* Indexes up: Dow 0.21%, S&P 500 0.33%, Nasdaq 0.64%

* CoreWeave ( CRWV ) jumps after lifting annual capex forecast

* Super Micro Computer ( SMCI ) up after upbeat 2027 revenue forecast

* US consumer prices rise as expected in July

(Updates for markets open)

By Avinash P and Purvi Agarwal

Aug 12 (Reuters) - Wall Street's main indexes rose on

Wednesday, with the Nasdaq outperforming peers as upbeat

earnings from AI infrastructure firms boosted technology stocks,

while largely in-line inflation data reinforced bets the Fed

will hold interest rates steady.

Data showed U.S. consumer prices increased slightly in July,

weakening the argument for the central bank to hike interest

rates next month.

Traders are now pricing in a 55% chance of the U.S. Federal

Reserve holding rates at its September meeting, according to

CME's FedWatch Tool. Before the data was released, they were

split between a hike and no change.

"These backward-looking numbers kind of put the Fed in

exactly the position they want to be. They don't have to do

anything. It's the narrative they want, that we're seeing some

cooling, but there's no collapse in the economy," said Luke

Rahbari, CEO of Equity Armor Investments.

"But... we've had so many starts and stops to the war in

the Middle East and wild swings in oil and gasoline, that this

could totally change day by day."

Economic data, especially inflation figures, have drawn

increased scrutiny as elevated energy prices due to the Middle

East conflict raised rate-hike bets and Fed Chair Kevin Warsh

stayed firm on muted forward guidance.

The situation in the Middle East remained volatile as a

senior Iranian source said there had been no progress in talks

to revive the interim deal agreed in June and define a timeframe

to implement it, while shipping attacks continued.

At 09:38 a.m. ET, the Dow Jones Industrial Average

rose 110.53 points, or 0.21%, to 53,902.38, the S&P 500

gained 25.54 points, or 0.33%, to 7,753.74, and the Nasdaq

Composite gained 168.73 points, or 0.64%, to 26,614.17.

The S&P 500 information technology sector jumped

1.2%, with chipmakers in the lead. Nvidia ( NVDA ) gained 2%,

Micron Technology ( MU ) added 4.4% and Broadcom ( AVGO ) was up

1.4%.

The broader semiconductor index rose about 3% and was

on track for its biggest one-day jump in more than a week.

CoreWeave ( CRWV ) surged 20% after the AI cloud company

lifted its annual capital spending forecast and topped

second-quarter earnings estimates.

Other AI infrastructure providers also rose, including

data-center operators IREN ( IREN ) and Applied Digital ( APLD )

, which gained 7.8% and 5.5%, respectively. Neocloud

company Nebius Group ( NBIS ) jumped 15.5%, helped by its

second-quarter results.

Super Micro Computer ( SMCI ) topped the S&P 500 with a 17%

climb after the AI-server maker forecast fiscal 2027 revenue

above Wall Street expectations.

The earnings underscore robust AI-related demand as Wall

Street giants continue to spend billions to scale up AI.

The gains brought the tech-heavy Nasdaq within 2% of a

record high. The S&P 500 and the Dow have already

scaled peaks last week as upbeat earnings lifted sentiment.

In other stocks, Cava Group ( CAVA ) advanced 17.5% after

the restaurant chain beat Wall Street expectations for

second-quarter sales and core profit.

Lumentum Holdings ( LITE ) added 6.8% after the photonic

product maker forecast first-quarter revenue above analysts'

expectations and beat fourth-quarter estimates.

Advancing issues outnumbered decliners by a 1.54-to-1 ratio

on the NYSE and by a 1.53-to-1 ratio on the Nasdaq.

The S&P 500 posted eight new 52-week highs and one new low,

while the Nasdaq Composite recorded 46 new highs and 39 new

lows.