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Accelerated Localization of Memory Chips: Yangtze Memory Holdings completed IPO coaching acceptance on August 19. Counterpoint data shows Yangtze Memory’s Q2 NAND shipment share entered the global top‑three for the first time. Morgan Stanley forecasts a 50 % price hike for mature‑node DRAM in Q3, and S&P upgraded Micron’s credit rating to BBB+.
Samsung raised its foundry prices amid surging AI‑chip demand. New orders for SF4/SF5 nodes increased by 10‑15 %, while 8 nm prices rose by nearly 10 %. Revenue from advanced process nodes will account for more than half of its total revenue this year. TSMC completed R&D validation for its A16 backside power‑rail process, and lifted its 2026 capital‑expenditure guidance to USD 60‑64 billion.
TFC Communication’s CPO‑supporting products have entered mass‑production and delivery phase, with H1 net profit rising by 33.92 %. LightCounting projects the global optical‑communication‑components market to reach approximately USD 29.4 billion in 2026 (+30.7 % YoY), and silicon photonics may capture a 70 % market share in the 1.6T era.
Mid‑year earnings delivery for power semiconductors: Dongwei Semiconductor posted a 285.41 % jump in H1 net profit (driven by data‑center power‑supply drivers). Tianyue Advanced recorded H1 revenue of RMB 914 million with narrowing losses.
On August 19, A‑share tech stocks corrected on heavy trading volume. The STAR 50 Index fell 6.89 %, and main‑fund net outflow from the electronics sector hit RMB 58.188 billion. The China‑South‑Korea Semiconductor ETF was suspended. Overnight, US‑listed memory and optical‑communication names extended declines while the broader market closed higher.
In-depth Analysis
Optical Communications / Optical Chips: TFC Communication posted H1 net profit of RMB 1.204 billion (+33.92 %). Its CPO‑supporting products have entered mass‑production delivery phase with yields qualified for large‑volume manufacturing. Passive‑component production lines operate at high utilization rates and capacity expansion will continue in H2, while supply of previously constrained bottleneck materials has improved. In‑depth analysis from Jiwei Net shows the global optical‑communication‑components market reached approximately USD 22.5 billion in 2025 and is projected to hit USD 29.4 billion in 2026 (+30.7 %). Innolight ranks first with a 22.1 % market share, followed by Eoptolink at 14.1 % and Accelink at 7.0 %; the top‑three players account for a combined 53.4 %. CMB International forecasts EML and silicon‑photonics solutions will each take half of the 800G market, while silicon photonics will capture roughly 70 % share for 1.6T products. Note that leading A‑share optical‑module stocks plunged more than 9 % on August 19, and Lumentum and Coherent fell 5‑6 % overnight in the US market, pointing to heightened volatility at elevated valuations.
Advanced Packaging: TSMC has completed R&D and qualification for its A16 Back‑Side Power‑Delivery‑Network (BSPDN) advanced‑logic process, paving the way for key nodes beyond 2 nm. The supply‑demand imbalance and order backlog for CoWoS persist. Back‑end order spill‑over to Intel’s Malaysia plant further validates that global advanced‑packaging capacity bottlenecks are concentrated in back‑end processes. Domestically, JCET achieved important progress in TSV technology. HegenEDA’s UCIe chiplet‑interconnection IP supported the launch of Orient Compute Chip’s 3D compute chip, accelerating the build‑out of domestic Chiplet / 3D‑packaging ecosystem. No major fresh updates emerged for ABF‑film / IC carrier‑boards today (Ajinomoto’s 30 % supply cut and domestic CBF/NBF/GBF substitution were covered on August 18).
SiC / Power Semiconductors: Dongwei Semiconductor recorded H1 revenue of RMB 736 million (+19.58 %) and net profit of RMB 106 million (+285.41 %). Automotive‑grade and industrial‑grade power products account for approximately 79 % of its business. Demand from data‑center / compute‑server power supplies serves as the major incremental driver, with Q2 net profit surging 1712 % quarter‑on‑quarter. Tianyue Advanced posted H1 revenue of RMB 914 million (+15.10 %) with narrowing losses, and keeps advancing its 8‑inch SiC‑substrate program. LY‑Science projected H1 net profit growth of 207‑217 %, with sales of ON Semiconductor‑branded SiC products multiplying several‑fold. The thesis of rising volume and prices across power semiconductors continues to receive validation.
