The financing balance of the two cities increased by 12.46 billion yuan.

As of April 28, the total margin financing balance on the Shanghai Stock Exchange was 910.622 billion yuan, an increase of 670 million yuan from the previous trading day; the margin financing balance on the Shenzhen Stock Exchange was 876.839 billion yuan, an increase of 576 million yuan from the previous trading day; the total margin financing balance of the two exchanges was 1.787461 trillion yuan, an increase of 1.246 billion yuan from the previous trading day.