养殖业板块8月27日跌1.63%，天域生物领跌，主力资金净流出9.21亿元

Market Overview - The aquaculture sector experienced a decline of 1.63% on August 27, with Tianyu Biological leading the drop [1] - The Shanghai Composite Index closed at 3800.35, down 1.76%, while the Shenzhen Component Index closed at 12295.07, down 1.43% [1] Stock Performance - Notable stock performances in the aquaculture sector include: - Zhengbang Technology (002157) closed at 3.04, up 1.67% with a trading volume of 4.3755 million shares and a turnover of 1.363 billion yuan [1] - Tianyu Biological (603717) closed at 8.31, down 6.52% with a trading volume of 228,400 shares and a turnover of 196 million yuan [2] - Other significant declines include: - Xinnong (000876) down 1.56% to 10.12 [1] - Wens Foodstuff (300498) down 2.00% to 18.11 [1] Capital Flow - The aquaculture sector saw a net outflow of 921 million yuan from institutional investors, while retail investors had a net inflow of 459 million yuan [2] - The capital flow for specific stocks indicates: - Huaying Agriculture (002321) had a net inflow of 21.13 million yuan from institutional investors [3] - ST Tianshan (300313) experienced a significant net outflow of 8.74 million yuan from institutional investors [3]