Previously, Sterling Investment Services tracked 34 difference sector indices. These activities have been discontinued as part of the reorganization into Sterling Holdings and Investments, LLC.
| S&P Banking ‘BIX’ | Philly Banking ‘BKX’ |
| Amex Biotech. ‘BTK’ | S&P Chemical ‘CEX’ |
| M.S. Consumer ‘CMR’ | Ms. Commodities ‘CRX’ |
| M.S. Cyclicals ‘CYC’ | Amex Disk Drive Man. ‘DDX’ |
| Amex Pharm. ‘DRG’ | Dow Jones Indust. ‘INDU’ |
| CBOE. 5-Yr Treasury ‘FVX’ | S&P Healthcare ‘HCX’ |
| Amex Interactive ‘IIX’ | Internet ‘INX’ |
| Insurance ‘IUX’ | M.S. High Tech. ‘MSH’ |
| NASDAQ 100 ‘NDX’ | Amex Networking ‘NWX’ |
| S&P 100 ‘OEX’ | S&P Retailers ‘RLX’ |
| M.S. Healthcare Prod. ‘RXP’ | Philly Semicond. ‘SOX’ |
| S&P 500 ‘SPX’ | CBOE 10-Yr. Treasury ‘TNX’ |
| CBOE Technology ‘TXX’ | CBOE 30-Yr Treasury ‘TYX’ |
| Philly Utility ‘UTY’ | Amex Airline ‘XAL’ |
| Philly Gold/Silver ‘XAU’ | Amex Broker/Dealer ‘XBD’ |
| Amex Computer Tech. ‘XCI’ | Amex Natural Gas ‘XNG’ |
| Amex Oil ‘XOI’ | Amex. N. Amer Telecom ‘XTC’ |
