The KOSPI and KOSDAQ surged together, triggering buy sidecars in both markets. Bargain hunting flowed in after recent sharp falls, and the KOSDAQ rose more than 5 percent.

On July 10, the KOSPI ended up 184.03 points, or 2.52 percent, at 7,475.94.

The index opened up 260.58 points, or 3.57 percent, at 7,552.49 and rose as high as 7,704.93 in intraday trade. It later gave up part of its gains and finished around the 7,400 level.

In the main market, institutions net bought 1.1319 trillion won. Retail investors and foreigners net sold 772.8 billion won and 322.6 billion won, respectively.

The Korea Exchange triggered a buy sidecar in the main market at 12:54:55 p.m. The number of sidecar triggers in the main market this year rose to 34. Buy and sell sidecars were triggered 17 times each.

Most top market-cap stocks rose. Samsung Electronics ended up 7,000 won, or 2.52 percent, at 285,000 won.

SK Square rose 6.18 percent, Samsung Electro-Mechanics gained 6.10 percent and Hyundai Motor added 2.69 percent. LG Energy Solution rose 3.99 percent, Samsung Life gained 4.45 percent, KB Financial Group rose 7.58 percent and Samsung Biologics added 5.28 percent.

SK Hynix, however, fell 6,000 won, or 0.27 percent, to end at 2.18 million won. With a U.S. American depositary receipt listing ahead, profit-taking emerged during the session, it was seen. The market is watching the ADR price to be formed in the United States and whether it will trade at a premium to domestic shares.

The KOSDAQ ended up 43.43 points, or 5.47 percent, at 837.43. After failing to regain the 800 level the previous day, the index jumped and climbed to the 830 level.

A buy sidecar was also triggered in the KOSDAQ market at 1:08 p.m. KOSDAQ sidecar triggers this year total 19, with 12 buy triggers and 7 sell triggers, matching the level seen in 2008.

The won stood at 1,503.00 per dollar, down 4.00 won, or 0.27 percent, from the previous session.

A view that recent declines in the local stock market were excessive, a rebound in U.S. semiconductor shares and a recovery in expectations for artificial intelligence investment appeared to improve investor sentiment.

Still, with gains large enough to trigger sidecars in both markets during the session, volatility is assessed to be continuing.