In Seoul, the KOSPI rose 128.34 points or 2.24 percent to close at 5,859.08 after opening lower and falling as much as 1.99 percent to 5,616.50 early in the session.
Institutional investors bought a net 1.23 trillion won (US$915 million) of KOSPI shares, while retail investors sold 1.35 trillion won and foreign investors offloaded 373.1 billion won.
Samsung Electronics gained 1.78 percent to 229,000 won, while SK hynix advanced 3.81 percent to 1,472,000 won after both chipmakers recovered from early losses.
SK Square jumped 5.91 percent to 950,000 won after announcing plans to return at least 4.3 trillion won to shareholders from dividend income it expects to receive from SK hynix.
The company said it would return at least 60 percent of recurring dividend income to shareholders through 2028 and all special dividend income linked to SK hynix's investment gains from Kioxia.
The tech-heavy KOSDAQ rose 9.98 points, or 1.38 percent, to 734.36. Institutions bought a net 62.3 billion won, while foreign and retail investors were net sellers.
The South Korean won closed down 9.5 won at 1,343.8 per dollar.
Foreign investors remained net sellers of South Korean shares, while foreign buying of dollar futures added upward pressure on the dollar-won rate during the session. Exporters' dollar selling helped limit the rise.
South Korean government bond yields also rose across key maturities. The three-year yield climbed 2.5 basis points to 3.740 percent, the 10-year yield gained 2.6 basis points to 4.034 percent and the 30-year yield added 0.7 basis point to 4.131 percent.
In Tokyo, the Nikkei 225 fell 208.25 points, or 0.33 percent, to 63,081.86 as losses in Kioxia Holdings and other selected technology stocks outweighed gains in semiconductor equipment makers.
Kioxia plunged 15.78 percent to 11,345 yen after its profit outlook for the fourth quarter fell short of market expectations despite strong demand from AI data centers.
Tokyo Electron, by contrast, climbed 5.16 percent to 10,005 yen after forecasting a 50.6 percent increase in full-year net profit and announcing a share buyback of up to 150 billion yen ($950 million).
Among other benchmark shares, SoftBank Group fell 1.58 percent to 4,410 yen, Mitsubishi UFJ Financial Group lost 1.86 percent to 3,383 yen and Toyota Motor slipped 0.62 percent to 3,051 yen.
Taiwanese shares also finished lower after recovering from a much steeper drop earlier in the session.
The TAIEX fell 291.69 points, or 0.65 percent, to 44,920.14 after dropping as much as 812.73 points to 44,399.10. TSMC declined 1.69 percent to NT$2,330, weighing on the benchmark.
Hon Hai Precision Industry, better known as Foxconn, rose 2.24 percent to NT$251, while MediaTek gained 1.40 percent to NT$3,970.
Monday's mixed results in Asian markets followed another selloff in U.S. tech stocks on Friday, with the Nasdaq Composite falling 2.86 percent and the Philadelphia Semiconductor Index dropping 7.20 percent as disappointing corporate earnings revived concerns over heavy spending on artificial intelligence (AI).
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