医疗器械板块11月3日跌0.1%，博拓生物领跌，主力资金净流入3亿元

Market Overview - The medical device sector experienced a slight decline of 0.1% on November 3, with Botao Bio leading the drop [1] - The Shanghai Composite Index closed at 3976.52, up 0.55%, while the Shenzhen Component Index closed at 13404.06, up 0.19% [1] Top Performers - N Danna saw a significant increase of 497.08%, closing at 102.10 with a trading volume of 67,900 shares and a transaction value of 665 million [1] - Weigao Blood Purification rose by 10.01%, closing at 42.30 with a trading volume of 11,500 shares [1] - Chutian Technology increased by 7.95%, closing at 12.09 with a trading volume of 829,300 shares and a transaction value of 978 million [1] Underperformers - Botao Bio led the decline with a drop of 8.32%, closing at 42.73 with a trading volume of 62,700 shares and a transaction value of 266 million [2] - ZhenDe Medical fell by 5.61%, closing at 89.67 with a trading volume of 289,000 shares [2] - Zhongke Meiying decreased by 3.99%, closing at 21.41 with a trading volume of 24,700 shares [2] Capital Flow - The medical device sector saw a net inflow of 300 million from institutional investors, while retail investors experienced a net outflow of 415 million [2][3] - Notable net inflows from institutional investors included ZhenDe Medical with 312 million and Furuishi with 69.51 million [3] - Retail investors showed significant outflows in stocks like Chutian Technology and East Fortune, with outflows of 4.48 million and 1.12 billion respectively [3]