We'll add more market news briefs throughout the day. Check back to read the latest. Fannie Mae's Home Purchase Sentiment Index for December 2015: The index increased 2.4 points to 83.2 in December. Respondents who said it is a good time to buy a house comprised 35 percent of the total. Respondents who said it is a good time to sell a house comprised 8 percent of the total. Mortgage Bankers Association's Mortgage Credit Availability Index (MCAI) for December 2015: The MCAI¬†decreased 2.4 percent to 124.3 in December 2015. The Conventional MCAI was down 4.8 percent over the month. The Conforming MCAI increased 0.1 percent month-over-month.   Mortgage rates: [graphiq id="b2w6fmfIyNL" title="30-Year Fixed Rate Mortgage Rates for the Past 6 Months" width...