The KOSPI experienced a sharp intraday decline, triggering a "sidecar"—a temporary suspension of program trading sell orders.

The Korea Exchange announced that it suspended the effect of program sell orders for five minutes starting at approximately 11:12:12 a.m. today (June 26) due to volatility in the KOSPI 200 futures index.

At the time of the trigger, the KOSPI 200 futures index stood at 1,382.00, down 72.88 points, or 5.00%, from the previous day's closing price.

A sell-side sidecar is triggered when the KOSPI 200 futures index falls by 5% or more and maintains that level for one minute.

As of 11:19 a.m., the KOSPI was trading at 8,441.65, down 488.65 points, or 5.47%, from the previous day.

The index opened at 8,813.18, down 117.12 points, or 1.31%, from the previous day, and subsequently expanded its losses.

In the KOSPI market, individual investors net purchased 2.9568 trillion won worth of stocks.

Foreigners and institutions net sold 2.5283 trillion won and 471.6 billion won, respectively.

The KOSPI is declining due to the burden of gains over the past two trading sessions and the impact of the Nasdaq Composite Index's fall in the U.S. overnight.

Among large-cap stocks, the "semiconductor duo" Samsung Electronics fell 6.42%, and SK Hynix dropped 7.20%.

Most stocks showed weakness, with SK Square falling 9.58%, Hyundai Motor down 4.37%, and Samsung Life Insurance down 3.47%.

By sector, most industries were in the red, with electrical and electronics falling 6.28%, securities down 6.14%, and manufacturing down 6.01%.

At the same time, the KOSDAQ index was at 865.60, down 22.21 points, or 2.50%, from the previous day.

The KOSDAQ index opened at 884.43, down 3.38 points, or 0.38%, from the previous day, and continued its downward trend.

In the KOSDAQ market, institutions and foreigners net purchased 192.4 billion won and 4.9 billion won, respectively.

On the other hand, individual investors net sold 205 billion won.

By stock, Alteogen fell 6.00%, EcoPro BM dropped 5.63%, and EcoPro declined 5.29%.

Among equipment stocks, Wonik IPS rose 11.05%, Jusung Engineering gained 0.96%, and EO Technics climbed 5.87%.

(Photo: Yonhap News)