| XAIR | | Surgical & Medical Instruments & Apparatus | 1641631 |
| XBIO | | Pharmaceutical Preparations | 1534525 |
| XBIT | | Pharmaceutical Preparations | 1626878 |
| XBP | | Services-Business Services, NEC | 1839530 |
| XCBE | | Blank Checks | 2083493 |
| XCH | | Miscellaneous Electrical Machinery, Equipment & Supplies | 1979887 |
| XCRT | | Services-Health Services | 1138586 |
| XCUR | | Pharmaceutical Preparations | 1698530 |
| XEL | | Electric & Other Services Combined | 72903 |
| XELB | | Patent Owners & Lessors | 1083220 |
| XENE | | Pharmaceutical Preparations | 1582313 |
| XERI | | Aircraft | 1481504 |
| XERS | | Pharmaceutical Preparations | 1867096 |
| XFLH | | Blank Checks | 2088103 |
| XFLT | | - | 1703079 |
| XFOR | | Biological Products, (No Diagnostic Substances) | 1501697 |
| XGN | | Services-Medical Laboratories | 1274737 |
| XHG | | Insurance Agents, Brokers & Service | 1769256 |
| XHLD | | Services-Business Services, NEC | 2030954 |
| XHR | | Hotels & Motels | 1616000 |
| XIFR | | Electric Services | 1603145 |
| XIN | | General Bldg Contractors - Residential Bldgs | 1398453 |
| XITO | | Blank Checks | 1651932 |
| XLO | | Pharmaceutical Preparations | 1840233 |
| XMTR | | Services-Business Services, NEC | 1657573 |
| XNCR | | Pharmaceutical Preparations | 1326732 |
| XNDA | | Services-Business Services, NEC | 1624985 |
| XNET | | Services-Prepackaged Software | 1510593 |
| XOM | | Petroleum Refining | 34088 |
| XOMA | | Pharmaceutical Preparations | 791908 |
| XONI | | Services-Amusement & Recreation Services | 2040753 |
| XOS | | Motor Vehicle Parts & Accessories | 1819493 |
| XP | | Security Brokers, Dealers & Flotation Companies | 1787425 |
| XPD | | Wholesale-Groceries, General Line | 2060614 |
| XPEL | | Coating, Engraving & Allied Services | 1767258 |
| XPER | | Services-Prepackaged Software | 1788999 |
| XPEV | | Motor Vehicles & Passenger Car Bodies | 1810997 |
| XPL | | Gold and Silver Ores | 917225 |
| XPO | | Transportation Services | 1166003 |
| XPOF | | Services-Miscellaneous Amusement & Recreation | 1802156 |
| XPON | | Miscellaneous Electrical Machinery, Equipment & Supplies | 1894954 |
| XPRO | | Oil & Gas Field Services, NEC | 1575828 |
| XRAY | | Dental Equipment & Supplies | 818479 |
| XRP | | Commodity Contracts Brokers & Dealers | 2039525 |
| XRPN | | Blank Checks | 2044009 |
| XRPZ | | Commodity Contracts Brokers & Dealers | 2059438 |
| XRTX | | Pharmaceutical Preparations | 1729214 |
| XRX | | Computer Peripheral Equipment, NEC | 1770450 |
| XSIAX | | - | 1124959 |
| XTGRF | | Metal Mining | 1288770 |