| 1 | program trade |
| 2 | index arbitrage |
| 3 | non index arbitrage |
| 4 | competing market maker |
| 5 | acting as market maker or specialist in the security |
| 6 | acting as market maker or specialist in the underlying security |
| 7 | foreign entity |
| 8 | external market participant |
| 9 | external inter connected market linkage |
| A | riskless arbitrage |