- The provided content does not include any quantitative models or factors, nor their construction, evaluation, or backtesting results[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41]

Group 1 - The opening performance of ETFs showed mixed results, with E Fund's CSI 300 ETF (517030) leading the gains at 5.07% [1] - A100 ETF (159627) increased by 4.43%, while the STAR 50 ETF from Southern (588150) rose by 3.95% [1] - On the downside, the German ETF (159561) fell by 1.81%, and gold stock ETFs (517520 and 159562) declined by 1.71% and 1.7% respectively [1] Group 2 - A-shares accounts can now buy Hong Kong stocks on a T+0 basis without the need for a Hong Kong Stock Connect [1]