Fannie Mae and Freddie Mac generated a combined $4.86 billion in net income during the second quarter of 2017, down a modest 2.4 percent from the first three months of the year, according to an Inside Mortgage Finance analysis of earnings reports released this week. The two government-sponsored enterprises have racked up $9.85 billion in net income through the first six months of the year, more than double their combined earnings for the same period in 2016. In the first quarter of last year, interest rate volatility yielded significant accounting losses on their hedges, which suppressed net income at Fannie and produced a net loss at Freddie. Freddie officials said...