How it started
IHS
Information Handling Services (IHS) was founded in 1959, in Denver, Colorado, as Information Handling Services to provide information for aerospace engineers through microfilm databases.
IHS subsequently grew to incorporate other companies in the information services sector such as Cambridge Energy Research Associates, Global Insight, Jane's Information Group, Prime Publications Limited, and John S. Herold, Inc.
In 2008, IHS acquired Fairplay, a firm that assigns IMO identification numbers for ships, companies and registered owners.
In 2016, Englewood, Colorado-based IHS and London-based Markit merged. Jerre Stead was chief executive of the pre-merger IHS Inc. from 2006 to 2013 and from 2015 until the merger with Markit.
Markit
From Wikipedia’s article on IHS Markit, shared under CC BY-SA 4.0.3