Life insurance stocks offer attractive risk/reward profiles at current share levels, JPMorgan analyst Jimmy Bhullar tells investors in a research note. The analyst, who's been cautious on the sector for the past two years, says that while his fundamental view "remains mixed," the macro environment has improved, investor sentiment has become negative, and valuation levels are more reasonable following the group's significant underperformance. He maintains Overweight ratings on Aflac (AFL), Lincoln National (LNC), and Prudential (PRU) and reiterates his negative stance on Brighthouse Financial (BHF).