| SNRG | | Refuse Systems | 1652539 |
| SNROY | | - | 1584273 |
| SNSE | | Pharmaceutical Preparations | 1829802 |
| SNT | | Communications Equipment, NEC | 1993727 |
| SNTG | | Finance Services | 1810467 |
| SNTI | | Biological Products, (No Diagnostic Substances) | 1854270 |
| SNTL | | Services-Personal Services | 889353 |
| SNTW | | Refuse Systems | 1619096 |
| SNV | | National Commercial Banks | 18349 |
| SNWV | | Surgical & Medical Instruments & Apparatus | 1417663 |
| SNX | | Wholesale-Computers & Peripheral Equipment & Software | 1177394 |
| SNY | | Pharmaceutical Preparations | 1121404 |
| SNYR | | Medicinal Chemicals & Botanical Products | 1562733 |
| SO | | Electric Services | 92122 |
| SOAR | | Air Transportation, Nonscheduled | 1853070 |
| SOBO | | Pipe Lines (No Natural Gas) | 2019061 |
| SOBR | | Periodicals: Publishing or Publishing & Printing | 1425627 |
| SOC | | Crude Petroleum & Natural Gas | 1831481 |
| SOCA | | Blank Checks | 2065948 |
| SOCGP | | Natural Gas Transmission | 92108 |
| SODI | | Semiconductors & Related Devices | 91668 |
| SOEZ | | Commodity Contracts Brokers & Dealers | 2057388 |
| SOFI | | Finance Services | 1818874 |
| SOGP | | Services-Computer Programming, Data Processing, Etc. | 1783407 |
| SOHGY | | - | 1536787 |
| SOHO | | Real Estate Investment Trusts | 1301236 |
| SOHU | | Services-Computer Processing & Data Preparation | 1734107 |
| SOL | | Electric & Other Services Combined | 1417892 |
| SOLC | | Commodity Contracts Brokers & Dealers | 2041869 |
| SOLS | | Chemicals & Allied Products | 2064953 |
| SOLV | | Surgical & Medical Instruments & Apparatus | 1964738 |
| SON | | Paperboard Containers & Boxes | 91767 |
| SONDQ | | Hotels, Rooming Houses, Camps & Other Lodging Places | 1819395 |
| SONG | | Services-Amusement & Recreation Services | 1671132 |
| SONM | | Telephone & Telegraph Apparatus | 1178697 |
| SONN | | Pharmaceutical Preparations | 1106838 |
| SONO | | Household Audio & Video Equipment | 1314727 |
| SONX | | Dental Equipment & Supplies | 1407973 |
| SONY | | Household Audio & Video Equipment | 313838 |
| SOPA | | Services-Business Services, NEC | 1817511 |
| SOPH | | Services-Computer Processing & Data Preparation | 1840706 |
| SOR | | - | 91847 |
| SORA | | Wholesale-Jewelry, Watches, Precious Stones & Metals | 2033515 |
| SOS | | Security & Commodity Brokers, Dealers, Exchanges & Services | 1346610 |
| SOTK | | Special Industry Machinery, NEC | 806172 |
| SOUL | | Blank Checks | 2025608 |
| SOUN | | Services-Prepackaged Software | 1840856 |
| SOWG | | Food and Kindred Products | 1490161 |
| SPAI | | Orthopedic, Prosthetic & Surgical Appliances & Supplies | 2011208 |
| SPAUF | | - | 1337090 |
