Core Viewpoint - The brokerage sector is experiencing significant activity, with the Securities ETF Fuqun (515850) showing a substantial intraday increase of 6.27%, driven by strong performance from major brokerage firms [1] Group 1: Market Performance - As of September 26, the A-share margin trading balance reached 2.42 trillion yuan, following a record high of 2.44 trillion yuan in the previous trading day [1] - Major brokerage firms such as Guosheng Jinkong, Huatai Securities, GF Securities, and Xiangcai Co. achieved limit-up gains, while Dongwu Securities, Dongfang Securities, and CITIC Securities rose over 7% [1] Group 2: Business Dynamics - Brokerages are increasing the scale of financing-related businesses in response to the sustained high demand in the margin trading market [1] - The rise in margin trading activities is aimed at meeting investor financing needs and enhancing customer service levels, while also allowing brokerages to expand market share and maximize credit business revenue [1] Group 3: Investment Opportunities - The Securities ETF Fuqun (515850) closely tracks the CSI All Share Securities Company Index, primarily consisting of large brokerages while also including smaller firms [1] - In a recovering market, large-cap stocks are expected to demonstrate strong leadership effects, while smaller, high-potential stocks may offer substantial profit elasticity [1]