| SILC | Silicom Ltd - Ordinary Shares | | |
| SILO | Silo Pharma, Inc. - Common Stock | | |
| SIMA | SIM Acquisition Corp. I - Class A Ordinary Shares | | |
| SIMAU | SIM Acquisition Corp. I - Unit | | |
| SIMAW | SIM Acquisition Corp. I - Warrant | | |
| SIMO | Silicon Motion Technology Corporation - American Depositary Shares, each representing four ordinary shares | | |
| SINT | SiNtx Technologies, Inc. - Common Stock | | |
| SION | Sionna Therapeutics, Inc. - Common Stock | | |
| SIRI | SiriusXM Holdings Inc. - Common Stock | | |
| SITM | SiTime Corporation - Common Stock | | |
| SJ | Scienjoy Holding Corporation - Class A Ordinary Shares | | |
| SKHY | SK hynix Inc. - American Depositary Shares | | |
| SKIN | SkinHealth Systems Inc. - Class A Common Stock | D | |
| SKWD | Skyward Specialty Insurance Group, Inc. - Common Stock | | |
| SKYA | SkyAI, Inc. - Common Stock | | |
| SKYAW | SkyAI, Inc. - Warrant | | |
| SKYE | Skye Bioscience, Inc. - Common Stock | D | |
| SKYQ | Sky Quarry Inc. - Common Stock | | |
| SKYW | SkyWest, Inc. - Common Stock | | |
| SKYX | SKYX Platforms Corp. - Common Stock | D | |
| SLAB | Silicon Laboratories, Inc. - Common Stock | | |
| SLBT | SL Science Holding Limited - Ordinary Shares | | |
| SLDB | Solid Biosciences Inc. - Common Stock | | |
| SLDE | Slide Insurance Holdings, Inc. - Common Stock | | |
| SLDP | Solid Power, Inc. - Class A Common Stock | | |
| SLDPW | Solid Power, Inc. - Warrant | | |
| SLE | Super League Enterprise, Inc. - Common Stock | | |
| SLGB | Smart Logistics Global Limited - Class A Ordinary Shares | D | |
| SLGL | Sol-Gel Technologies Ltd. - Ordinary Shares | | |
| SLM | SLM Corporation - Common Stock | | |
| SLMBP | SLM Corporation - Floating Rate Non-Cumulative Preferred Stock, Series B | | |
| SLMT | Brera Holdings PLC - Class B Ordinary Shares | | |
| SLN | Silence Therapeutics Plc - American Depository Share | | |
| SLNG | Stabilis Solutions, Inc. - Common Stock | | |
| SLNH | Soluna Holdings, Inc. - Common Stock | | |
| SLNHP | Soluna Holdings, Inc. - 9.0% Series A Cumulative Perpetual Preferred Stock | | |
| SLRC | SLR Investment Corp. - Closed End Fund | | |
| SLS | SELLAS Life Sciences Group, Inc. - Common Stock | | |
| SLSN | Solesence, Inc. - Common stock | D | |
| SLXN | Silexion Therapeutics Corp - Ordinary Shares | D | |
| SLXNW | Silexion Therapeutics Corp - Warrant | D | |
| SMBC | Southern Missouri Bancorp, Inc. - Common Stock | | |
| SMCI | Super Micro Computer, Inc. - Common Stock | | SP500 |
| SMCIP | Super Micro Computer, Inc. - Depositary Shares Each Representing a 1/20th Interest in a Share of 7% Series A Mandatory Convertible Preferred Stock | | |
| SMID | Smith-Midland Corporation - Common Stock | | |
| SMMT | Summit Therapeutics Inc. - Common Stock | | |
| SMPL | The Simply Good Foods Company - Common Stock | | |
| SMSI | Smith Micro Software, Inc. - Common Stock | | |
| SMTC | Semtech Corporation - Common Stock | | |
| SMTI | Sanara MedTech Inc. - Common Stock | | |