KEY TAKEAWAYSTJX Companies, the operator of discount retailers including TJ Maxx, posted higher-than-expected quarterly results Wednesday and raised its full-year earnings outlook.TJX said it is raising its full-year pretax profit margin outlook and expects a 3% gain in comparable store sales year-over-year.Strong European sales drove gains in its international business, TJX said. TJX Companies (TJX), the operator of discount retailers including TJ Maxx, posted higher-than-expected quarterly results on the ...