Shutterstock/TupungatoMillennials and Gen Z are increasingly shopping at discount stores like TJ Maxx, Burlington, and Ross.Those shares could see as much as 18% upside if younger consumers keep looking for value, BofA says.Younger shoppers have become increasingly price-conscious amid high inflation.Gen Z wants more bang for their buck, and their love of a good deal could drive shares of some discount retailers up nearly 20%, Bank of America says.