According to @StockMKTNewz, The Wall Street Journal reports the Trump administration is proposing roughly flat rates for Medicare insurers next year, a change that falls well short of Wall Street expectations (source: The Wall Street Journal via @StockMKTNewz). @StockMKTNewz adds that UnitedHealth Group (UNH) shares are down about 8% in after-hours trading on the news (source: @StockMKTNewz).