AEX
| Andersons | 2 |
APPX
| Appalachian Railcar Services | 1 |
BBFX
| Babcock & Brown Rail Management LLC | 3 |
BM
| Boston & Maine | 12 |
BN
| Burlington Northern | 2 |
BNBX
| Greenbrier Management Services, LLC | 2 |
BPRR
| Buffalo and Pittsburgh | 3 |
CNW
| Chicago & Northwestern | 1 |
COGX
| Rail Connection, Inc. | 3 |
CR
| Conrail | 1 |
CS
| Colorado & Southern | 1 |
CSX
| CSX Railroad | 20 |
CTRN
| Union Pacific Railroad Company | 2 |
DRGW
| Denver & Rio Grande Western | 1 |
EBT
| East Broad Top | 4 |
EL
| Erie Lackawanna | 2 |
ETRX
| Arkansas Power and Light Company | 1 |
FEPX
| FirstEnergy Generation Corp | 1 |
HLMX
| Helm Financial Corporation | 1 |
JTSX
| Joseph Transportation Incorporated | 3 |
LCRX
| Lower Colorado River Authority (Texas) | 1 |
LV
| Lehigh Valley | 1 |
LWAX
| Laidlaw Environmental Services | 2 |
MARX
| MidAmerican Energy Corporation | 1 |
MEC
| Maine Central | 2 |
MMAX
| Martin-Marietta Aggregates | 1 |
MP
| Missouri Pacific | 1 |
MPSX
| Missouri Public Service | 1 |
MRDX
| MidAmerican Energy Company | 5 |
MTIX
| MIRANT ENERGY TRADING LLC | 5 |
MWNX
| MWNX | 1 |
NDYX
| First Union Rail | 1 |
NS
| Norfolk Southern | 3 |
NSPX
| Xcel Energy | 3 |
NW
| Norfolk & Western | 2 |
NYC
| New York Central | 2 |
OFOX
| RESIDCO | 1 |
PEPX
| Potomac Electric Power Company | 3 |
PPLX
| Pennsylvania Power and Light Company | 2 |
PSR
| Pittsburg and Shawmut Railroad Incorporated | 1 |
PTM
| Portland Terminal | 1 |
RBMN
| Reading Blue Mountain & Northern | 3 |
RRLX
| Rail Logistics, LC | 1 |
SCWX
| South Carolina Public Service Authority | 4 |
SLR
| St Lawrence & Atlantic | 1 |
SOU
| Southern | 2 |
SOXX
| SMBC RAIL SERVICES LLC | 1 |
TXUX
| TXU Electric | 4 |
VAPX
| Virginia Power | 1 |
WE
| Wheeling & Lake Erie | 2 |