The Hang Seng Index climbed 1.61%, gaining 405 points to close the morning session at 25,521 points, while the Hang Seng Tech Index advanced 2.01%. Trading volume in Hong Kong stocks reached 118.2 billion Hong Kong dollars during the morning session.

The memory concept sector strengthened, with the logic of memory revaluation continuing to solidify. The head of SK Group warned that next year could see the worst "memory shortage" on record. 兆易创新 (03986) surged 6.85%, while 澜起科技 (06809) rose 4.8%.

Two major foundries posted simultaneous second-quarter earnings growth. HUA HONG GRACE (01347) jumped 7.14%, and SMIC (00981) gained 7.27%.

PCB concept stocks led the gains. The PCB/CCL sector reported strong first-half performance, with institutions optimistic about further growth trends in the second half of the year. 建滔积层板 (01888) rose 5%, while 建滔集团 (00148) climbed 5.6%.

长飞光纤光缆 (06869) advanced 7.7% following reports that China Mobile's procurement price cap was raised, with institutions seeing investment opportunities in the fiber optic cable sector.

亚博科技控股 (08279) extended its gains by 12% after partnering with the Hong Kong Gold Exchange to comprehensively upgrade the city's precious metals trading, clearing, and settlement systems.

思摩尔国际 (06969) rose over 7% as the Hang Seng Tech Index's methodology underwent a revamp, with institutions suggesting the company could enter the index.

药明康德 (02359) gained over 4% to hit a new all-time high, after a preliminary injunction was approved and the company raised its full-year 2026 performance guidance.

中创新航 (03931) rose 6.6% after forecasting a more than doubling of first-half net profit, driven by continued business scale expansion.

Container shipping stocks rallied across the board. Container shipping rates on the Europe route surged over 10% intraday, as geopolitical risks remain, potentially delaying the resumption of Red Sea navigation. 东方海外国际 (00316) rose 7%, 德翔海运 (02510) gained 6%, and 海丰国际 (01308) advanced 4%.

商汤-W (00020) jumped 10% after projecting a mid-term turnaround with a net profit of 500 million to 700 million yuan, marking its first consolidated profit since listing.

银诺医药-B (02591) plunged over 24% as its one-year lock-up period expired, with 384 million shares becoming eligible for trading.

小菜园 (00999) fell over 2% after reporting a 24.2% year-on-year decline in attributable net profit for the first half, with in-store average spending per customer dropping to 50.5 yuan.