Stocks in the memory sector opened sharply higher in early trading. At the time of writing, XL 2x Long SK Hynix (07709) was up 23.57%, trading at HK$96.98. Montage Tech (06809) rose 14.32% to HK$429.40. GigaDevice (03986) gained 7.34%, reaching HK$526. Samsung 2x Long ETF (07747) increased by 7.95%, quoted at HK$150.