Memory & Computing Chips: Yangtze Memory Holdings completed IPO coaching acceptance on August 19. As mainland China’s sole 3D‑NAND IDM, its Xtacking architecture has iterated to version 4.0. Counterpoint data shows its Q2 NAND shipment share entered the global top three for the first time, trailing only Samsung and SK Hynix. Morgan Stanley forecasts a 50 % price increase for mature‑node DRAM in Q3 and an additional 10 % hike in Q4, with SLC‑NAND prices rising 50 % per quarter. S&P lifted Micron’s long‑term rating from BBB to BBB+, stating AI‑driven memory demand is likely to persist through 2028. An in‑depth report from Jiwei Net notes current DRAM/NAND inventory stands at merely around four weeks. Spot prices for DDR4 16 Gb have soared more than 12‑fold since June 2025, and the global memory‑market size is expected to exceed USD 800 billion in 2026.
Equipment & Materials: TSMC raised its 2026 capital?expenditure budget by approximately 15?% to USD?60?64?billion. Intel lifted capex to USD?20?billion (+40?% for equipment spending), and SK Hynix set capex at roughly USD?28?billion (+45?%), sustaining prosperity across the equipment segment. Tuojing Chuangyi (Shenyang) increased its registered capital to RMB?3.36?billion (+572?%). Leon Micro indicated silicon wafers have entered a price?hike cycle, with 12?inch shipments expanding sharply and demand for heavily?doped silicon wafers rising alongside AI compute?power deployment. Shanghai Simg Technology posted H1 revenue of RMB?2.317?billion (+36.51?%) yet recorded a net loss attributable to parent of RMB?965?million, reflecting diverging profitability within the silicon?wafer sector.
Wafer Foundry: AI‑chip‑fueled capacity tightening prompted Samsung to raise prices for certain new advanced‑node orders by as much as 15 % (SF4/SF5 +10‑15 % month‑on‑month; 8 nm nearly +10 %). Its Pyeongtaek SF4 fab runs at full capacity, and revenue from advanced‑process nodes will exceed 50 % this year. DBS upgraded SMIC‑H target price from HKD 90 to HKD 96, noting Q2 gross margin of 25.3 % and Q3 guidance of 26‑28 % both beat market expectations.
Policy / Macro Backdrop: The Ministry of Foreign Affairs reaffirmed firm opposition to taking sides and bloc confrontation over AI issues. Global capital continues to increase exposure to Chinese tech assets. Between July and mid‑August, 217 foreign‑institutional investors surveyed 163 A‑share listed firms, focusing on integrated circuits, compute hardware and optical modules. South‑Korean QFII investors had established positions in CXMT no later than July 28. On the market front, A‑share compute and semiconductor sectors underwent a collective correction on August 19. The China‑South‑Korea Semiconductor ETF suspended trading until 10:30 on August 20.
Daily Investment Tips
1. Memory localization is entering an accelerated capital‑market phase. Yangtze Memory Holdings’ completion of IPO coaching acceptance, together with its first‑ever top‑three global market share ranking, coupled with Morgan Stanley’s forecast of a 50 % price hike for mature‑node DRAM in Q3, warrants continuous monitoring of memory equipment, materials and domestic‑memory‑chain stocks.
2. Risk Warning: The A‑share technology sector saw a volume‑driven correction on August 19 with massive profit‑taking (main‑fund net outflow from the electronics sector exceeded RMB 58 billion in a single day). Heightened volatility persists for overseas memory and optical‑communication names at high valuations. Amplified swings in rich‑valuation stocks should be watched out for in the short term. Samsung’s foundry price increases may trigger industry‑wide price revisions; keep an eye on volume‑and‑price pass‑through for domestic foundry and packaging‑and‑testing segments.
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