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Melania Trump says secured ceasefire in Ukrainian city of Oleshky
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Oil hits $115 with stocks mixed on earnings, AI
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Carrick 'confident' he can turn around Man Utd slump
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Casualties feared as multi-storey building collapses in Nairobi
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PSG v Lyon French Ligue 1 game postponed due to Paris protests
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Man Utd defeat to Como 'unacceptable', says Carrick
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Meghan Markle 'distressed' over claims father had child abuse images
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Hurzeler 'focused' on Brighton job despite Man Utd links
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Gunman kills one, wounds four in town outside Paris
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Hammer blow for Kenya as world marathon champ Jepchirchir suspended for doping
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France to deploy 70,000 police ahead of new protests
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Latin America's right-wing swing looms large over nature summit
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Mekies hails Verstappen as Red Bull's driving force amid revival
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European, Mideast foreign ministers hold talks in Istanbul
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Tanker with Russian diesel heads to New York under Trump deal
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World marathon champion Peres Jepchirchir suspended for doping: AIU
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New centre puts focus on Portuguese dictator Salazar's legacy
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Romania blames Russia for new deadly attack on ship
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Oil nears $115 with stocks mixed on earnings, AI
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Waze rejects Malaysia's data security claims after civil servant ban
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Asian football endorses Infantino re-election in apparent U-turn
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'Call of Duty' seeks to win back fans with warfare spectacle
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Ukraine says two soldiers died after arrested girl sent Russian poison
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Volvo Cars shares plunge on losses, job cuts
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New Greece law bans social media for under-15s
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France braces for new protests as Macron seeks to restore order
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Netanyahu orders West Bank closure as attack wounds Israelis before election
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Kering shares tumble as Gucci fails to reassure investors
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Asian stocks mixed ahead of weekend as tech recovers early losses
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West Bank attack wounds 5 as Israel PM cancels events
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How five Boeing 777s linked Madagascar's power elite to Iran
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Ahead of APEC summit, Trump comes knocking on Kim's door
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South Korea proposes holding border talks with North
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Emergency nurseries rescue DR Congo's Ebola orphans
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Ukraine's young figure skaters twizzle on despite Russian threat
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Bezzecchi tops Australian MotoGP practice as wallaby hops onto track
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Asian football endorses Infantino re-election as FIFA president
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Under-threat Ospreys bet on new ground and Australian 'stardust'
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Complete Kane hopes for 'special night' as Ballon d'Or rumours swirl
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India stirs up its gastronomy with French cooking schools
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Rooney calls United squad 'selfish babies' after Fernandes criticism
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Williams, Santos lead Bears over Patriots
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Teddy Wilson, son of World Cup-winner David, gets Wallabies call-up
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China's first AI film hits cinemas but ticket sales lag
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New Zealand military chief resigns over 'inappropriate relationship'
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Barcelona aiming to put Real Madrid out of sight in Clasico
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Man Utd's Carrick on borrowed time, free-scoring Brighton face Liverpool
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Taiwan shuts down as Typhoon Champi approaches
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Asian stocks head into weekend on a low as tech extends losses
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370 books in 20 months: S.African author defends her use of AI
Asian markets tumble as tech bubble fears grow
Tech companies led a sharp sell-off across Asia on Wednesday as investors grow increasingly worried about an AI bubble following a rally this year that has seen valuations hit record highs.
Global markets have soared this year as an eye-watering flood of cash piled into companies linked to artificial intelligence, including US titans Nvidia, Amazon and Apple as well as Asian firms Samsung and Alibaba.
But despite strong earnings releases in recent quarters, traders have started questioning the wisdom of chasing ever-higher prices, with cash mostly funnelled into a handful of big-name companies.
The gains have also been helped by an easing of US trade tensions and expectations that the Federal Reserve will continue to cut interest rates into the new year.
But last week's warning from the US central bank that another reduction in December was not a foregone conclusion jolted sentiment.
After an uncertain start to the week Monday, Wall Street tumbled on Tuesday, with the tech-rich Nasdaq down more than two percent and the S&P 500 off more than one percent.
US software firm Palantir slumped 8.0 percent despite reporting a 63 percent surge in revenues and profits.
Asia took up the baton in the morning, with Seoul and Tokyo the hardest hit, having just hit record highs.
Seoul tanked six percent at one point, as chip giants Samsung and SK hynix each lost around seven percent.
"I view today's decline as a correction to cool off an overheated market -- a phase of adjustment," Chung Hae-chang, analyst at Daishin Securities, told AFP.
"The recent rally was extremely steep, so this is the counterbalance."
He also warned Seoul's Kospi index could decline five percent further and that "SK hynix and Samsung may also see corrections proportional to their earlier gains".
Tokyo dived more than four percent as tech investment giant SoftBank shed 14 percent and Sony more than two percent.
Nintendo, however, briefly jumped more than 10 percent a day after the gaming firm hiked forecasts for its Switch 2 console and annual profits.
- 'Sea of red' -
Taipei was off more than two percent as market heavyweight and chip-maker TSMC gave up three percent.
There were also big losses in Hong Kong, Shanghai, Singapore, Sydney, Wellington, Manila and Jakarta.
"It's a sea of red across broad markets, and one that offers a gloomy and damp portrayal of risk," said Chris Weston at Pepperstone.
"In the lead-up to the session, traders had been rotating out of the lower-quality end of the market and into the higher-quality plays, and this dynamic resulted in poor breadth within the US equity indices."
He said that dynamic had changed and traders were "cutting back on their winners and locking in performance, with the Magnificent Seven (leading tech stocks) basket and AI plays driving equity risk lower."
And Mike Gitlin, president and chief executive officer of Capital Group, said that while earnings are strong "what's challenging are valuations", according to Bloomberg.
His comments came at a financial summit organized by the Hong Kong Monetary Authority on Tuesday, where other business leaders including Morgan Stanley boss Ted Pick and Goldman Sachs' David Solomon warned of a big correction.
Meanwhile, Saxo Markets' Charu Chanana said two questions were echoing across portfolios.
"Those who've ridden the rally from early 2023 are sitting on substantial gains and wondering if it's time to lock in profits (and) those still on the sidelines are feeling the pull of (fear of missing out, questioning if they've missed the best entry point.
"Both are fair concerns. The AI boom has pushed the 'Magnificent' names to new highs, but under the surface, their stories have begun to diverge between companies monetising AI today and those still investing for tomorrow."
The uncertainty across markets was also felt in the crypto universe, where bitcoin briefly fell below $100,000 for the first time since June, a month after topping out at a record high above $126,000.
- Key figures at around 0230 GMT -
Tokyo - Nikkei 225: DOWN 4.7 percent at 49,104.05 (break)
Hong Kong - Hang Seng Index: DOWN 1.1 percent at 25,676.11
Shanghai - Composite: DOWN 0.4 percent at 3,943.45
Euro/dollar: DOWN at $1.1487 from $1.1479 on Tuesday
Pound/dollar: DOWN at $1.3017 from $1.3019
Dollar/yen: DOWN at 153.17 yen from 153.66 yen
Euro/pound: UP at 88.25 pence from 88.17 pence
West Texas Intermediate: DOWN 0.7 percent at $60.13 per barrel
Brent North Sea Crude: DOWN 0.6 percent at $64.05 per barrel
New York - Dow: DOWN 0.5 percent at 47,085.24 (close)
London - FTSE 100: UP 0.1 percent at 9,714.96 (close)
G.P.Martin--AT