| Abbreviation | Definition |
|---|---|
| XLA | Xcelera.Com, Inc. |
| XLB | Materials Select Sector SPDR |
| XLE | Energy Select Sector SPDR |
| XLF | Financial Select Sector SPDR |
| XLG | Price Legacy Corporation (formerly Excel Legacy Corporation) |
| XLI | Industrial Select Sector SPDR |
| XLK | Technology Select Sector SPDR |
| XLP | Consumer Staples Select Sector SPDR |
| XLU | Utilities Select Sector SPDR |
| XLV | Health Care Select Sect SPDR |
| XLY | Consumer Discretionary SPDR |
| XNG | Natural Gas |
| XOI | AMEX Oil Index |
| YCS | Lehman Brothers Holdings, Inc. |
| YFM | Big City Radio, Inc. |
| YLF | International Airline Support Group |
| ZCC | Commercial Consolidators |
| ZCO | The Ziegler Companies, Inc. |
| ZSB | Salomon Smith Barney Holdings I |