The adjustable-rate mortgage share of total originations increased in the first quarter of 2017 as some borrowers shifted to the product with interest rates projected to increase. An estimated $42.0 billion of ARMs were originated in the first quarter of 2017, according to Inside Mortgage Finance. While production was down by 23.6 percent from the previous quarter, total first-lien originations declined by 33.6 percent during that time ... [Includes one data chart]