Medical loss ratios for exchange insurers improved for the first nine months of 2017 compared to the previous three years, suggesting a gradual improvement in underwriting that could lead issuers to reach low single-digit margins in the sector in 2018 and beyond, according to a new S&P Global Analysis released last week. Still, with lingering uncertainties, the authors expect to see another round of price increases, product tweaks and potential market exits as insurers react to the repeal of the...