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O'Connor & Associates was a Chicago-based options trading firm, with a particular emphasis on financial derivatives. The firm was founded in 1977 by Edmund J O'Connor and his brother William O`Connor. In 1992, O'Connor & Associates was acquired by Swiss Bank Corporation. [1]
[141] [142] In 2013, Yelp sued a lawyer it alleged was part of a group of law firms that exchanged Yelp reviews, saying that many of the firm's reviews originated from their own office. The lawyer said Yelp was trying to get revenge for his legal disputes and activism against Yelp. [ 134 ]
Global Trading Systems, which uses the trade name GTS, is an American proprietary trading and market making firm headquartered in New York. The firm accounts for 3 to 5 percent of the daily turnover of US equities and has handled over 250 IPO listings since 2013. GTS has additional offices in Chicago, Florida, London, Paris, Warsaw, and Israel.
2006- TMG created Aardvark Trading LLC to serve as TMG's algorithmic trading subsidiary. 2007- MF Global acquired BrokerOne, a leading Australian Futures Broker. Prior to this acquisition, the controlling shareholder was TransMarket Group. TransMarket Group began shifting its entire business to its "arcade" proprietary trading business. [10]
Radix Trading was co-founded by Benjamin Blander and Michael Rauchman. Blander was previously head of the high-frequency trading group of Citadel LLC while Rauchman was the chief technology officer of GETCO. [1] [2] [3] In August 2017, Radix Trading opened an office in Amsterdam to expand its operations into Europe.
Chicago Options Associates (COA) is a finance company in Chicago, Illinois which specializes in trading options and futures contracts. It was founded in 1987 by Oliver R. W. Pergams and Michael E. Davis .
The company was a leader in the application of computer technology to listed derivatives trading. A proprietary and large scale reliable distributed system architecture was developed by company programmers, providing automatic real-time pricing, risk management, market making and interconnection with automated options, futures and stock exchanges as they became available.