If you're here looking up Calamos customer care, you probably already know who they are. But it helps to get an idea of how big they are and what their support operation looks like if you are a customer. Calamos also goes by or is associated with the names Calamos Investments LLC, Calamos Investments. They are considered to be part of the following sectors and industries: Industrials, Commercial & Professional Services, Professional Services, Consulting. Calamos is associated with terms like private, consulting & professional services, marketplace, enterprise, b2b, financial services by their customers and industry analysts. They are similar to companies like The Gap Partnership, ComPsych, TradeStation, NPower, Bank of Texas, Stearns Bank, Five Brothers. They employ 300 people according to customers in the know.