Indicating Interests Using FIX


Indications of Interests (IoIs)—messages that represent tentative interest rather than a firm quote or order to buy or sell—have long been a part of the Financial Information Exchange (FIX) protocol. But as the industry evolves to demand more immediacy and certainty of execution, so too does the need to update message parameters for IoIs. Natasha Bonner-Fomes, head of European electronic client services for Lehman Brothers, spoke to Inside Market Data about the market forces that are driving