KRX activates buy-side sidecar for KOSPI on sharp rise

The Korea Exchange activated a buy-side sidecar for KOSPI-listed shares on Wednesday after the index rose sharply. Program trading was suspended for five minutes at 9:53 a.m.; by 9:55 a.m., the KOSPI had gained 4.54 percent to 5,894.26. Strong AI-driven semiconductor earnings lifted investor sentiment ahead of the Federal Reserve’s interest rate decision, following SK hynix’s third-quarter results and shareholder-return announcement.

The KOSPI opened 2.23 percent higher before adding 255.92 points.

SK hynix reported record-high third-quarter revenue and operating profit, citing robust memory chip demand.

SK hynix announced a shareholder return program worth more than 100 trillion won for 2026.

A buy-side sidecar is triggered when the KOSPI 200 Futures Index rises at least 5 percent for one minute or longer.

Published Oct 28, 2026 10:04 am KST

Officials work at a dealing room of Hana Bank headquarters in Seoul, Wednesday. Yonhap

Korea's bourse operator on Wednesday activated a buy-side sidecar for the benchmark Korea Composite Stock Price Index (KOSPI) as the stock index rose sharply.

Program trading for the KOSPI-listed shares was suspended for five minutes at 9:53 a.m., according to the Korea Exchange (KRX).

After opening 2.23 percent higher, the KOSPI added 255.92 points, or 4.54 percent, to 5,894.26 as of 9:55 a.m.

The index rallied as strong artificial intelligence (AI)-driven semiconductor earnings lifted investor sentiment ahead of the Federal Reserve's interest rate decision.

Before the opening bell, SK hynix Inc. reported record-high revenue and operating profit for the third quarter, driven by robust memory chip demand, and announced a shareholder return program worth more than 100 trillion won ($75.3 billion) for 2026.

A buy-side sidecar is triggered when the KOSPI 200 Futures Index rises 5 percent or more for at least one minute.

韩国交易所周三启动了针对KOSPI上市股票的买入侧盘交易，此前该指数大幅上涨。程序化交易于上午9:53暂停5分钟；截至上午9:55，KOSPI指数上涨4.54%，至5894.26点。在SK海力士公布第三季度业绩和股东回报计划后，强劲的AI驱动型半导体盈利提振了投资者在美联储利率决议前的信心。

韩国综合股价指数（KOSPI）开盘上涨2.23%，随后上涨255.92点。

SK海力士公布第三季度营收和营业利润均创历史新高，主要得益于强劲的存储芯片需求。

SK海力士宣布了一项股东回报计划，到2026年将向股东返还超过100万亿韩元。

当 KOSPI 200 期货指数上涨至少 5% 并持续一分钟或更长时间时，就会触发买入侧联动交易。

发布于2026年10月28日上午10:04（韩国标准时间）

周三，工作人员在首尔韩亚银行总部交易室工作。（韩联社）

周三，韩国证券交易所运营商启动了基准韩国综合股价指数（KOSPI）的买入侧盘交易，此前该股指大幅上涨。

据韩国交易所（KRX）消息，韩国综合股价指数（KOSPI）上市股票的程序化交易于上午9点53分暂停5分钟。

韩国综合股价指数（KOSPI）开盘上涨2.23%后，截至上午9:55，上涨255.92点，涨幅4.54%，至5894.26点。

在美联储利率决议公布前，强劲的人工智能（AI）驱动型半导体盈利提振了投资者情绪，推动该指数上涨。

在开盘前，SK 海力士公司公布了第三季度创纪录的营收和营业利润，这主要得益于强劲的存储芯片需求。该公司还宣布了一项价值超过 100 万亿韩元（753 亿美元）的股东回报计划，该计划将于 2026 年实施。

当 KOSPI 200 期货指数上涨 5% 或以上并持续至少一分钟时，就会触发买入侧联运。