Korea’s KOSPI fell 4.58% as Samsung Electronics and SK hynix tracked the Nasdaq’s AI-spending scare, triggering a sell-side sidecar. KOSDAQ closed higher on a biotech rotation, and retail investors bought the dip against heavy foreign selling.
The KOSPI fell 5.12% to 6,257.45 as traders booked profits from Friday’s record 17.91% surge, with Samsung Electronics and SK hynix both down almost 9%. The KOSDAQ climbed 2.44% and triggered a buy sidecar as money rotated into bio and robotics names.
DRAM spot prices historically turn one to two quarters before Samsung Electronics and SK Hynix earnings inflect — and those two stocks drive the KOSPI. Here is where to find the DXI index, DRAMeXchange spot quotes, and hyperscaler capex guidance, and how to read a cycle turn step by step.
The KOSPI surged 17.91% to 6,595.45 — its biggest one-day gain on record — as strong US tech earnings eased AI profitability fears and foreign investors piled back in after a brutal two-week selloff capped by back-to-back circuit breakers.
The KOSPI fell 1.23% to 5,593.56 for a third straight loss as a morning push toward 6,000 collapsed under semiconductor profit-taking. SK hynix sank 5.6% while batteries and banks rallied, and foreign investors returned as net buyers on the main board.
Korea’s KOSPI fell 5.98% and the KOSDAQ 6.12%, with market-wide circuit breakers halting both boards for a second straight day. SK hynix’s guidance letdown and forced selling from single-stock leveraged products drove the slide.
The KOSPI fell 10.84% to 6,023.66 and briefly broke below 6,000 as China semiconductor fears hammered Samsung Electronics and SK hynix. Both exchanges halted trading with sidecars and circuit breakers while foreign investors dumped roughly $3.4 billion of Korean stocks.
Seoul stocks rebounded Monday: KOSPI +0.97% to 6,755, KOSDAQ +2.22%. Falling oil and AI-summit optimism lifted sentiment, with NAVER up 8.4% on an Nvidia investment, even as foreign investors dumped roughly $2.0B of KOSPI shares.
One company accounts for roughly a fifth of Korea’s benchmark index. Here is how KOSPI’s cap-weighted methodology turns Samsung Electronics and the memory-chip cycle into the index itself – and what that means for anyone tracking or buying Korean equities.
Korea’s KOSPI jumped 4.4% to close back above 7,000 as Alphabet’s earnings and raised AI capex guidance reignited chip sentiment. Foreign investors bought a net ~$1.5B of KOSPI shares, and the KOSDAQ’s 5.2% surge briefly tripped a buy-side sidecar.