Fortis Clearing Americas

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Fortis Clearing Americas
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Founded 2001
Headquarters Chicago
Products Clearing services for derivatives, bonds, equities and commodities

Fortis Clearing Americas was a unit of France's BNP Paribas that later became part of ABN AMRO.

BNP Paribas acquired the investment operations of the Belgo-Dutch financial services group Fortis when Fortis was forced to sell 75% of its Begium and Luxembourg holdings due to a solvency crisis.[1] The business was originally formed with the 2006 merger of Fortis Clearing Chicago and Chicago-based O'Connor & Company.[2]


Fortis launched its US operation in 2001, tripling the scale of its clearing operation with the acquisition of O'Connor & Company in November 2005. The deal closed in September 2006.

O'Connor & Company was established in 1959 by Edmund and William O'Connor, who helped launch the Chicago Board Options Exchange. In 1972, the O'Connor brothers founded First Options of Chicago which grew to become the largest clearing firm for option market makers in the world. First Options was later acquired by Spear Leeds & Kellogg in 1977[3].

In July of 2010 Fortis Bank (Nederland) merged with ABN AMRO Bank, creating a combined entity called ABN AMRO Bank N.V. Before the merger, ABN AMRO Clearing Bank N.V. was named Fortis Bank Global Clearing N.V. As a consequence of the merger, branches and subsidiaries of Fortis Bank Global Clearing N.V. were renamed, replacing the Fortis name with ABN AMRO.[4]