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South Korea’s KOSPI Triggers Circuit Breaker After 8% Open Drop as Samsung, SK Hynix Slide

businessstocksworldsouth-koreaaiai-sector-impact 105 posts · 45 accounts

South Korea’s KOSPI triggered a 20-minute trading halt after dropping 8% to 7,445.1 at Monday’s open, extending Friday’s selloff as Samsung Electronics slid 10% and SK Hynix fell 11%. The Korea Exchange later activated a sidecar to halt KOSPI program selling.

The slump followed a 5.5% fall in the benchmark on Friday, when Samsung lost 6.4% and SK Hynix 9.9%, amid more than $10 billion of foreign outflows over the week and forced fund rebalancing. South Korean stocks have been led lower by chipmaker shares as investors rotate out of artificial-intelligence beneficiaries after Broadcom’s outlook disappointed and a stronger-than-expected US May jobs report of 172,000 reduced expectations for Federal Reserve rate cuts.

From the sources (25 posts)

@cnbc

European stocks set for mixed open after global tech sell-off

@reuters

RT @ReutersOI: 🔊 The latest US jobs report looms, South Korean shares slide amid the broader chip sell-off and private credit nerves grow.…

@zerohedge

RT @themarketear: The first crack? KOSPI just got slammed, SK Hynix is down nearly 10%, and one of the market's most crowded trades is fac…

@reuters

📉 Broadcom just clocked up one of the worst single-day falls in Wall Street history — and South Korea's stock market is feeling the pain. We break it down on today's Reuters Morning Bid podcast

@zerohedge

Futures Drop On Souring Chipmaker Sentiment, Kospi Plunge

@reuters

Investors dumped tech stocks after Broadcom's earnings pumped the brakes on the AI rally, rotating into sectors tied to a resilient economy. Rory McPherson from Magnus says it a 'stark reminder of sky-high expectations'

@business

A record weekly run for US stocks was in danger before the bell on Friday, as a rotation out of AI stocks continued and traders awaited payrolls data

@thestalwart

Stock futures extend their declines

@zerohedge

*NASDAQ 100 FUTURES EXTEND DROP TO 1.5%

@firstsquawk

NASDAQ 100 FUTURES EXTEND DROP TO 1.5 PCT

@financialjuice

🔴 MOO IMBALANCE S&P 500: 134.6 MLN NASDAQ 100: 69.1 MLN DOW 30: 40.8 MLN MAG 7: 11.5 MLN $MACRO

@firstsquawk

S&P 500 DOWN 52.48 POINTS, OR 0.69 PERCENT, AT 7,531.83 AFTER MARKET OPEN NASDAQ DOWN 321.79 POINTS, OR 1.20 PERCENT, AT 26,509.17 AFTER MARKET OPEN DOW JONES UP 24.41 POINTS, OR 0.05 PERCENT, AT 51,586.34 AFTER MARKET OPEN

@deitaone

*S&P 500 OPENS DOWN 0.7%, NASDAQ DECLINES 1.2%

@hedgeye

Stocks open red:

@maxcrypto

🚨BRUTAL DUMP: $500,000,000,000 erased from the US stock market in just 2 MINUTES.

@stockmktnewz

The 🇺🇸 stock market is starting out trading today Red 🔴🔴🔴🔴

@bulltheoryio

🚨 $650 BILLION has been wiped out from the U.S. stock market today as the S&P 500 dumps -0.95%.

@firstsquawk

NASDAQ 100 DROPS FURTHER BY 2%.

@stockmktnewz

The NASDAQ 100 $QQQ is now down by more than 2% so far today 🔴🔴

@maxcrypto

THIS IS INSANE. $950,000,000,000 has now been wiped out from the US stock market in just 35 MINUTES.

@firstsquawk

NASDAQ 100 EXTENDS DROP TO 2.5 PCT

@tradfi

*NASDAQ 100 EXTENDS DECLINE TO 3%, S&P 500 FALLS 1.7%

@firstsquawk

NASDAQ 100 DROPS FURTHER BY 3%, S&P 500 DECREASES BY 1.7%

@zerohedge

*NASDAQ 100 EXTENDS DECLINE TO 3%, S&P 500 FALLS 1.7%

@negligible_cap

*NASDAQ 100 EXTENDS DECLINE TO 3%, S&P 500 FALLS 1.7%

Preview built on a synthetic news corpus (16 weeks, Apr–Jul 2026). Impact calls are model reads, not price data.

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