The average daily trading volume of agency MBS hit $223.2 billion in September, the strongest reading of the year and a sign that liquidity in the market has improved. According to figures compiled by the Securities Industry and Financial Markets Association, daily trading volume increased by 17.7 percent compared to the same month a year ago. But the year-to-date averages are much closer: $206.6 billion for 2016 compared to $199.9 billion last year. In the agency space there is...