Samsung Electronics and SK Hynix have added about ₩117 trillion ($82.7 billion) to their combined cash holdings since the start of the year, underscoring how the AI-driven memory upcycle is reshaping South Korea's semiconductor sector. By the end of Q2, Samsung held ₩190 trillion ($134.2 billion) in cash and short-term financial instruments and SK Hynix held ₩87.96 trillion ($62.2 billion), up 50.97% and 151.75% respectively from the end of last year. The buildup follows record earnings, with expectations that the larger cash reserves could support capital expenditure, shareholder returns and M&A. The strength is spreading across the sector: 138 listed semiconductor companies held ₩103.46 trillion ($73.1 billion) in cash and equivalents in Q1, up 26.7% from end-2024, far outpacing the 2.4% rise across all listed firms. The report also sketches the broader AI landscape feeding memory demand. Chinese developers have accelerated product launches, releasing 10 new models or major updates in about 70 days since June. DeepSeek's V4 Pro scored 53 on the Artificial Analysis Intelligence Index v4.1.1, behind GPT-5.6 Solo at 61 and Claude Opus 5 at 63, but its average cost per task was $0.06, or about 1/39th of Claude Opus 5's $2.34. Researchers said China is rapidly widening its role in the open-source AI ecosystem (publicly accessible model development), while South Korea, despite ranking third globally in AI model development, still lacks enough real-world deployment environments. Macro and market moves added to the picture. The won appreciated 9.4% against the dollar from the 1st of last month through the 11th of this month, the strongest gain among major currencies, helped by dollar weakness, improved FX market conditions and currency conversion tied to SK Hynix's U.S. ADR (American depositary receipt) issuance. The Bank of Korea (South Korea's central bank) also disclosed a $250.41 million stake in the SPDR Gold Trust ETF at end-June, marking its first gold investment in 13 years. At the same time, South Korea announced a broader financial package for housing and project finance, U.S. 10-year Treasury yields hit their highest auction level since 2007, and domestic semiconductor ETF flows split sharply between broad sector funds and products concentrated in Samsung Electronics and SK Hynix. The KOSPI rose 3.56% to 6,813.34 for a fourth straight gain, led by Samsung Electronics and SK Hynix.