美国至7月4日当周MBA抵押贷款再融资活动指数 829.3，前值759.7。

Core Viewpoint - The MBA refinancing activity index in the U.S. for the week ending July 4 reached 829.3, an increase from the previous value of 759.7, indicating a significant rise in refinancing activities in the mortgage market [1] Group 1 - The current MBA refinancing activity index is 829.3, which shows a notable increase compared to the prior value of 759.7 [1]