| S&P | Standard & Poor's | - | Chatting Acronyms |
| SAI | Statement Of Additional Information | - | Chatting Acronyms |
| SCA | Supplementary Credit Approval | - | Chatting Acronyms |
| SCP | Single Capital Pot | - | Chatting Acronyms |
| SDA | Service Delivery Agreement | - | Chatting Acronyms |
| SEC | Securities Exchange Commission | - | Chatting Acronyms |
| SEP | Simplified Employee Pension | - | Chatting Acronyms |
| SEQUINS | Select Equity Indexed Notes | - | Chatting Acronyms |
| SIPC | Securities Investor Protection Corporation | - | Chatting Acronyms |
| SIV'S | Structured Investment Vehicles | - | Chatting Acronyms |
| SME | Small And Medium Enterprises | - | Chatting Acronyms |
| SRO | Self-Regulatory Organization | - | Chatting Acronyms |
| SSA | Standard Spending Assessment | - | Chatting Acronyms |
| SSC | Sector Skills Council | - | Chatting Acronyms |
| STC | Securities Training Corporation | - | Chatting Acronyms |
