Market Makers, O List: Free Level 2 Stock Quotes | N | Y | N | N OIEN | P | Oien Securities, Inc. | | | N | N | N | N OLDM | P | OLD MISSION CAPITAL, LLC | | | Y | N | Y | Y OLMM | N | OLMSTED & MULHALL, INC. | | | N | Y | N | oops OLMM not OLMN N OLMP | M | Olympus Securities, LLC | MONTVILLE, NJ | 973-575-1620 | Y | Y | N | N OLST | P | Olstein & Associates, L.P. | PURCHASE, NY | 914-269-6100 | N | Y | N | N OMGP | P | Omni Brokerage, Inc. | | | N | N | N | N OMPA | P | Olympia Asset Management, Ltd. | | | N | Y | N | N OMSL | P | OPTIONSHOUSE | | | N | Y | N | N ONEL | O | O'NEIL SECURITIES, INCORPORATED | LOS ANGELES, CA | 310-574-5613 | Y | Y | N | N OPCO | M | Oppenheimer & Co. Inc. | NEW YORK, NY | 212-422-7813 | Y | Y | N | Y OPCO | M | Oppenheimer & Co. Inc. | CONVERTIBLE BONDS | 212-668-5764 | Y | Y | N | Y OPCO | M | Oppenheimer & Co. Inc. | | 800-682-5381 | Y | Y | N | Y OPCO | M | Oppenheimer & Co. Inc. | NASDAQ/OTCBB TRADING | 212-422-7813 | Y | Y | N | Y OPCO | M | Oppenheimer & Co. Inc. | LISTED DESK | 212-668-803