| NASDAQ | IART | 126 |
| NASDAQ | IAS | 51 |
| NASDAQ | IBAC | 2 |
| NASDAQ | IBCP | 85 |
| NASDAQ | IBEX | 61 |
| NYSE MKT | IBIO | 2 |
| NASDAQ | IBKR | 947 |
| NYSE | IBM | 109 |
| NYSE | IBN | 3 |
| NASDAQ | IBOC | 38 |
| NYSE | IBP | 120 |
| NASDAQ | IBRX | 12 |
| NYSE | IBTA | 18 |
| NASDAQ | IBTX | 171 |
| NASDAQ | ICAD | 45 |
| NASDAQ | ICCC | 22 |
| NASDAQ | ICCH | 20 |
| OTCQB | ICCT | 1 |
| NYSE | ICD | 89 |
| NYSE | ICE | 351 |
| NASDAQ | ICFI | 123 |
| NASDAQ | ICHR | 85 |
| NYSE | ICL | 2 |
| NASDAQ | ICLR | 1 |
| NASDAQ | ICMB | 85 |
| NASDAQ | ICPT | 224 |
| NASDAQ | ICU | 12 |
| NASDAQ | ICUI | 250 |
| NASDAQ | ICVX | 32 |
| NYSE | IDA | 66 |
| NASDAQ | IDCC | 108 |
| NASDAQ | IDEX | 4 |
| NASDAQ | IDN | 66 |
| NASDAQ | IDRA | 56 |
| NYSE | IDT | 88 |
| NYSE MKT | IDW | 1 |
| NASDAQ | IDXX | 207 |
| NASDAQ | IDYA | 50 |
| NASDAQ | IEA | 21 |
| NASDAQ | IEP | 8 |
| NASDAQ | IESC | 115 |
| NYSE | IEX | 126 |
| NYSE | IFF | 226 |
| NYSE | IFIN | 1 |
| NASDAQ | IFMK | 8 |
| NYSE | IFS | 11 |
| NYSE | IGI | 3 |
| NASDAQ | IGMS | 91 |
| NYSE | IGR | 2 |
| NYSE | IGT | 9 |
