| ROP | Roper Technologies |
| ROSS | BPGC Acquisition |
| ROST | Ross Stores |
| ROYL | Royale Energy |
| RPAY | Repay Holdings |
| RPC | Ridgepost Capital |
| RPD | Rapid7 |
| RPDL | Rapid Line |
| RPGL | Republic Power Group |
| RPGRF | REA Group |
| RPID | Rapid Micro Biosystems |
| RPM | RPM International |
| RPMT | Rego Payment Architectures |
| RPRX | Royalty Pharma |
| RPT | Rithm Property Trust Pref C |
| RQI | Cohen & Steers Quality Income Realty Fund |
| RR | Richtech Robotics |
| RRBI | Red River Bancshares |
| RRC | Range Resources |
| RREV | RRE Ventures Acquisition Units · Warrants |
| RRGB | Red Robin Gourmet Burgers |
| RRR | Red Rock Resorts |
| RRX | Regal Rexnord |
| RS | Reliance |
| RSCF | Reflect Scientific |
| RSF | RiverNorth Capital & Income Fund |
| RSG | Republic Services |
| RSGLF | Rocky Shore Gold |
| RSHGY | Resona Holdings RSNHF |
| RSHL | Rise Smart Group Holdings |
| RSI | Rush Street Interactive |
| RSKD | Riskified |
| RSKIA | George Risk Industries |
| RSMXF | Regency Silver |
| RSRBF | Robex Resources |
| RSRV | Reserve Petroleum |
| RSSS | Research Solutions |
| RSVR | Reservoir Media |
| RSVRW | Reservoir Media |
| RTAC | Renatus Tactical Acquisition Corp I Units · Warrants |
| RTB | RTB Digital |
| RTCJF | Baijiayun Group |
| RTEZ | Rest Ez |
| RTGN | RetinalGenix Technologies |
| RTNTF | Rio Tinto |
| RTO | Rentokil Initial RKLIF |
| RTON | Right On Brands |
| RTSN | Retension Pharmaceuticals |
| RTX | RTX |
| RUBI | Rubico |
| RUIH | RUI Holdings |
| RUM | RUM Group Warrants |
| RUN | Sunrun |
| RUPRF | Rupert Resources |
| RUSHA | Rush Enterprises RUSHB |
| RVI | Robinhood Ventures Fund I |
| RVII | Robinhood Ventures Fund II |
| RVLGF | Revival Gold |
| RVLV | Revolve Group |
| RVMD | Revolution Medicines Warrants |
| RVP | Retractable Technologies |
| RVPH | Reviva Pharmaceuticals Holdings |
| RVRC | Revium Rx. |
| RVRF | River Financial |
| RVSB | Riverview Bancorp |
| RVSN | Rail Vision Warrants |
| RVT | Royce Small-cap Trust |
| RVTY | Revvity |
| RWAX | Tap Real Estate Technologies |
| RWAY | Runway Growth Finance RWAYI · RWAYL · RWAYM |
| RWDMU | Redwood Mortgage Investors IX |
| RWT | Redwood Trust Pref A · RWTN · RWTO · RWTP · RWTQ · RWTS |
| RXO | RXO |
| RXRX | Recursion Pharmaceuticals |
| RXST | RxSight |
| RXT | Rackspace Technology |
| RY | Royal Bank Of Canada RYLBF |
| RYAAY | Ryanair Holdings RYAOF |
| RYAM | Rayonier Advanced Materials |
| RYAN | RYAN Specialty Holdings |
| RYDE | Ryde Group |
| RYES | Rise Gold |
| RYET | Ruanyun Edai Technology |
| RYKKF | Ryohin Keikaku |
| RYM | Rythm |
| RYN | Rayonier |
| RYOJ | rYojbaba |
| RYOOF | Rio Silver |
| RYTM | Rhythm Pharmaceuticals |
| RYZ | Ryerson Holding |
| RZAI | Roze Ai |
| RZLT | Rezolute |
| RZLV | Rezolve Ai Warrants |
| RZRA | Rezera |
