黑色家电板块8月20日涨2.31%，四川长虹领涨，主力资金净流出18.7亿元

Group 1 - The black home appliance sector rose by 2.31% on August 20, with Sichuan Changhong leading the gains [1] - The Shanghai Composite Index closed at 3766.21, up 1.04%, while the Shenzhen Component Index closed at 11926.74, up 0.89% [1] - Key stocks in the black home appliance sector showed varied performance, with Sichuan Changhong increasing by 4.46% to a closing price of 12.19 [1] Group 2 - The net capital outflow from the black home appliance sector was 1.87 billion yuan, while retail investors saw a net inflow of 1.417 billion yuan [2] - The table of capital flow indicates significant activity among retail investors compared to institutional investors [2]