Group 1 - Two Sigma's index-enhanced strategy fund focusing on the CSI 500 index achieved a return of 52.5% in the first nine months of 2023, outperforming its benchmark by 23 percentage points [1] - The fund has an average annualized return of 20.8% since its establishment in 2023, and the firm raised over 1 billion RMB in new funding, pushing its asset management scale over 10 billion RMB [1] - Approximately 75% of the new funds will be allocated to the CSI 500 strategy fund, while the remaining 25% will go to another macro strategy fund, which has returned 11.6% in the first nine months of 2023 and 119.9% cumulatively since its launch in 2020 [1] Group 2 - Two Sigma is a quantitative hedge fund based on Wall Street, managing over $60 billion as of 2023, utilizing big data analysis and AI models across various asset classes [2] - The firm has faced management issues, including a model parameter tampering incident in 2022 that resulted in a $170 million loss for clients and a $90 million penalty from the SEC in 2024 [2] - Two Sigma's governance structure is undergoing reform following the exit of its two co-founders due to long-standing disagreements [2] Group 3 - Wu Jian, a former vice president at Two Sigma, was involved in the 2022 model parameter tampering incident and was later dismissed in 2024 after an internal investigation [2] - Wu Jian's salary in 2022 reportedly surged to $23.5 million (approximately 167 million RMB), which he showcased on social media, leading to industry discussions [3]