Stock Taper 
SIMPLEX TRADING, LLC
Latest 13F filing data - Q2 2026
Holdings
(Top positions)| STOCK | TICKER | SHARES HELD▲ ▼ | VALUE▲ ▼ |
|---|---|---|---|
 Apogee Therapeutics, Inc. | APGE | 2.37K | $314.3K |
 MarketAxess Holdings Inc. | MKTX | 2.34K | $265.11K |
 AAON, Inc. | AAON | 2.33K | $296.22K |
 Madison Air Solutions Corporation | MAIR | 2.33K | $91.03K |
 GeneDx Holdings Corp. | WGS | 2.32K | $159.41K |
 Pentair plc | PNR | 2.31K | $177.08K |
 Chord Energy Corporation | CHRD | 2.29K | $262.2K |
 Post Holdings, Inc. | POST | 2.29K | $201.67K |
 YETI Holdings, Inc. | YETI | 2.28K | $113.05K |
 ING Groep N.V. | ING | 2.25K | $70.67K |
 Flywire Corp | FLYW | 2.22K | $39.08K |
 Palvella Therapeutics, Inc. | PVLA | 2.22K | $338.95K |
 M&T Bank Corporation | MTB | 2.21K | $526.72K |
 Thermo Fisher Scientific Inc. | TMO | 2.21K | $1.11M |
 WillScot Holdings Corporation | WSC | 2.2K | $63.52K |
 Celularity Inc. | CELU | 2.19K | $1.31K |
 WEC Energy Group, Inc. | WEC | 2.17K | $252.81K |
 Domino's Pizza, Inc. | DPZ | 2.15K | $637.37K |
 IPG Photonics Corporation | IPGP | 2.13K | $250.48K |
 Steven Madden, Ltd. | SHOO | 2.13K | $89.55K |