大金融板块拉升，证券ETF南方(512900)涨1.28%，近20个交易日资金净流入额8.66亿元

Group 1 - The A-share market is experiencing active trading, with the Shanghai Composite Index surpassing 3900 points for the first time in over a decade [1] - The financial sector, particularly the brokerage segment, is gaining attention as the market rebounds, with the Southern Securities ETF (512900) rising by 1.28% and achieving a year-to-date increase of over 9% [1] - The Southern Securities ETF has seen a net inflow of 866 million yuan over the past 20 trading days, bringing its latest scale to 7.853 billion yuan [1] Group 2 - The financing balance in the A-share market continues to rise, reaching a historical high of 24.292 billion yuan as of October 9, with a net purchase of 50.8 billion yuan on that day, marking the second-highest record in history [1] - The number of new accounts opened on the Shanghai Stock Exchange in August was 2.65 million, reflecting a year-on-year increase of 165% and a month-on-month increase of 35% [1] - The average daily trading volume in September was 2.4 trillion yuan, showing a nearly 10% month-on-month increase [1] Group 3 - According to China Merchants Securities, the brokerage sector has low public fund holdings at 0.90%, significantly below the benchmark of 4.26% [2] - As of September 30, the brokerage sector has recorded a year-to-date increase of 9%, ranking 20th out of 32 industries [2] - The brokerage index's price-to-book (PB) ratio is at 1.58 times, positioned at the 45.7th percentile over the past decade, indicating potential for upward valuation [2]