While recent changes can be seen as an opportunity for long-term savers, these developments add complexity and liability to advisors and employers managing retirement plans.

UnitedHealth Group has stepped up its lobbying efforts targeting the Trump administration as it seeks to rebound from numerous lawsuits and regulatory issues that have caused its market value to decline by 40% since April.

Advisors who left the wirehouse have argued they're owed millions in deferred compensation.

About half of plan sponsors said the pace of change in retirement plans is exhausting.