EN Home › Market Briefing · published Oct 16, 2026 morning (KST) · prices as of 2026-10-15 close한국어

US 10Y 5.10%, KOSPI 200 plunges 8.13%: Oct 16 Korea market briefing

Yesterday was a day of heavy turbulence in Asian stock markets. The KOSPI 200 fell 8.13% and the Nikkei 225 dropped 4.90%, while the US 10-year Treasury yield closed 9.0bp lower at 5.10%. Today's key variables are the path of interest rates, after a hotter-than-expected US September consumer price index raised the possibility of further Fed rate hikes, and developments in the Middle East.

Yesterday's closes

Indicator	Close	Change	%
USD/KRW10-14	1,342.3	+0.8	+0.06%
Dollar Index10-15	102.13	-0.74	-0.72%
USD/JPY10-15	158.05	-0.79	-0.50%
US 10Y Yield10-15	5.100%	-9.0bp	-
Korea 3Y Yield10-15	3.867%	-1.6bp	-
KOSPI 20010-15	860.70	-76.12	-8.13%
Nasdaq 10010-15	29,935.60	-15.22	-0.05%
Nikkei 22510-15	64,425.95	-3,318.34	-4.90%
Hang Seng10-15	24,062.72	-251.45	-1.03%
DAX10-15	25,382.62	+84.01	+0.33%
WTI Crude10-14	95.09	+0.95	+1.01%
Gold10-14	4,107.90	-69.40	-1.66%
Bitcoin10-16	82,411	+769	+0.94%

The date next to each indicator is the trading day of that close. Bitcoin is the spot price at publication (7am KST). Yield changes are in bp (0.01 pp).

FX & Rates

USD/KRW closed at 1,342.3 won per dollar on October 14, up 0.8 won (0.06%) from the previous day, so it was barely changed. That is 6.58% below its 100-day average of 1,436.8. The Dollar Index fell 0.72% to 102.13, and USD/JPY also slipped 0.50% to 158.05 yen per dollar. The US 10-year Treasury yield closed at 5.10%, down 9.0bp from 5.19% the previous day, but it remains above its 100-day average of 4.73%. The Korea 3-year yield fell 1.6bp to 3.87%.

Equities

The KOSPI 200 closed at 860.70, down 76.12 points (8.13%) from the previous day, leaving it 24.86% below its 100-day average of 1,145.49. The Nikkei 225 also fell 4.90% to 64,425.95, and the Hang Seng dropped 1.03% to 24,062.72, so Asian markets were weak across the board. By contrast, the Nasdaq 100 was almost flat, down 0.05% at 29,935.60, and Germany's DAX rose 0.33% to 25,382.62. Asian markets moved very differently from those in the US and Europe.

Commodities & Crypto

WTI crude closed at 95.09 dollars on October 14, up 1.01%, which is 11.24% above its 100-day average of 85.48 dollars. Gold fell 1.66% on the same day to 4,107.90 dollars, below its 100-day average of 4,291.18 dollars. Bitcoin stood at 82,411 dollars as of 7:00 a.m., up 0.94% from the previous day. Because the oil and gold prices are October 14 closes, they may not yet reflect yesterday's news from the Middle East.

News and Markets

The Houthi rebels claimed attacks on Saudi oil facilities, and Iran said a cargo ship struck a mine and sank in the Strait of Hormuz. Both incidents are tied to concerns about oil shipping routes and are cited as upward pressure on the WTI crude price. The US September consumer price index came in higher than expected because of a sharp rise in gasoline prices, prompting assessments that the chance of further Fed rate hikes has grown. However, the US 10-year Treasury yield actually fell that same day, so the inflation release alone does not explain the move in yields. The direct cause of the sharp falls in the KOSPI 200 and Nikkei 225 cannot be confirmed from the news provided.

What to Watch Today

First, it is worth checking how the stock market moves after the KOSPI 200 fell more than 8% in a single day, along with foreign investor flows. Other variables to watch are what Fed officials say about the hotter-than-expected US consumer prices and how the US 10-year Treasury yield moves in the 5% range. The Houthis' warnings of further attacks and the situation in the Strait of Hormuz are indicators to check that bear directly on the WTI crude price. In Korea, it is worth watching how President Trump's pressure to follow through on Alaska LNG investment affects USD/KRW and trade issues with the United States.

Yesterday's key world news

Houthis and Saudi Arabia trade strikes on oil facilities; cargo ship sinks in Hormuz· Geopolitics
The Houthi rebels claimed attacks on Saudi Aramco headquarters and Riyadh airport in retaliation for Saudi-led coalition airstrikes on Yemeni fuel facilities. Combined with a mine incident in the Strait of Hormuz, the attacks are adding upward pressure on global oil prices.
US September CPI up 3.7% as gasoline surge reignites inflation· Economy & Markets
US consumer prices rose 3.7% year on year in September, above expectations, with a 9% jump in gasoline prices accounting for half of the increase. The data raise the chance of further Fed rate hikes and are a negative for the midterm elections.
Starshield restrictions disrupt Ukrainian operations as European gas prices surge· Geopolitics
Restrictions on SpaceX's Starshield disrupted Ukrainian forces' communications and strikes, which some analysts see as US pressure to halt attacks on Russian refineries. European gas futures rose to their highest since December 2022, deepening worries about winter supply.
OpenAI bugging case and MI5 warning push AI onto the security agenda· Tech & Industry
The FBI charged an employee who planted a listening device in an OpenAI meeting room, and the head of MI5 named AI-driven disinformation and bioweapon development as major threats. Protecting AI technology and AI safety are emerging as factors for national security and corporate valuations.
Russia detains Japanese journalist on espionage charges as Kuril tensions rise· Geopolitics
Russia's FSB arrested a Japanese journalist for allegedly collecting information on the Kurils; a conviction could bring 10 to 20 years in prison, and Japan has formally protested. With a Chinese delegation also visiting the Kurils, territorial tensions in Northeast Asia are growing.

Full country-by-country summaries for Oct 15, 2026 (Korean) →

US 10-year Treasury yieldKOSPI 200USD/KRW exchange rateNikkei 225WTI crude oil priceUS CPIgold priceBitcoin price

This briefing is an automated summary of public market data and news-broadcast summaries from several countries, for information only — not investment advice. Figures follow the table's source data; markets may have moved since publication.