- Abu Dhabi Investment Authority
- Acadia
- Accenture
- Access Fintech
- American Century Investments
- ASC X9 Financial Industry Standards
- BlackRock, Inc.
- Bloomberg L.P.
- BNP Paribas
- BNY Mellon
- Brown Brothers Harriman
- Capital Group Companies, Inc.
- Cassini
- Citibank, N.A.
- CME Group Inc.
- CUSIP Global Services
- Davies Advisors LP
- DIACSUS LLC
- Digital Asset
- Dfns
- DTCC
- FIA Technology Services LLC
- Fidelity Corporate Actions Solutions
- Fidelity Information Services, LLC (FIS)
- Fidelity Institutional/National Financial Services
- Fidelity Investments
- FIX Protocol Limited
- Franklin Templeton Investments
- Globetax
- Goldman Sachs Asset Management
- Grantham, Mayo, Van Otterloo & Co. LLC
- J.P. Morgan Chase & Co.
- J.P. Morgan Securities Inc.
- Kingland
- London Stock Exchange Group (LSEG)
- Loomis, Sayles & Company, L.P.
- Manulife
- Meradia
- MFS Investment Management
- Morgan Stanley
- NISA Investment Advisors, LLC
- Northern Trust Company
- Oaktree Capital Management, L.P.
- OSTTRA
- PayRecAI
- PIMCO
- Platonic
- Principal Financial Group
- RBC Investor Services
- Renaissance Technologies LLC
- S&P Global Inc.
- Saphyre Inc
- Seclore, Inc.
- SSImple
- State Street Corporation
- Swift
- TMX – Canadian Depository for Securities
- Tokenized Commodity Council (TCC)
- Two Sigma Investments LP
- U.S. Bank, N.A.
- Vanguard
- Wellington Management Company, LLP.