...thought I'd visit the website to check my swiss-cheese memory.

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Penson offers an electronic execution service to meet the growing needs of the North American and European financial firms. Through our worldwide exchange memberships, we can provide Direct Market Access of equities to the following exchanges: NYSE, AMEX, CBOE, PACIFIC, ISE, NASDAQ, INET, ARCA, BRUT, MX, TSX, and TSXV.