The KOSPI index is displayed on an electronic signboard, along with the Kosdaq index and won-dollar exchange rate, at a dealing room at Hana Bank in Seoul, Tuesday. Yonhap

Korean stocks were trading more than 3 percent higher late Tuesday morning, recovering from the previous session's over 8 percent plunge, as major semiconductor shares bounced back amid a ceasefire between Israel and Iran and investors' confidence in the artificial intelligence (AI) industry.

The benchmark Korea Composite Stock Price Index (KOSPI) had added 260.6 points, or 3.48 percent, to 7,745.01 as of 11:20 a.m., after rising as high as 7,847.74.

With the sharp rise, the Korea Exchange had activated a buy-side sidecar for the KOSPI at around 9:12 a.m., halting program trading for five minutes.

Program trading on the KOSDAQ was also suspended for five minutes from 9:28 a.m. after the bourse issued a buy-side sidecar for the secondary index.