EFX Prime Services, a division of First New York Securities, has hired two prime brokerage executives to help lead EFX Prime’s sales efforts.

Both will be based at EFX Prime’s New York Headquarters at 90 Park Avenue.

Jonathan Shapiro joins EFX Prime from Goldman Sachs where he was a senior relationship manager. With a strong operational background based on ten years of prime services experience, Shapiro will assist EFX Prime clients address operational and infrastructure challenges.

Gary Mednick, a 29 year brokerage veteran, joins EFX Prime from Grace Financial where he built out a client base of hedge fund managers and active traders. Mednick was also the founder of On-Site Trading, a trading and agency brokerage and one of the early adopters of DMA technology.

“Building on the 25 years of trading success of First New York - EFX Prime Services offers an unparalleled operational service offering and trading expertise and acts as a true partner to our clients success,” says Brian Stutman, managing director. “We are pleased to add Jonathan and Gary to EFX Prime Services. Their tremendous experience and specific areas of expertise will help our clients leverage our trading expertise, operational excellence and unique capital introduction effort.”

EFX Prime Services offers prime brokerage services, trading solutions and capital introduction to single and multi-primed funds.