Pre-market news roundup for US stocks: US Treasury to take on nearly $1 trillion in US Treasuries, imminent announcement of the largest financial offensive against Iran to date, and NVIDIA plans to invest in Perplexity.

Key pre-market news for US stocks is as follows: The US Treasury Department said it may use around $950 billion in general account funds to repurchase bonds. Boosted by the news, the yield on the 10-year US Treasury note fell 4 basis points to 4.70%. US Treasury Secretary Scott Bessent will announce details of sanctions on Iran at 2:00 AM Beijing time. Bessent stated that the US is entering a decisive phase, with a "D-Day" for Iran's economy approaching, marking the largest financial offensive ever launched against an adversarial power. Nvidia is reportedly in discussions to invest in AI startup Perplexity at a valuation exceeding $30 billion, and is also considering a technology licensing deal. Xpeng Robotics has completed over $900 million in financing, setting a new record for a single private placement in China's embodied intelligence sector. Investors include IDG Capital, Tencent, and Alibaba. Alibaba's management has made share purchases: Joseph Tsai and Yongming Wu each bought HK$80 million and HK$40 million worth of Alibaba stock respectively. The day before, the company announced a HK$80 billion new share placement. SK Hynix executives recently stated that the future AI industry must not only focus on HBM itself, but also on how packaging technology impacts HBM. The company is developing hybrid bonding packaging technology to achieve the goal of stacking 20 or more layers. A Micron researcher warned that the "memory wall" remains a challenge: AI accelerator computing performance triples every two years, while HBM development has grown by less than double over the same period, which could exacerbate memory shortages. Goldman Sachs sharply raised its forecasts for global semiconductor equipment spending in 2026, 2027, and 2028 to $150 billion, $218 billion, and $281 billion respectively, and maintained a bullish stance on the semiconductor equipment sector.