TED Spread
The TED spread is the difference between the interest rates on interbank loans and short-term U.S. government debt (T-bills).The TED spread fluctuates over time, but historically has often remained within the range of 10 and 50 bps (0.1% and 0.5%), until 2007. A rising TED spread is an indication of an increase in counter party lending risk. (Source: Wikipedia)