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* Futures: Dow down 0.09%, S&P 500 up 0.02%, Nasdaq up 0.11%

Aug 11 (Reuters) - U.S. stock index futures were subdued on

Tuesday as a deadlock in U.S.-Iran talks pushed up oil prices

and discouraged investors from taking risks while the inflation

outlook remained uncertain.

President Donald Trump on Monday countered Iran's conditions

for a peace deal by demanding reparations for people killed in

wars, attacks and protests, complicating efforts to reopen the

Strait of Hormuz.

Brent crude futures gained 2% to hit over one-week

highs, building on a more than 5% jump clocked in the previous

session as supply disruption anxiety continued.

Rising energy costs have spurred inflation concerns and

chances of interest rate hikes by central banks around the

world.

Readings of July consumer and producer price inflation due

later this week could be key in ascertaining the U.S. Federal

Reserve's interest rate path, given the central bank's focus on

the inflation mandate and Chair Kevin Warsh's stance on cutting

back forward guidance on rates.

As things stand, money market data shows traders are almost

evenly split between a rate-hike and a pause in September,

according to the CME FedWatch Tool.

At 5:45 a.m. ET, Dow E-minis were down 48 points, or

0.09%, and S&P 500 E-minis were up 1.75 points, or

0.02%. Nasdaq 100 E-minis were up 33 points, or 0.11%.

Wall Street's main indexes closed lower in the previous

session as investors assessed the situation in the Middle East,

though the S&P 500 and the Dow hovered near their

all-time highs.

The Nasdaq, meanwhile, sits about 2.1% from its

all-time highs, but well above its July lows, which saw the

tech-heavy index fall almost 10% from its last record closing

high.

A strong showing of corporate earnings in the current

quarter across several sectors has boosted U.S. stocks to new

peaks, with evidence of high AI-related spending showing signs

of paying off also easing some jitters.

On Tuesday, megacap and growth stocks were mixed. Nvidia ( NVDA )

inched up 0.9% in premarket trading after falling 2.9%

in the last session.

Intel ( INTC ) dipped 1%, extending Monday's losses as the

company announced the pricing of its $20 billion upsized stock

offering.

Riot Platforms ( RIOT ) jumped 21%, following a media report

that the cloud computing firm clinched a $9 billion deal with

Anthropic.

Rocket Lab ( RKLB ) slid 9.3% after the space company

appeared to push back the timeline for the first flight of its

Neutron rocket.

U.S.-listed shares of On dropped 16.2% after the

sportswear brand missed Wall Street estimates for second-quarter

net sales.

Hims & Hers Health ( HIMS ) shed 6.4% after the telehealth

company posted a wider-than-expected second-quarter loss.

The quarterly earnings season was in its last stretch, with

almost 90% of the S&P 500 companies having reported already.

LNG company Venture Global ( VG ) and drug distributor

Cardinal Health ( CAH ) are some of the companies reporting

earnings before markets open on Tuesday.

(Reporting by Avinash P in Bengaluru; Editing by Joyjeet Das)