FINRA Suspends Securities Broker Serge Parakhnevich, And Investors Dispute His Sales Practices FINRA BrokerCheck shows that FINRA sanctioned securities broker Serge Parakhnevich (“Serge Parker”) (CRD#: 5493064, New York, New York) for trading without authorization. Moreover, Parakhnevich is facing investor disputes which allege excessive and unsuitable trading. Let’s take a look at these disputes, including what […]