The Southbound leveraged SK Hynix ETF (07709) jumped 8.5% to HK$44.56 after touching HK$44.60 intraday, its best level in more than a month. The fund has advanced for three consecutive sessions, up about 33.4% over that stretch, with turnover around HK$919 million, according to ETNet.

KB Securities noted inventories at Samsung Electronics and SK Hynix have fallen to under 10 days of supply, and it expects them to tighten further next year. The broker added that HBM4 requires roughly three times as many wafers as conventional DRAM, and continued expansion of HBM4 capacity could further constrain DRAM output. They forecast DRAM and NAND demand next year to exceed supply by more than 10%.

South Korean equities were firmer, with SK Hynix stock up about 3% to a one-month high and Samsung Electronics rising around 1.5%. The KOSPI index traded higher, up roughly 1.8% intraday.

In Hong Kong, the Southbound leveraged Samsung ETF (07747) rose about 5.3% to HK$82, the Southbound KOSPI ETF (03121) gained 2.3% to HK$7, and the A South Korea Covered Call ETF (03537) added around 1.7% to HK$10.04.

Meanwhile, the Hang Seng Index was down 0.7% at 25,244, with mainboard turnover above HK$24.8 billion.