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Brazil's stock index closed down 2.67%, the biggest drop since January 2023 after the Brazilian central bank raised interest rates.Broadcom's share price rose more than 10% after the US market closed. In the news, Broadcom's fourth-quarter profit was better than expected, and the demand for artificial intelligence boosted growth.Goldman Sachs Asset Management announced the liquidation of three exchange-traded funds.

Biden will attend the virtual meeting of the Group of Seven scheduled for 9: 30am EST (9: 30pm Beijing time).Google successfully attacked OpenAI：ChatGPT Vision was launched in the middle of the night. Yesterday, after Google enlarged its recruitment to release Gemini 2 and provided free services, OpenAI followed closely today (12-day conference Day6) and launched the long-awaited ChatGPT Vision function, bringing users a richer multi-modal interactive experience. In addition to the original advanced voice mode, you can now make video calls with ChatGPT, share the screen, and interact with Santa Claus in real time. The entire conference lasted for 11 minutes.Morgan Stanley downgraded Wharf to low allocation with a target price of HK$ 20.

Chip-concentrated stocks clustered in four major industries, and 43 stocks fell for more than three consecutive periods. According to the statistics of Securities Times and DataBao, as of December 12, 300 stocks disclosed the number of shareholders in the latest period, compared with the previous period (November 30), there were 162 stocks with a decrease in the number of shareholders. Specifically, the number of shareholders in 29 stocks decreased by more than 5%, and the number of shareholders in 5 stocks decreased by more than 10%, including Dongfang Huanyu, Zhongshe, Baina Qiancheng, Midland New Materials and Hengshuai. Many chip-concentrated stocks have performed well in the recent market. According to the statistics of DataBao, the average share capital of 126 chips has increased by 4.86% since last month, and the cumulative increase of 18 stocks is above 10%. The top gainers are Guoan Da, Beiwei Technology and Silk Road Vision, which have increased by 42.5%, 26.18% and 21.44% respectively. From the industry point of view, the number of chip concentrated stocks is the largest in the four major industries of mechanical equipment, power equipment, electronics, medicine and biology.Yuanda Jinghua Securities upgraded the rating of Taiwan Optoelectronic Materials to Buy with a target price of 660 yuan NT.Yuanda Jinghua Securities upgraded the rating of Taiwan Optoelectronic Materials to Buy with a target price of 660 yuan NT.