 2%, while exchange operator Coinbase

was flat.

Declining issues outnumbered advancers by a 1.18-to-1 ratio

on the NYSE and by a 1.4-to-1 ratio on the Nasdaq.

The S&P 500 posted 34 new 52-week highs and five new

lows, while the Nasdaq Composite recorded 109 new highs and 82

new lows.