| SYK | Stryker Corporation | 335.61 | Healthcare | Stocks | NYQ |
| SWK | Stanley Black & Decker, Inc. | 89.71 | Industrials | Stocks | NYQ |
| SIX | Six Flags Entertainment Corpora | 23.73 | Consumer Cyclical | Stocks | NYQ |
| SIL | Global X Silver Miners ETF | 31.95 | N/A | ETF | PCX |
| PIK | Kidpik Corp. | 4.19 | Consumer Cyclical | Stocks | NCM |
| SIG | Signet Jewelers Limited | 101.80 | Consumer Cyclical | Stocks | NYQ |
| SILK | Silk Road Medical, Inc. | 17.80 | Healthcare | Stocks | NMS |
| SID | Companhia Siderurgica Nacional | 2.77 | Basic Materials | Stocks | NYQ |
| SIKA.SW | SIKA N | 264.20 | Basic Materials | Stocks | EBS |
| SII | Sprott Inc. | 40.09 | Financial Services | Stocks | NYQ |
| STK | Columbia Seligman Premium Techn | 31.17 | Financial Services | Stocks | NYQ |
| CIK | CIK | 2.88 | Financial Services | Stocks | NYQ |
| SIM | Grupo Simec, S.A.B. de C.V. | 31.00 | Basic Materials | Stocks | ASE |
| 57U0.SG | Sikri Holding ASA | 0.59 | Technology | Stocks | STU |
| SIF | SIFCO Industries, Inc. | 3.18 | Industrials | Stocks | ASE |
| MIK | MIK | N/A | N/A | Stocks | NMS |
| 57U0.F | SIKRI GROUP ASA NK-,02 | 0.60 | Technology | Stocks | FRA |
| SIKA.BO | SIKA INTERPLANT SYSTEMS LTD. | 1,990.30 | Industrials | Stocks | BSE |
| SIR | SIR | N/A | N/A | Stocks | NMS |
| SXYAY | SIKA AG UNSP ADR EACH REP 0.10 | 28.88 | Basic Materials | Stocks | PNK |
| SKK | SKK | N/A | N/A | ETF | PCX |
| SI | SI | N/A | N/A | Stocks | NYQ |
| SIS | SIS | N/A | N/A | Index | NYS |
| SMK | SMK | N/A | N/A | Stocks | ASE |
| TIK | TIK | 3.60 | N/A | Stocks | ASE |