| NYSE | HWM | 13 |
| NYSE | HXL | 92 |
| NYSE | HY | 190 |
| NASDAQ | HYFM | 7 |
| NYSE | HYLN | 39 |
| NASDAQ | HYMC | 72 |
| NASDAQ | HYMCL | 17 |
| NASDAQ | HYPR | 21 |
| NASDAQ | HYRE | 20 |
| NASDAQ | HYZN | 25 |
| NYSE | HZN | 64 |
| NASDAQ | HZNP | 142 |
| NYSE | HZO | 162 |
| NYSE | HZON | 1 |
| NYSE | IAA | 7 |
| NASDAQ | IAC | 47 |
| NYSE | IAG | 2 |
| NASDAQ | IART | 126 |
| NASDAQ | IAS | 51 |
| NASDAQ | IBCP | 85 |
| NASDAQ | IBEX | 57 |
| NASDAQ | IBKR | 946 |
| NYSE | IBM | 106 |
| NASDAQ | IBOC | 38 |
| NYSE | IBP | 118 |
| NASDAQ | IBRX | 8 |
| NYSE | IBTA | 18 |
| NASDAQ | IBTX | 171 |
| NASDAQ | ICAD | 45 |
| NASDAQ | ICCC | 22 |
| NASDAQ | ICCH | 20 |
| OTCQB | ICCT | 1 |
| NYSE | ICD | 89 |
| NYSE | ICE | 344 |
| NASDAQ | ICFI | 122 |
| NASDAQ | ICHR | 79 |
| NYSE | ICL | 2 |
| NASDAQ | ICLR | 1 |
| NASDAQ | ICMB | 85 |
| NASDAQ | ICPT | 224 |
| NASDAQ | ICU | 12 |
| NASDAQ | ICUI | 250 |
| NASDAQ | ICVX | 32 |
| NYSE | IDA | 65 |
| NASDAQ | IDCC | 100 |
| NASDAQ | IDEX | 4 |
| NASDAQ | IDN | 63 |
| NASDAQ | IDRA | 56 |
| NYSE | IDT | 86 |
| NYSE MKT | IDW | 1 |
