| Abbreviation | Definition |
|---|---|
| GSCC | Government Security Clearing Corporation |
| GSCI | Goldman Sachs Commodity Index |
| GSE | Ghana Stock Exchange |
| GSE | Guayaquil Stock Exchange |
| GSE | hana Stock Exchange |
| GSE | uayaquil Stock Exchange |
| GSOP | General Stock Ownership Plan |
| GSOP | Global Share Option Plan |
| GSTPA | Global Straight Through Processing Association |
| GTC | Good unTil Cancelled |
| GTS | Global Trading System |
| GTX | Good unTill Executed |
| GUFE | Guangdong United Futures Exchange |
| GUI | Graphical User Interface |
| GWIM | Global Wealth and Investment Management |
| GWPI | Gross Written Premium Income |
| HEAT | Hybrid Execution And Trading |
| HELOC | Home Equity Line Of Credit |
| HETI | Helsinki Stock Exchange Automated Trading and Information Systems |
| HEX | Helsinki EXchange |