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* Futures mixed: Dow down 0.36%, S&P 500 flat, Nasdaq up

0.60%

April 24 (Reuters) - Wall Street futures were mixed on

Friday, with markets heading toward the end of a week

overshadowed by the U.S.-Iran stalemate that extinguished hopes

of a swift end to the war.

After widespread speculation around a second round of

negotiations between Washington and Tehran, no talks took place,

and there is still no clarity on when they might.

U.S. President Donald Trump unilaterally extended the

ceasefire with Iran, but maintained the naval blockade of

Iranian ports. Iran also seized ships attempting to pass through

the Strait of Hormuz.

Some investor fatigue may also be setting in. Israel and

Lebanon extended their ceasefire for three weeks at a meeting

brokered by Trump, but investors are holding out for firmer

evidence of lasting progress.

Strong earnings from a series of corporations offered some

respite. Yet with the results taking into account just one month

of the war disruption, some investors have questioned how

reliable they are as a guide to what lies ahead.

At 5:19 a.m. ET, Dow E-minis fell 177 points, or

0.36%, S&P 500 E-minis were flat, and Nasdaq 100 E-minis

advanced 162.25 points, or 0.60%.

Oil prices remain the biggest source of uncertainty, as

Brent crude futures are still around 47% above pre-war

levels because of disruption in the crucial Strait of Hormuz

shipping route.

Still, some see the pullback as a buying opportunity,

arguing that valuations have become more compelling.

The S&P 500 and the Nasdaq Composite have hit

record highs in recent days on the belief that the economic

fundamentals remain solid despite the war.

"Strong market entry points are rarely found during moments

of comfort or clarity. Instead, the most attractive buying

opportunities are typically associated with periods of market

stress," said Jeff Schulze, head of economic and market strategy

at ClearBridge Investments.

Stocks under the spotlight in the premarket session included

Intel ( INTC ), which jumped 23.3% after forecasting

second-quarter revenue above estimates. Rival AMD rose

7.3%.

Online education platform Coursera ( COUR ) fell 10.2% after

its first-quarter results.

DeepSeek, the Chinese artificial intelligence startup whose

low-cost model stunned the world last year, launched a preview

of its highly awaited new model adapted for Huawei chip

technology,

But the U.S. stocks battered by the model last year appeared

to be holding up relatively well. ChatGPT-backer Microsoft ( MSFT )

was up 0.7%, and chip designer Marvell Technology ( MRVL )

rose 3.5%.

(Reporting by Niket Nishant in Bengaluru; Editing by Devika

Syamnath)