Underperform the Market
Underperform the Market means your stock portfolio performed worse than one of the major indices, such as the DJIA or S&P500.
Undervalued means the price of an investment is less than its value or what it's worth.
An upgrade is when an institution's credit rating goes up, which usually happens when the institution is doing better financially than it once was.
US Treasury Bond
A US Treasury Bond is a bond that is issued by the United States Government.
USD is an abbreviation for US Dollar.
UST is an abbreviation for US Treasury.