QuinStreet, Inc. (NasdaqGS:QNST) acquired Smartia Assessoria e Corretagem de Seguros S.A. on January 3, 2018. QuinStreet, Inc. (NasdaqGS:QNST) completed the acquisition of Smartia Assessoria e Corretagem de Seguros S.A. on January 3, 2018.