Tague Securities Corp. is a Philadelphia-based options specialist and market maker firm founded by Barry Tague. Van der Moolen N.V., Amsterdam's leading market maker and interdealer broker, acquired an 80% interest in Tague Securities' business in January of 1999. The remaining 20% was held beneficially by key personnel. 
Tague Securities was founded in the mid-1970's as a closely held, proprietary trading firm. The company became one of the largest specialist firms trading equity and currency options on the Philadelphia Stock Exchange ("PHLX") (which later merged with the AMEX).