Feng Huang Wang Cai Jing·2025-12-15 14:36Group 1 - Major U.S. stock indices opened higher, with the Dow Jones up 0.31%, Nasdaq up 0.58%, and S&P 500 up 0.47% [1] - Most popular Chinese concept stocks declined, with the Nasdaq Golden Dragon China Index down 0.56%, Baidu down over 2%, and Alibaba and Li Auto down over 1% [1] - Storage concept stocks saw gains, with Micron Technology up over 2%, and Western Digital and Seagate Technology up over 1% [1] Group 2 - iRobot, a well-known developer of robotic vacuum cleaners, announced bankruptcy restructuring, with shares plummeting 73% pre-market [2] - iRobot plans to delist and become a wholly-owned subsidiary of a Chinese manufacturing company, with common stockholders expected to receive no equity in the restructured company [2] Group 3 - Oracle disclosed approximately $150 billion in new data center leasing commitments in a recent regulatory filing, with total leasing commitments reaching $248 billion, primarily related to data centers and cloud capacity arrangements [3] - This represents a significant increase from $99.8 billion reported as of August 31 [3] Group 4 - Seagate Technology and Western Digital were both included in the Nasdaq 100 index annual component adjustment, effective December 22, 2025 [4] - Four other companies also joined the index: Alnylam Pharmaceuticals, Faro Technologies, Insmed, and ChipMOS Technologies [4] Group 5 - Sanofi's stock fell over 4% due to setbacks for an experimental drug for multiple sclerosis, which failed to meet key trial endpoints, and indications from U.S. regulators that approval decisions may be delayed [5]