| Subject | English | Thesaurus |
| invest., abbr. | Bankers' Automated Clearing Services | BACS |
| busin., abbr. | Clearing Corporation for Options and Services | CCOS |
| abbr., mil., BrE | Combined Services Information Clearing House | CSICH |
| busin., abbr. | European Options Clearing Corporation | EOCC |
| busin., abbr. | International Options Clearing Corporation | IOCC |
| invest., abbr. | London Options Clearing House | LOCH |
| ecol., abbr. | Medium Altitude Clear Air Turbulence Program | MEDCAT |
| invest., abbr. | Options Clearing Corporation | OCC |
| busin., abbr. | Securities Clearing Automated Network Services | SCANS |
| abbr., st.exch. | The APX-ENDEX was an energy exchange operating the spot and derivatives markets for electricity and natural gas in the Netherlands, the United Kingdom, and Belgium. It provided exchange trading, central clearing and settlement, and data distribution services as well as benchmark data and industry indices. | APX-Endex (olsoz) |
