精信环球集团（Grey Global Group）
精信环球主要股东、董事长兼CEO Edward Meyer拥有约为20% 的股权，但却掌控了超过50%的投票权。
Founded in 1917 (1917) by Larry Valenstein and Arthur Fatt, Grey Global Group began as a direct marketing company named Grey Studios, reflecting the color of the wall of its original quarters, changing to Grey Advertising in 1925.
In 1956 (1956), Grey acquired its first major client, Procter & Gamble. Through the 1960s and 1970s, Grey continued to acquire such major accounts, and grew into related communication fields. In 1970 (1970), Edward H. Meyer became CEO and would remain in that position for 36 years before selling the company and joining his son, Anthony E. Meyer, in management of private family wealth.
In 1988 (1988), the off-shore operation, London-based Grey Communications Group, recruited Barry Chapman as Group IS Director. In 1989 (1989) Chapman developed the New Media Experiment. Chapman explored the use of the internet as an alternative to traditional advertising media putting Grey at the forefront of the internet revolution.
In 2000 (2000), Grey Advertising became Grey Global Group. On March 7, 2005 (2005-03-07), WPP Group beat out Havas in a race to acquire Grey Global, the seventh-largest advertising agency at the time, for approximately 1.3 billion USD.
In late 2005, James R. Heekin III became CEO of Grey Worldwide, Grey Global Group's traditional advertising agency. On January 1, 2007 (2007-01-01), he became Chairman and CEO of Grey Group, the renamed agency holding company. He reports to Martin Sorrell, CEO of WPP Group.