KONTAN.CO.ID - NEW YORK, April 12 (Reuters) - U.S. stocks sold off on Friday after major U.S. banks' results failed to impress, capping a week marked by market-moving inflation data, evolving expectations for U.S. Federal Reserve policy, and looming geopolitical tensions.

All three major indexes fell more than 1%, and registered losses on the week.

The S&P 500 index .SPX notched its biggest weekly percentage loss since January, while the Dow Jones Industrial Average's .DJI weekly loss was its steepest since March 2023.

"When we look at what's happened in the macro space, inflation has taken a turn for the worse and that has put more pressure on companies to deliver this earnings season," said Mike Dickson, head of research at Horizon Investments in Charlotte, North Carolina. "Everyone's a bit jittery with intense focus on how good earnings need to be."

Results from a trio of big banks marked the unofficial launch of first-quarter earnings season.

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JPMorgan Chase & Co JPM.N, the biggest U.S. bank by assets, posted a 6% profit increase but its net interest income forecast fell short of expectations. Its shares slid 6.5%.

Wells Fargo & Co's WFC.N stock inched lower after profits fell 7% as net interest income dropped on weak borrowing demand.

Citigroup C.N posted a loss after spending on employee severance and deposit insurance. Its stock dipped 1.7%.

Economic data this week, particularly Wednesday's hotter-than-expected Consumer Price Index report, has suggested that inflation could be stickier than previously thought, prompting investors to reset expectations about the timing and extent of the U.S. Federal Reserve's rate cuts this year.

"It's a very real risk that we won't get any rate cuts this year," Dickson said, adding that while he does not expect a hike, the Fed would probably prefer to keep rates higher for longer.

"There's just no data point that you can actually look at right now that says the Fed should cut rates."

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Boston Fed President Susan Collins said she expects a couple of rate cuts this year, even though it could take inflation some time to return to its targeted level.

Austan Goolsbee, president of the Chicago Fed, said he remains focused on the Personal Consumption Expenditures (PCE) report due on April 26 for a clearer picture of inflation's progress toward the central bank's target.

Geopolitical tensions continue to simmer as Iran threatened to take revenge on Israel for the April 1 airstrike on its embassy in Damascus, adding momentum to the sell-off.

"Geopolitical risks are difficult to nail down but they could keep energy prices elevated, which would not be helpful to for the CPI situation."

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The Dow Jones Industrial Average .DJIfell 475.84 points, or 1.24%, to 37,983.24. The S&P 500 .SPXlost 75.65 points, or 1.46%, at 5,123.41 and the Nasdaq Composite .IXICdropped 267.10 points, or 1.62%, to 16,175.09.

All 11 major sectors in the S&P 500 closed in the red, with materials .SPLRCM suffering the steepest percentage loss.

Advanced Micro Devices AMD.O and Intel INTC.Ofell 4.2% and 5.2%, respectively, following a report that Chinese officials told the country's largest telecom firm earlier this year to phase out foreign chips by 2027.

U.S. Steel X.N slid 2.1% after shareholders voted to approve a proposed merger with Nippon Steel Corporation 5401.T.

Declining issues outnumbered advancers on the NYSE by a 4.19-to-1 ratio; on Nasdaq, a 3.16-to-1 ratio favored decliners.

The S&P 500 posted 12 new 52-week highs and nine new lows; the Nasdaq Composite recorded 35 new highs and 211 new lows.

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Volume on U.S. exchanges was 11.67 billion shares, compared with the 11.41 billion average for the full session over the last 20 trading days.

By Stephen Culp

​(Reporting by Stephen Culp; Additional reporting by Shashwat Chauhan and Shristi Achar A in Bangalore; Editing by Richard Chang)

Editor: Hasbi Maulana