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The Kospi fell 7.57% to 5,554, its seventh straight decline, as U.S. inflation, AI profit doubts, and credit worries hit together.
Circuit breakers fired on both the Kospi and Kosdaq, erasing 410.9 trillion won of market value in a day as Samsung fell 9.48% and SK Hynix 11.06%. Meanwhile, Gartner warned $3.5 trillion of AI infrastructure spending faces impairment risk by 2030, and CoreWeave fell 15.5%. Separately, pension funds have been net sellers this month, and brokers say the slide lacks buyers to absorb foreign selling.

Sources:
- Seventh Straight Decline: 1,190 Trillion Won of Kospi Market Value Gone — Seoul Economic Daily, Oct 15, 2026
- "$3.5 Trillion of AI Investment at Risk of Impairment by 2030, 80% of Neoclouds to Vanish" — Seoul Economic Daily, Oct 15, 2026
- Fed Beige Book: "High Oil Costs Pass Through the Supply Chain," Warning Sign of Sticky Inflation — Seoul Economic Daily, Oct 15, 2026
- July's Nightmare Returns: "The Next Two Weeks Are the Watershed for a Death Cross" — Seoul Economic Daily, Oct 15, 2026
- Pension Funds Tied by Holding Limits Sold 183.2 Billion Won in the Plunge — Seoul Economic Daily, Oct 15, 2026

About AI PRISM:
AI PRISM is Seoul Economic Daily's WAN-IFRA award-winning newsroom AI series, delivering Korean economic news adapted for global audiences. Episodes are produced with AI assistance and reviewed by a human editor.

Tags:
#KOSPI #CircuitBreaker #Gartner #CoreWeave #PensionFunds #AIPRISM #SeoulEconomicDaily #WANIFRA

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00:02You're listening to AI Prism from Seoul Economic Daily.
00:06The KOSPI plunged 7.57% to 5,554,
00:12and circuit breakers fired on both the KOSPI and the COSDAC.
00:16The KOSPI has now fallen seven straight sessions,
00:19losing 20.7% from its October 2nd close.
00:23Gartner warns $3.5 trillion of AI infrastructure spending
00:27is at risk of impairment by 2030.
00:30And the National Pension Service,
00:32usually the market's fire brigade,
00:34has been a net seller this month.
00:36It's Friday, October 16th.
00:38Here's what today's story could mean for the Korean market.
00:41Hotter U.S. inflation, doubts about AI profits,
00:44and credit worries at debt-funded AI companies
00:47hit at the same time.
00:49Meanwhile, the buybacks in retail buying
00:51that cushioned earlier sell-offs are largely gone.
00:54And brokers are comparing this slide with July's crash,
00:57when the KOSPI fell 32.64% in a month.
01:01Here's what the numbers show.
01:03The KOSPI fell 454.59 points to 5,554.22.
01:10And the COSDAC fell 7.65% to 760.82 comma,
01:17with 410.9 trillion one of market value erased in a day.
01:22Samsung Electronics fell 9.48% to 210,001,
01:28and SK Hynix 11.06% to 1,262,001,
01:34their lowest levels since April 24th,
01:38while foreigners sold 3.63 trillion one,
01:41extending net selling to 18.07 trillion one
01:45over eight sessions.
01:47Gartner estimates $3.5 trillion of AI infrastructure,
01:52spending faces impairment risk by 2030,
01:55and says more than 80% of neocloud providers
01:58could stop operating.
02:00As CoreWeave fell 15.5%,
02:03Anthropics' third-quarter revenue rose 45%
02:07from the prior quarter to $16.8 billion.
02:11Slower than earlier in the year,
02:13and the beige books at higher oil costs
02:16are passing through supply chains.
02:18Brokers note the KOSPI sits 5.5% to 6%
02:22below its 200-day average,
02:25and 91 of 124 pass breaks since 1995
02:29recovered within two weeks.
02:31Pension funds sold in at 183.2 billion one
02:36of KOSPI and KOSDAX stocks since October 6th,
02:40with the National Pension Service's
02:42domestic equity weight having exceeded its limit
02:44at 29.1% in June.
02:47So what does this mean for investors
02:49watching the board today?
02:51Earlier, we said the National Pension Service
02:53has been a net seller this month.
02:56Here's what that actually means for you.
02:58Its domestic equity weight is near its limit,
03:01so analysts estimate it would only gain room
03:03to buy actively if the KOSPI fell
03:05to around $5,100 to $5,200.
03:09Brokers say this sell-off lacks buyers,
03:12since the buybacks have ended
03:13and retail demand is weaker than in July.
03:16So they see no clear rebound trigger.
03:19This is market context, not investment advice.
03:23What to watch
03:24The next two weeks,
03:26which brokers call the watershed for a death cross
03:29between the 50-day and 200-day averages,
03:32the October 27th to 28 FOMC meeting,
03:35after the market priced about a 27% chance of a hike,
03:39and whether financial authorities
03:41launched their contingency plan,
03:43which the financial regulators chief said
03:45they would implement quickly if needed.
03:47That's today's AI prism, stock investors.
03:51This episode was produced with AI assistants
03:54based on Seoul Economic Daily reporting
03:57and reviewed by a human editor.
04:01AI prism is a Juan Ifra award-winning series.
04:04We'll be back tomorrow.
04:06You've been listening to AI prism
04:07from Seoul Economic Daily.
04:11We'll be back tomorrow.
04:13You

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