| Member entity | Company |
| 4CBs | Banca d'Italia |
| 4CBs | Deutsche Bundesbank |
| ABI Lab Italy | Abi LAB / Pine3 consulting Italy |
| ACTUS | ACTUS Financial Research Foundation |
| ACTUS | Ariadne Business Analytics AG |
| Australia | ASX |
| Austria | Unifits |
| Bank of Japan for ISO/TC68 | CITRON Systems |
| Belgium | BNY Mellon |
| Belgium | NBB |
| Brazil | BVMF |
| Brazil | B3 |
| Brazil | IPMF Global |
| Brazil | Destrava |
| Brazil | ANBIMA |
| Clearstream | Clearstream |
| Clearstream | Clearstream Banking |
| Denmark | Euronext Securities |
| Depository Trust & Clearing Corporation (DTCC) | DTCC |
| European Central Bank (ECB) | ECB |
| Euroclear | Euroclear |
| FCA | Financial Conduct Authority (FCA) |
| FIS | Fidelity Information Services |
| FIX | Fix Trading |
| FIX Protocol | Brook Path Partners, Inc. |
| France | Société Générale Securities Services - SGSS |
| France | BNP Paribas Securities Services |
| Germany | Deutsche Bundesbank |
| Germany | State Street |
| Germany | Clearstream |
| Germany | BVI |
| Ireland | CITIBANK EUROPE |
| Italy | Société Générale |
| Japan | Japan Promontory Financial Group |
| Japan | Japan Securities Depositary Center, Inc. |
| Japan | Financial Services Agency, Government of Japan (FSA) |
| KOR Financial | KOR Financial |
| NBB | National Bank of Belgium |
| Netherlands | ABN AMRO Clearing |
| Norway | DnB Carnegie |
| Singapore | Zensung |
| Singapore | SGX |
| South Africa (SABS) | ASISA |
| South Africa (SABS) | Johannesburg Stock Exchange |
| South Africa (SABS) | A2X |
| South Africa (SABS) | ABSA |
| Spain | Deutsche Bank |
| Spain | All Funds Bank |
| Sweden | SEB |
| Swift | Swift |
| Swiss Association for Swift & Financial Standards | UBS Business Solutions |
| Switzerland | SIX Group |
| Switzerland | Credit Suisse |
| UK/France | BGC Group |
| United Kingdom | Bloomberg |
| United Kingdom | LSEG |
| United Kingdom | BT Internet |
| United Kingdom | Actuare |
| United Kingdom | Deutsche Bank |
| United Kingdom | London Market Systems Ltd |
| United Kingdom | Calastone |
| United Kingdom | The ICE |
| United Kingdom | TConsult Limited |
| United Kingdom | Origo |
| United Kingdom | X_X.NET LTD |
| United Kingdom | Equisoft |
| United Kingdom | The LME |
| United States | Bank of New York Mellon |
| United States | State Street |
| United States | Bloomberg |
| United States | ASX X9 |