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Mexico probing if US violated sovereignty in 2024 drug lord capture
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Nigeria's Dangote confirms Lamu, Kenya for east Africa mega-refinery
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Zverev reaches first Wimbledon quarter-final
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Study points to likely route for Hannibal's legendary Alpine crossing
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Nordic joy as Traeen takes yellow, Pedersen wins Tour de France 4th stage
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Australia's Mooney back at No 1 in batting rankings after World Cup heroics
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Electric Our Lady land: guitar made from burned Notre Dame wood
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Traeen takes yellow, Pedersen wins Tour de France 4th stage
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Tanker attacks send oil higher, stocks hit by AI jitters
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UK hard-right leader Farage resigns as MP to force snap vote in finances row
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IOC shuffle 2030 Winter Games events and promise gender parity
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Harry Kane calls for calm after England's World Cup epic against Mexico
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Macron says Syria must not be destabilised after bombs wound 18
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Beleaguered Prince Harry loses lawsuit against UK tabloid
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France's Le Pen to announce if running for president with ankle tag
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Sinner eyes Djokovic showdown after moving into Wimbledon semis
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France get ready to face 'lost treasure' Bouaddi in Morocco World Cup clash
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Sinner conquers heat, sets up potential Djokovic clash at Wimbledon
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Trump berates NATO, praises Erdogan as summit starts
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'Veteran' Gauff completes Slam semi-final set with Wimbledon fightback
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Blazy's Chanel fairy tale continues with whimsical couture show
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UK hard-right leader resigns as MP to force snap vote in finances row
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Stocks hit by AI concerns as oil rises on tanker attack
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US trade gap in May widens to biggest in over a year
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Prince Harry, Elton John lose case against UK tabloid
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France's Le Pen cleared to run for president but with ankle tag
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Serena wants to play again before US Open, says coach
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This year's El Nino likely to become record-breaker: top expert
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Sign of the times: Harry Styles sets record with 12-night Wembley run
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Kenya, Tanzania shut down protest anniversaries
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France's Le Pen arrives in court for key ruling in race for president
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Women pushed back to Afghanistan pin hopes on rare private sector jobs
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Stocks mixed tracking AI concerns, as oil rises on tanker attack
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Bomb attacks wound 18 in Damascus as Macron visits
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Paris FC confirm Rosenior taking over as coach
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Cuba slowly gets power back after third nationwide blackout in six months
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Thousands without power in US Pacific islands after super typhoon
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NATO summit showcases arms deals in push to win over Trump
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Prince Harry to discover outcome of UK tabloids case
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Seoul dives on tough day for Asia as Samsung fails to ease tech woes
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Messi v Salah in World Cup last-16 showdown
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Democrats push key US Senate candidate to quit over sex assault claim
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Death toll from China storms rises to 15, hundreds injured
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As South Korean Buddhism woos Gen Z, how hip is too hip?
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Belgium boosted by Balogun furore: Tielemans
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'Disappointed' Pochettino says Balogun row no excuse for US World Cup exit
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Samsung expects 1,800% operating profit leap on AI boom
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Seoul dives on mixed day in Asia as Samsung fails to ease tech woes
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Belgium thrash USA to end World Cup dream and set up Spain showdown
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Belgium dump US out of World Cup after Balogun row
Stocks drop as tech rally fades
Stock markets fell Tuesday as investors weighed the recent tech rally on Wall Street against growing fears of an AI bubble and concerns over the US interest-rate outlook.
A flood of multi-billion-dollar investment into artificial intelligence has been a key driver of the surge in mostly technology equities across the globe this year, sending valuations to record highs.
But there is increasing talk that tech-led gains may have gone too far and a painful correction could be on the way.
"Wall Street CEOs have also put investors on notice for a correction in the next 1-2 years," said Kathleen Brooks, research director at trading group XTB.
"It seems like the investment community has taken heed of this message," she added.
Briefing.com analyst Patrick O'Hare pointed to the more than nine percent drop in Palantir shares despite the US software firm beating expectations for its third quarter earnings and future guidance.
"Palantir, trading at close to 100 times sales, has been a poster child for valuation concerns," he said.
"Accordingly, the weak price action after yet another terrific earnings report has taken some wind out of the market's sails, acting as a sign to some that this stock and the market-cap-weighted market have gotten ahead of themselves." he said.
In the latest deals, Palantir launched a joint venture with the Dubai government's investment arm on Tuesday.
US chip-maker Nvidia and Deutsche Telekom, meanwhile, said a one-billion-euro ($1.1 billion) industrial artificial intelligence hub will soon be launched in Germany, Europe's latest bid to catch up in the global AI race.
This came a day after ChatGPT-maker OpenAI signed a $38 billion deal with Amazon's AWS cloud computing arm.
Wall Street opened lower on Tuesday, with the tech-heavy Nasdaq Composite dropping 1.5 percent.
All the "Magnificent 7" stocks -- Alphabet, Amazon, Apple, Meta, Microsoft, Nvidia and Tesla -- slid as trading started.
In Europe, the Paris and Frankfurt stock markets were down around one percent in afternoon trading Tuesday, while London slipped 0.4 percent.
The British pound retreated against the dollar after finance minister Rachel Reeves hinted at tax rises in a pre-budget speech.
That tracked a weak day in Asia, with Tokyo, Hong Kong and Shanghai stocks falling.
Cautious remarks from US Federal Reserve officials did little to provide support for further buying after the central bank's chief, Jerome Powell, indicated last week that a third rate cut this year was not definite.
Data on Monday indicated some further weakness in the US economy, with a key gauge of activity in the manufacturing sector contracting more than expected and for an eighth straight month in October as demand and output weakened.
In company news, shares in British energy giant BP were only up 0.3 percent after a drop in oil prices on Tuesday overshadowed its strong earnings report.
Crude prices shed around one percent as the market anticipated oversupply.
- Key figures at around 1430 GMT -
New York - Dow: DOWN 0.7 percent at 46,996.72 points
New York - S&P 500: DOWN 1.2 percent at 6,772.87
New York - Nasdaq Composite: DOWN 1.6 percent at 23,458.21
London - FTSE 100: DOWN 0.4 percent at 9,662.93
Paris - CAC 40: DOWN 0.9 percent at 8,039.44
Frankfurt - DAX: DOWN 1.2 percent at 23,852.57
Tokyo - Nikkei 225: DOWN 1.7 percent at 51,497.20 (close)
Hong Kong - Hang Seng Index: DOWN 0.8 percent at 25,952.40 (close)
Shanghai - Composite: DOWN 0.4 percent at 3,960.19 (close)
Euro/dollar: DOWN at $1.1480 from $1.1518 on Monday
Pound/dollar: DOWN at $1.3044 from $1.3138
Dollar/yen: DOWN at 153.47 yen from 154.20 yen
Euro/pound: UP at 88.01 pence from 87.67 pence
West Texas Intermediate: DOWN 1.1 percent at $60.39 per barrel
Brent North Sea Crude: DOWN 1.0 percent at $64.27 per barrel
burs-rl/lth
C.Kovalenko--BTB