The trio have teamed up to offer bond trading clients real time streaming of FX prices into their bond workflow through a new trading solution.
INTL FCStone previously worked with Integral to develop its mobile trading app for institutional clients.
FX prime brokerage venture between Jefferies and Integral has completed its first trades after launching the TrueFX platform in November.
The TrueFX clearing member network allows the buy-side to access liquidity from market makers without an intermediary.
TrueFX from Jefferies and Integral aims to reduce costs for the buy-side by combining trading, technology and credit services into a single product.
Gavin Bambury spent six years as CEO of ION Trading, before moving to eFX trading platform Integral as chief technology officer.
INTL FCStone has said that demand from institutional clients for mobile trading services has increased.
Integral currently has more than 200 financial institutions that use its technology services for FX businesses.