美股三大指开盘均跌超1%，英伟达、谷歌跌超2%

Group 1 - Major US stock indices opened significantly lower, with the Dow Jones down 1.28%, S&P 500 down 1.33%, and Nasdaq down 1.59% [1] - Notable declines were observed in companies such as Nvidia, Google, Amazon, and Broadcom, each dropping over 2% [1] - United Microelectronics Corporation (UMC) surged over 14%, marking an 18% increase year-to-date, following the official launch of its fourth-generation SuperFlash technology [1] - 3M Company’s stock fell by 4.9% after announcing annual profit expectations below market estimates [1] Group 2 - Quantum computing company Quantinuum, backed by Honeywell, is reportedly advancing towards an IPO, collaborating with Morgan Stanley and JPMorgan, aiming for a valuation of $15 billion to $20 billion and seeking to raise $1.5 billion [2] Group 3 - AI application stock Applovin experienced a pre-market drop of over 7% following a short-seller report from Capitalwatch, which accused the company of systemic compliance risks and significant financial crimes [3] Group 4 - The German government announced on January 19 that it will provide subsidies of up to €6,000 for families purchasing new electric vehicles, aiming to boost the domestic electric vehicle industry after ending previous subsidies in late 2023 [4] Group 5 - Sony announced a memorandum of understanding with TCL to establish a joint venture that will take over Sony's home entertainment business, including televisions and audio products, with TCL holding 51% and Sony holding 49% [5]