Jeffrey Citron, Chairman and CEO of Vonage, is a technology pioneer and visionary who transformed the financial services industry. In 1995, Citron founded The Island ECN, a computerized trading system designed to eliminate the problems associated with order execution. Today, the newly merged company is one of the largest global financial exchanges, and is responsible for more than one in four NASDAQ trades.

Following on the success of The Island ECN, Citron founded and became the Chairman and CEO of Datek Online Holdings Corp. as Datek transitioned into the online brokerage industry. Under his leadership, Datek had grown to become the fourth largest online brokerage in the US, and was recently acquired by Ameritrade Holdings for $1.3 billion. Citron departed Datek in 1999 and, recognizing a similar opportunity, founded Vonage.