# South Korea's KOSPI Index Drops 14.5% in Worst Weekly Loss Since 2008

- URL: https://stocks.freetheai.org/news/south-korea-s-kospi-index-drops-14-5-in-worst-weekly-loss-since-2008-c4fc16
- Published: 2026-10-16T15:11:44Z
- Category: markets; sentiment: bearish; impact: high
- Symbols: [KRX:KOSPI](https://stocks.freetheai.org/symbols/KRX-KOSPI), [NASDAQ:SKHY](https://stocks.freetheai.org/symbols/NASDAQ-SKHY), [OTC:SSNLF](https://stocks.freetheai.org/symbols/OTC-SSNLF)
- Written by our AI from expert market sources across the web for FreeTheAI Stocks, built by Vibhek Soni
- How write-ups are made: https://stocks.freetheai.org/how-we-write
- Not financial advice: https://stocks.freetheai.org/disclaimer

South Korean stocks suffered their sharpest weekly decline in nearly two decades as broad market selling battered major equity benchmarks. The KOSPI Composite Index (KRX:KOSPI) plunged 14.46% over the week, recording its steepest five-day drop since the October 2008 global financial panic following the collapse of Lehman Brothers. The downturn exceeded even the severe market losses experienced during the initial pandemic outbreak in March 2020.

The wave of selling hit technology heavyweights particularly hard. Thursday marked the heaviest downturn of the week, with the KOSPI dropping 7.57% in a single session and triggering a 20-minute trading halt via automatic circuit breakers. Semiconductor producer SK Hynix Inc. (NASDAQ:SKHY) plummeted 24.3% on the week, while Samsung Electronics Co., Ltd. (OTC:SSNLF) tumbled 17.8%. Both companies suffered their worst weekly performance since October 2008, dragging down broader market confidence.

Despite the sharp drawdown, South Korean equities remain up 34.5% for the year 2026. However, the KOSPI now trades 37.8% below its peak record close of 9,114.55. Investors will be keeping a close eye on whether key technology equities can find stability following Thursday's intense trading halt, or if broader market pressure will continue to weigh on Asian regional benchmarks.

## Key points

- South Korea's KOSPI Composite Index fell 14.46% in its worst weekly performance since October 2008.
- Thursday trading saw the KOSPI plunge 7.57%, triggering a 20-minute circuit breaker trading pause.
- SK Hynix Inc. dropped 24.3% and Samsung Electronics Co., Ltd. fell 17.8% for the week.
- The KOSPI sits 37.8% below its record close of 9,114.55, but remains up 34.5% in 2026.

## Questions and answers

### How much did South Korea's KOSPI index fall this week?

The KOSPI index dropped 14.46% for the week, marking its steepest weekly fall since October 2008.

### Why was trading paused on the South Korean stock exchange?

Trading was halted for 20 minutes on Thursday after the KOSPI index dropped 7.57% in a single day, activating automatic circuit breakers.

### How did SK Hynix and Samsung Electronics perform during the selloff?

SK Hynix Inc. fell 24.3% and Samsung Electronics Co., Ltd. declined 17.8% for the week, logging their worst weekly performance since October 2008.