Bloomberg (see access details).
Screen for the following by typing the code and pressing <GO>:
- Equities: EQS
- Bonds: SRCH
- Loans: LSRC
- Convertible Bonds: CVMN
- Municipals: SRC
- Preferreds: PSCH
- Funds: FSRC
- Options: OSCN
- Company Descriptions: DSRC
For a menu of ready-made screens (e.g. Top 500 Global Companies by Market Cap): TEQS